int
main( int argc, char *argv[] )
{
int i;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
plfont( 2 );
// Make log plots using two different styles.
i = 0;
while ( x_labels[i] != NULL )
{
plot1( 0, x_labels[i], y_labels[i], alty_labels[i],
legend_texts[i], title_labels[i], line_labels[i] );
i++;
}
plend();
exit( 0 );
}
int
main(int argc, char *argv[])
{
char text[10];
int i, j, k;
PLFLT x, y;
/* Parse and process command line arguments */
(void) plparseopts(&argc, argv, PL_PARSE_FULL);
/* Initialize plplot */
plinit();
pladv(0);
/* Set up viewport and window */
plcol0(2);
plvpor(0.1, 1.0, 0.1, 0.9);
plwind(0.0, 1.0, 0.0, 1.3);
/* Draw the grid using plbox */
plbox("bcg", 0.1, 0, "bcg", 0.1, 0);
/* Write the digits below the frame */
plcol0(15);
for (i = 0; i <= 9; i++) {
sprintf(text, "%d", i);
plmtex("b", 1.5, (0.1 * i + 0.05), 0.5, text);
}
k = 0;
for (i = 0; i <= 12; i++) {
/* Write the digits to the left of the frame */
sprintf(text, "%d", 10 * i);
plmtex("lv", 1.0, (1.0 - (2 * i + 1) / 26.0), 1.0, text);
for (j = 0; j <= 9; j++) {
x = 0.1 * j + 0.05;
y = 1.25 - 0.1 * i;
/* Display the symbols (plpoin expects that x and y are arrays so */
/* pass pointers) */
if (k < 128)
plpoin(1, &x, &y, k);
k = k + 1;
}
}
plmtex("t", 1.5, 0.5, 0.5, "PLplot Example 6 - plpoin symbols");
plend();
exit(0);
}
int
main(int argc, char **argv)
{
PLFLT minx, maxx, miny, maxy;
int c;
/* Parse and process command line arguments */
(void) plparseopts(&argc, argv, PL_PARSE_FULL);
/* Longitude (x) and latitude (y) */
miny = -70;
maxy = 80;
plinit();
/* Cartesian plots */
/* Most of world */
minx = 190;
maxx = 190+360;
plcol0(1);
plenv(minx, maxx, miny, maxy, 1, -1);
plmap(NULL, "usaglobe", minx, maxx, miny, maxy);
/* The Americas */
minx = 190;
maxx = 340;
plcol0(1);
plenv(minx, maxx, miny, maxy, 1, -1);
plmap(NULL, "usaglobe", minx, maxx, miny, maxy);
/* Polar, Northern hemisphere */
minx = 0;
maxx = 360;
plenv(-75., 75., -75., 75., 1, -1);
plmap(mapform19,"globe", minx, maxx, miny, maxy);
pllsty(2);
plmeridians(mapform19,10.0, 10.0, 0.0, 360.0, -10.0, 80.0);
plend();
exit(0);
}
int
main( int argc, const char *argv[] )
{
int i, j;
PLFLT xx, yy;
/* Parse and process command line arguments */
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
/* Set up color map 0 */
/*
* plscmap0n(3);
*/
/* Set up color map 1 */
cmap1_init2();
/* Initialize plplot */
plinit();
/* Set up data array */
for ( i = 0; i < XPTS; i++ )
{
xx = (double) ( i - ( XPTS / 2 ) ) / (double) ( XPTS / 2 );
for ( j = 0; j < YPTS; j++ )
{
yy = (double) ( j - ( YPTS / 2 ) ) / (double) ( YPTS / 2 ) - 1.0;
z[i][j] = xx * xx - yy * yy + ( xx - yy ) / ( xx * xx + yy * yy + 0.1 );
}
}
f2mnmx( &z[0][0], XPTS, YPTS, &zmin, &zmax );
plot1();
plot2();
plot3();
plend();
exit( 0 );
}
int main( int argc, const char *argv[] )
{
cairo_surface_t *cairoSurface;
cairo_t *cairoContext;
cairoSurface = cairo_ps_surface_create( "ext-cairo-test.ps", 720, 540 );
cairoContext = cairo_create( cairoSurface );
plparseopts( &argc, argv, PL_PARSE_FULL );
plsdev( "extcairo" );
plinit();
pl_cmd( PLESC_DEVINIT, cairoContext );
plenv( 0.0, 1.0, 0.0, 1.0, 1, 0 );
pllab( "x", "y", "title" );
plend();
cairo_destroy( cairoContext );
cairo_surface_destroy( cairoSurface );
exit( 0 );
}
int
main( int argc, char *argv[] )
{
int i, j;
plparseopts( &argc, argv, PL_PARSE_FULL );
plinit();
pladv( 0 );
plvpor( 0.0, 1.0, 0.0, 1.0 );
plwind( 0.0, 1.0, 0.0, 1.0 );
plcol0( 0 );
plbox( "", 1.0, 0, "", 1.0, 0 );
plscmap0n( 7 );
plscmap0( red, green, blue, 7 );
plschr( 0, 4.0 );
plfont( 1 );
for ( i = 0; i < 4; i++ )
{
plcol0( i + 1 );
plfill( 4, px, py );
for ( j = 0; j < 4; j++ )
py [j] += 1.0 / 4.0;
}
plcol0( 0 );
for ( i = 0; i < 12; i++ )
plptex( sx [i], sy [i], 1.0, 0.0, 0.5, peace [i] );
plend();
exit( 0 );
}
int main( int argc, const char *argv[] )
{
PLFLT x[NSIZE], y[NSIZE];
PLFLT xmin = 0., xmax = 1., ymin = 0., ymax = 100.;
for (int i = 0; i < NSIZE; i++)
{
x[i] = (PLFLT) (i) / (PLFLT) (NSIZE-1);
y[i] = ymax * x[i] * x[i];
}
plparseopts( &argc, argv, PL_PARSE_FULL );
plinit();
plenv(xmin, xmax, ymin, ymax, 0, 0);
pllab("x", "y", "Simple PLplot demo of a 2D line plot");
plline(NSIZE, x, y);
plend();
return 0;
}
int
main( int argc, const char *argv[] )
{
/* Parse and process command line arguments */
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
/* Initialize plplot */
plinit();
pladv( 0 );
plvpor( 0.0, 1.0, 0.0, 1.0 );
plwind( 0.0, 1.0, 0.0, 1.0 );
plbox( "bc", 0.0, 0, "bc", 0.0, 0 );
plsvpa( 50.0, 150.0, 50.0, 100.0 );
plwind( 0.0, 1.0, 0.0, 1.0 );
plbox( "bc", 0.0, 0, "bc", 0.0, 0 );
plptex( 0.5, 0.5, 1.0, 0.0, 0.5, "BOX at (50,150,50,100)" );
plend();
exit( 0 );
}
int main( int argc, char *argv[] )
{
PLINT mode;
PLINT i;
// PLplot initialization
// Parse and process command line arguments
plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize PLplot
plinit();
// Check for drawing mode support
mode = plgdrawmode();
if ( mode == PL_DRAWMODE_UNKNOWN )
{
printf( "WARNING: This driver does not support drawing mode getting/setting" );
}
else
{
// Setup colors
initialize_colors();
// Draw one page per drawing mode
for ( i = 0; i < NUM_MODES; i++ )
{
draw_page( drawing_modes[i], drawing_mode_names[i] );
}
}
// Clean up
plend();
exit( 0 );
}
int
main( int argc, char *argv[] )
{
PLFLT xmin0, xmax0, ymin0, ymax0, zxmin0, zxmax0, zymin0, zymax0;
PLFLT xmin, xmax, ymin, ymax, zxmin, zxmax, zymin, zymax;
PLFLT xmid, ymid, wx, wy;
PLFLT mar0, aspect0, jx0, jy0, ori0;
PLFLT mar, aspect, jx, jy, ori;
PLINT win, level2, digmax, digits, compression1, compression2;
PLFLT xp0, yp0;
PLINT xleng0, yleng0, xoff0, yoff0;
PLFLT xp1, yp1;
PLINT xleng1, yleng1, xoff1, yoff1;
PLFLT xp2, yp2;
PLINT xleng2, yleng2, xoff2, yoff2;
PLINT fam0, num0, bmax0;
PLINT fam1, num1, bmax1;
PLINT fam2, num2, bmax2;
PLINT r0, g0, b0;
PLFLT a0;
PLINT r, g, b;
PLFLT a;
PLINT r1[] = { 0, 255 };
PLINT g1[] = { 255, 0 };
PLINT b1[] = { 0, 0 };
PLFLT a1[] = { 1.0, 1.0 };
int status;
char fnam[256];
// Parse and process command line arguments
status = 0;
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Test setting / getting familying parameters before plinit
// Save values set by plparseopts to be restored later.
plgfam( &fam0, &num0, &bmax0 );
fam1 = 0;
num1 = 10;
bmax1 = 1000;
plsfam( fam1, num1, bmax1 );
// Retrieve the same values?
plgfam( &fam2, &num2, &bmax2 );
printf( "family parameters: fam, num, bmax = %d %d %d\n", fam2, num2, bmax2 );
if ( fam2 != fam1 || num2 != num1 || bmax2 != bmax1 )
{
fputs( "plgfam test failed\n", stderr );
status = 1;
}
// Restore values set initially by plparseopts.
plsfam( fam0, num0, bmax0 );
// Test setting / getting page parameters before plinit
// Save values set by plparseopts to be restored later.
plgpage( &xp0, &yp0, &xleng0, &yleng0, &xoff0, &yoff0 );
xp1 = 200.;
yp1 = 200.;
xleng1 = 400;
yleng1 = 200;
xoff1 = 10;
yoff1 = 20;
plspage( xp1, yp1, xleng1, yleng1, xoff1, yoff1 );
// Retrieve the same values?
plgpage( &xp2, &yp2, &xleng2, &yleng2, &xoff2, &yoff2 );
printf( "page parameters: xp, yp, xleng, yleng, xoff, yoff = %f %f %d %d %d %d\n", xp2, yp2, xleng2, yleng2, xoff2, yoff2 );
if ( xp2 != xp1 || yp2 != yp1 || xleng2 != xleng1 || yleng2 != yleng1 ||
xoff2 != xoff1 || yoff2 != yoff1 )
{
fputs( "plgpage test failed\n", stderr );
status = 1;
}
// Restore values set initially by plparseopts.
plspage( xp0, yp0, xleng0, yleng0, xoff0, yoff0 );
// Test setting / getting compression parameter across plinit.
compression1 = 95;
plscompression( compression1 );
// Initialize plplot
plinit();
// Test if device initialization screwed around with the preset
// compression parameter.
plgcompression( &compression2 );
printf( "Output various PLplot parameters\n" );
printf( "compression parameter = %d\n", compression2 );
if ( compression2 != compression1 )
{
fputs( "plgcompression test failed\n", stderr );
status = 1;
}
// Exercise plscolor, plscol0, plscmap1, and plscmap1a to make sure
// they work without any obvious error messages.
plscolor( 1 );
plscol0( 1, 255, 0, 0 );
plscmap1( r1, g1, b1, 2 );
plscmap1a( r1, g1, b1, a1, 2 );
plglevel( &level2 );
printf( "level parameter = %d\n", level2 );
if ( level2 != 1 )
{
fputs( "plglevel test failed.\n", stderr );
status = 1;
}
pladv( 0 );
xmin0 = 0.01;
xmax0 = 0.99;
ymin0 = 0.02;
ymax0 = 0.49;
plvpor( xmin0, xmax0, ymin0, ymax0 );
plgvpd( &xmin, &xmax, &ymin, &ymax );
printf( "plvpor: xmin, xmax, ymin, ymax = %f %f %f %f\n", xmin, xmax, ymin, ymax );
if ( xmin != xmin0 || xmax != xmax0 || ymin != ymin0 || ymax != ymax0 )
{
fputs( "plgvpd test failed\n", stderr );
status = 1;
}
xmid = 0.5 * ( xmin + xmax );
ymid = 0.5 * ( ymin + ymax );
xmin0 = 0.2;
xmax0 = 0.3;
ymin0 = 0.4;
ymax0 = 0.5;
plwind( xmin0, xmax0, ymin0, ymax0 );
plgvpw( &xmin, &xmax, &ymin, &ymax );
printf( "plwind: xmin, xmax, ymin, ymax = %f %f %f %f\n", xmin, xmax, ymin, ymax );
if ( xmin != xmin0 || xmax != xmax0 || ymin != ymin0 || ymax != ymax0 )
{
fputs( "plgvpw test failed\n", stderr );
status = 1;
}
// Get world coordinates for middle of viewport
plcalc_world( xmid, ymid, &wx, &wy, &win );
printf( "world parameters: wx, wy, win = %f %f %d\n", wx, wy, win );
if ( fabs( wx - 0.5 * ( xmin + xmax ) ) > 1.0E-5 || fabs( wy - 0.5 * ( ymin + ymax ) ) > 1.0E-5 )
{
fputs( "plcalc_world test failed\n", stderr );
status = 1;
}
// Retrieve and print the name of the output file (if any).
// This goes to stderr not stdout since it will vary between tests and
// we want stdout to be identical for compare test.
plgfnam( fnam );
if ( fnam[0] == '\0' )
{
printf( "No output file name is set\n" );
}
else
{
printf( "Output file name read\n" );
}
fprintf( stderr, "Output file name is %s\n", fnam );
// Set and get the number of digits used to display axis labels
// Note digits is currently ignored in pls[xyz]ax and
// therefore it does not make sense to test the returned
// value
plsxax( 3, 0 );
plgxax( &digmax, &digits );
printf( "x axis parameters: digmax, digits = %d %d\n", digmax, digits );
if ( digmax != 3 )
{
fputs( "plgxax test failed\n", stderr );
status = 1;
}
plsyax( 4, 0 );
plgyax( &digmax, &digits );
printf( "y axis parameters: digmax, digits = %d %d\n", digmax, digits );
if ( digmax != 4 )
{
fputs( "plgyax test failed\n", stderr );
status = 1;
}
plszax( 5, 0 );
plgzax( &digmax, &digits );
printf( "z axis parameters: digmax, digits = %d %d\n", digmax, digits );
if ( digmax != 5 )
{
fputs( "plgzax test failed\n", stderr );
status = 1;
}
mar0 = 0.05;
aspect0 = PL_NOTSET;
jx0 = 0.1;
jy0 = 0.2;
plsdidev( mar0, aspect0, jx0, jy0 );
plgdidev( &mar, &aspect, &jx, &jy );
printf( "device-space window parameters: mar, aspect, jx, jy = %f %f %f %f\n", mar, aspect, jx, jy );
if ( mar != mar0 || jx != jx0 || jy != jy0 )
{
fputs( "plgdidev test failed\n", stderr );
status = 1;
}
ori0 = 1.0;
plsdiori( ori0 );
plgdiori( &ori );
printf( "ori parameter = %f\n", ori );
if ( ori != ori0 )
{
fputs( "plgdiori test failed\n", stderr );
status = 1;
}
xmin0 = 0.1;
ymin0 = 0.2;
xmax0 = 0.9;
ymax0 = 0.8;
plsdiplt( xmin0, ymin0, xmax0, ymax0 );
plgdiplt( &xmin, &ymin, &xmax, &ymax );
printf( "plot-space window parameters: xmin, ymin, xmax, ymax = %f %f %f %f\n", xmin, ymin, xmax, ymax );
if ( xmin != xmin0 || ymin != ymin0 || xmax != xmax0 || ymax != ymax0 )
{
fputs( "plgdiplt test failed\n", stderr );
status = 1;
}
zxmin0 = 0.1;
zymin0 = 0.1;
zxmax0 = 0.9;
zymax0 = 0.9;
plsdiplz( zxmin0, zymin0, zxmax0, zymax0 );
plgdiplt( &zxmin, &zymin, &zxmax, &zymax );
printf( "zoomed plot-space window parameters: xmin, ymin, xmax, ymax = %f %f %f %f\n", zxmin, zymin, zxmax, zymax );
if ( fabs( zxmin - ( xmin + ( xmax - xmin ) * zxmin0 ) ) > 1.0E-5 ||
fabs( zymin - ( ymin + ( ymax - ymin ) * zymin0 ) ) > 1.0E-5 ||
fabs( zxmax - ( xmin + ( xmax - xmin ) * zxmax0 ) ) > 1.0E-5 ||
fabs( zymax - ( ymin + ( ymax - ymin ) * zymax0 ) ) > 1.0E-5 )
{
fputs( "plsdiplz test failed\n", stderr );
status = 1;
}
r0 = 10;
g0 = 20;
b0 = 30;
plscolbg( r0, g0, b0 );
plgcolbg( &r, &g, &b );
printf( "background colour parameters: r, g, b = %d %d %d\n", r, g, b );
if ( r != r0 || g != g0 || b != b0 )
{
fputs( "plgcolbg test failed\n", stderr );
status = 1;
}
r0 = 20;
g0 = 30;
b0 = 40;
a0 = 0.5;
plscolbga( r0, g0, b0, a0 );
plgcolbga( &r, &g, &b, &a );
printf( "background/transparency colour parameters: r, g, b, a = %d %d %d %f\n", r, g, b, a );
if ( r != r0 || g != g0 || b != b0 || a != a0 )
{
fputs( "plgcolbga test failed\n", stderr );
status = 1;
}
plend();
exit( status );
}
int
main( int argc, const char *argv[] )
{
int i, j;
PLFLT xx, yy, argx, argy, distort;
static PLINT mark = 1500, space = 1500;
PLFLT **z, **w;
PLFLT xg1[XPTS], yg1[YPTS];
PLcGrid cgrid1;
PLcGrid2 cgrid2;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
// Set up function arrays
plAlloc2dGrid( &z, XPTS, YPTS );
plAlloc2dGrid( &w, XPTS, YPTS );
for ( i = 0; i < XPTS; i++ )
{
xx = (double) ( i - ( XPTS / 2 ) ) / (double) ( XPTS / 2 );
for ( j = 0; j < YPTS; j++ )
{
yy = (double) ( j - ( YPTS / 2 ) ) / (double) ( YPTS / 2 ) - 1.0;
z[i][j] = xx * xx - yy * yy;
w[i][j] = 2 * xx * yy;
}
}
// Set up grids
cgrid1.xg = xg1;
cgrid1.yg = yg1;
cgrid1.nx = XPTS;
cgrid1.ny = YPTS;
plAlloc2dGrid( &cgrid2.xg, XPTS, YPTS );
plAlloc2dGrid( &cgrid2.yg, XPTS, YPTS );
cgrid2.nx = XPTS;
cgrid2.ny = YPTS;
for ( i = 0; i < XPTS; i++ )
{
for ( j = 0; j < YPTS; j++ )
{
mypltr( (PLFLT) i, (PLFLT) j, &xx, &yy, NULL );
argx = xx * M_PI / 2;
argy = yy * M_PI / 2;
distort = 0.4;
cgrid1.xg[i] = xx + distort * cos( argx );
cgrid1.yg[j] = yy - distort * cos( argy );
cgrid2.xg[i][j] = xx + distort * cos( argx ) * cos( argy );
cgrid2.yg[i][j] = yy - distort * cos( argx ) * cos( argy );
}
}
// Plot using identity transform
//
// plenv(-1.0, 1.0, -1.0, 1.0, 0, 0);
// plcol0(2);
// plcont(z, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11, mypltr, NULL);
// plstyl(1, &mark, &space);
// plcol0(3);
// plcont(w, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11, mypltr, NULL);
// plstyl(0, &mark, &space);
// plcol0(1);
// pllab("X Coordinate", "Y Coordinate", "Streamlines of flow");
//
pl_setcontlabelformat( 4, 3 );
pl_setcontlabelparam( 0.006, 0.3, 0.1, 1 );
plenv( -1.0, 1.0, -1.0, 1.0, 0, 0 );
plcol0( 2 );
plcont( (const PLFLT * const *) z, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11, mypltr, NULL );
plstyl( 1, &mark, &space );
plcol0( 3 );
plcont( (const PLFLT * const *) w, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11, mypltr, NULL );
plstyl( 0, &mark, &space );
plcol0( 1 );
pllab( "X Coordinate", "Y Coordinate", "Streamlines of flow" );
pl_setcontlabelparam( 0.006, 0.3, 0.1, 0 );
// Plot using 1d coordinate transform
plenv( -1.0, 1.0, -1.0, 1.0, 0, 0 );
plcol0( 2 );
plcont( (const PLFLT * const *) z, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
pltr1, (void *) &cgrid1 );
plstyl( 1, &mark, &space );
plcol0( 3 );
plcont( (const PLFLT * const *) w, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
pltr1, (void *) &cgrid1 );
plstyl( 0, &mark, &space );
plcol0( 1 );
pllab( "X Coordinate", "Y Coordinate", "Streamlines of flow" );
//
// pl_setcontlabelparam(0.006, 0.3, 0.1, 1);
// plenv(-1.0, 1.0, -1.0, 1.0, 0, 0);
// plcol0(2);
// plcont((const PLFLT **) z, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
// pltr1, (void *) &cgrid1);
//
// plstyl(1, &mark, &space);
// plcol0(3);
// plcont((const PLFLT **) w, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
// pltr1, (void *) &cgrid1);
// plstyl(0, &mark, &space);
// plcol0(1);
// pllab("X Coordinate", "Y Coordinate", "Streamlines of flow");
// pl_setcontlabelparam(0.006, 0.3, 0.1, 0);
//
// Plot using 2d coordinate transform
plenv( -1.0, 1.0, -1.0, 1.0, 0, 0 );
plcol0( 2 );
plcont( (const PLFLT * const *) z, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
pltr2, (void *) &cgrid2 );
plstyl( 1, &mark, &space );
plcol0( 3 );
plcont( (const PLFLT * const *) w, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
pltr2, (void *) &cgrid2 );
plstyl( 0, &mark, &space );
plcol0( 1 );
pllab( "X Coordinate", "Y Coordinate", "Streamlines of flow" );
//
// pl_setcontlabelparam(0.006, 0.3, 0.1, 1);
// plenv(-1.0, 1.0, -1.0, 1.0, 0, 0);
// plcol0(2);
// plcont((const PLFLT **) z, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
// pltr2, (void *) &cgrid2);
//
// plstyl(1, &mark, &space);
// plcol0(3);
// plcont((const PLFLT **) w, XPTS, YPTS, 1, XPTS, 1, YPTS, clevel, 11,
// pltr2, (void *) &cgrid2);
// plstyl(0, &mark, &space);
// plcol0(1);
// pllab("X Coordinate", "Y Coordinate", "Streamlines of flow");
//
pl_setcontlabelparam( 0.006, 0.3, 0.1, 0 );
polar();
//
// pl_setcontlabelparam(0.006, 0.3, 0.1, 1);
// polar();
//
pl_setcontlabelparam( 0.006, 0.3, 0.1, 0 );
potential();
//
// pl_setcontlabelparam(0.006, 0.3, 0.1, 1);
// potential();
//
// Clean up
plFree2dGrid( z, XPTS, YPTS );
plFree2dGrid( w, XPTS, YPTS );
plFree2dGrid( cgrid2.xg, XPTS, YPTS );
plFree2dGrid( cgrid2.yg, XPTS, YPTS );
plend();
exit( 0 );
}
int
main( int argc, char *argv[] )
{
PLINT digmax, cur_strm, new_strm;
char ver[80];
// plplot initialization
// Parse and process command line arguments
plMergeOpts( options, "x01c options", notes );
plparseopts( &argc, argv, PL_PARSE_FULL );
// Get version number, just for kicks
plgver( ver );
fprintf( stdout, "PLplot library version: %s\n", ver );
// Initialize plplot
// Divide page into 2x2 plots
// Note: calling plstar replaces separate calls to plssub and plinit
plstar( 2, 2 );
// Select font set as per input flag
if ( fontset )
plfontld( 1 );
else
plfontld( 0 );
// Set up the data
// Original case
xscale = 6.;
yscale = 1.;
xoff = 0.;
yoff = 0.;
// Do a plot
plot1( 0 );
// Set up the data
xscale = 1.;
yscale = 0.0014;
yoff = 0.0185;
// Do a plot
digmax = 5;
plsyax( digmax, 0 );
plot1( 1 );
plot2();
plot3();
//
// Show how to save a plot:
// Open a new device, make it current, copy parameters,
// and replay the plot buffer
//
if ( f_name ) // command line option '-save filename'
{
printf( "The current plot was saved in color Postscript under the name `%s'.\n", f_name );
plgstrm( &cur_strm ); // get current stream
plmkstrm( &new_strm ); // create a new one
plsfnam( f_name ); // file name
plsdev( "psc" ); // device type
plcpstrm( cur_strm, 0 ); // copy old stream parameters to new stream
plreplot(); // do the save by replaying the plot buffer
plend1(); // finish the device
plsstrm( cur_strm ); // return to previous stream
}
// Let's get some user input
if ( locate_mode )
{
for (;; )
{
if ( !plGetCursor( &gin ) )
break;
if ( gin.keysym == PLK_Escape )
break;
pltext();
printf( "subwin = %d, wx = %f, wy = %f, dx = %f, dy = %f\n",
gin.subwindow, gin.wX, gin.wY, gin.dX, gin.dY );
printf( "keysym = 0x%02x, button = 0x%02x, string = '%s', type = 0x%02x, state = 0x%02x\n",
gin.keysym, gin.button, gin.string, gin.type, gin.state );
plgra();
}
}
// Don't forget to call plend() to finish off!
plend();
exit( 0 );
}
int
main( int argc, const char *argv[] )
{
int i, j, k;
PLFLT *x, *y, **z, *z_row_major, *z_col_major;
PLFLT dx = 2. / (PLFLT) ( XPTS - 1 );
PLFLT dy = 2. / (PLFLT) ( YPTS - 1 );
PLfGrid2 grid_c, grid_row_major, grid_col_major;
PLFLT xx, yy, r;
PLINT ifshade;
PLFLT zmin, zmax, step;
PLFLT clevel[LEVELS];
PLINT nlevel = LEVELS;
PLINT indexxmin = 0;
PLINT indexxmax = XPTS;
PLINT *indexymin;
PLINT *indexymax;
PLFLT **zlimited;
// parameters of ellipse (in x, y index coordinates) that limits the data.
// x0, y0 correspond to the exact floating point centre of the index
// range.
PLFLT x0 = 0.5 * (PLFLT) ( XPTS - 1 );
PLFLT a = 0.9 * x0;
PLFLT y0 = 0.5 * (PLFLT) ( YPTS - 1 );
PLFLT b = 0.7 * y0;
PLFLT square_root;
// Parse and process command line arguments
plMergeOpts( options, "x08c options", NULL );
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
// Allocate data structures
x = (PLFLT *) calloc( XPTS, sizeof ( PLFLT ) );
y = (PLFLT *) calloc( YPTS, sizeof ( PLFLT ) );
plAlloc2dGrid( &z, XPTS, YPTS );
z_row_major = (PLFLT *) malloc( XPTS * YPTS * sizeof ( PLFLT ) );
z_col_major = (PLFLT *) malloc( XPTS * YPTS * sizeof ( PLFLT ) );
if ( !z_row_major || !z_col_major )
plexit( "Memory allocation error" );
grid_c.f = z;
grid_row_major.f = (PLFLT **) z_row_major;
grid_col_major.f = (PLFLT **) z_col_major;
grid_c.nx = grid_row_major.nx = grid_col_major.nx = XPTS;
grid_c.ny = grid_row_major.ny = grid_col_major.ny = YPTS;
for ( i = 0; i < XPTS; i++ )
{
x[i] = -1. + (PLFLT) i * dx;
if ( rosen )
x[i] *= 1.5;
}
for ( j = 0; j < YPTS; j++ )
{
y[j] = -1. + (PLFLT) j * dy;
if ( rosen )
y[j] += 0.5;
}
for ( i = 0; i < XPTS; i++ )
{
xx = x[i];
for ( j = 0; j < YPTS; j++ )
{
yy = y[j];
if ( rosen )
{
z[i][j] = pow( 1. - xx, 2. ) + 100. * pow( yy - pow( xx, 2. ), 2. );
// The log argument might be zero for just the right grid.
if ( z[i][j] > 0. )
z[i][j] = log( z[i][j] );
else
z[i][j] = -5.; // -MAXFLOAT would mess-up up the scale
}
else
{
r = sqrt( xx * xx + yy * yy );
z[i][j] = exp( -r * r ) * cos( 2.0 * M_PI * r );
}
z_row_major[i * YPTS + j] = z[i][j];
z_col_major[i + XPTS * j] = z[i][j];
}
}
// Allocate and calculate y index ranges and corresponding zlimited.
plAlloc2dGrid( &zlimited, XPTS, YPTS );
indexymin = (PLINT *) malloc( XPTS * sizeof ( PLINT ) );
indexymax = (PLINT *) malloc( XPTS * sizeof ( PLINT ) );
if ( !indexymin || !indexymax )
plexit( "Memory allocation error" );
//printf("XPTS = %d\n", XPTS);
//printf("x0 = %f\n", x0);
//printf("a = %f\n", a);
//printf("YPTS = %d\n", YPTS);
//printf("y0 = %f\n", y0);
//printf("b = %f\n", b);
// These values should all be ignored because of the i index range.
#if 0
for ( i = 0; i < indexxmin; i++ )
{
indexymin[i] = 0;
indexymax[i] = YPTS;
for ( j = indexymin[i]; j < indexymax[i]; j++ )
// Mark with large value to check this is ignored.
zlimited[i][j] = 1.e300;
}
#endif
for ( i = indexxmin; i < indexxmax; i++ )
{
square_root = sqrt( 1. - MIN( 1., pow( ( (PLFLT) i - x0 ) / a, 2. ) ) );
// Add 0.5 to find nearest integer and therefore preserve symmetry
// with regard to lower and upper bound of y range.
indexymin[i] = MAX( 0, (PLINT) ( 0.5 + y0 - b * square_root ) );
// indexymax calculated with the convention that it is 1
// greater than highest valid index.
indexymax[i] = MIN( YPTS, 1 + (PLINT) ( 0.5 + y0 + b * square_root ) );
//printf("i, b*square_root, indexymin[i], YPTS - indexymax[i] = %d, %e, %d, %d\n", i, b*square_root, indexymin[i], YPTS - indexymax[i]);
#if 0
// These values should all be ignored because of the j index range.
for ( j = 0; j < indexymin[i]; j++ )
// Mark with large value to check this is ignored.
zlimited[i][j] = 1.e300;
#endif
for ( j = indexymin[i]; j < indexymax[i]; j++ )
zlimited[i][j] = z[i][j];
#if 0
// These values should all be ignored because of the j index range.
for ( j = indexymax[i]; j < YPTS; j++ )
// Mark with large value to check this is ignored.
zlimited[i][j] = 1.e300;
#endif
}
#if 0
// These values should all be ignored because of the i index range.
for ( i = indexxmax; i < XPTS; i++ )
{
indexymin[i] = 0;
indexymax[i] = YPTS;
for ( j = indexymin[i]; j < indexymax[i]; j++ )
// Mark with large value to check this is ignored.
zlimited[i][j] = 1.e300;
}
#endif
plMinMax2dGrid( (const PLFLT * const *) z, XPTS, YPTS, &zmax, &zmin );
step = ( zmax - zmin ) / ( nlevel + 1 );
for ( i = 0; i < nlevel; i++ )
clevel[i] = zmin + step + step * i;
pllightsource( 1., 1., 1. );
for ( k = 0; k < 2; k++ )
{
for ( ifshade = 0; ifshade < 5; ifshade++ )
{
pladv( 0 );
plvpor( 0.0, 1.0, 0.0, 0.9 );
plwind( -1.0, 1.0, -0.9, 1.1 );
plcol0( 3 );
plmtex( "t", 1.0, 0.5, 0.5, title[k] );
plcol0( 1 );
if ( rosen )
plw3d( 1.0, 1.0, 1.0, -1.5, 1.5, -0.5, 1.5, zmin, zmax, alt[k], az[k] );
else
plw3d( 1.0, 1.0, 1.0, -1.0, 1.0, -1.0, 1.0, zmin, zmax, alt[k], az[k] );
plbox3( "bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 0 );
plcol0( 2 );
if ( ifshade == 0 ) // diffuse light surface plot
{
cmap1_init( 1 );
plfsurf3d( x, y, plf2ops_c(), (PLPointer) z, XPTS, YPTS, 0, NULL, 0 );
}
else if ( ifshade == 1 ) // magnitude colored plot
{
cmap1_init( 0 );
plfsurf3d( x, y, plf2ops_grid_c(), ( PLPointer ) & grid_c, XPTS, YPTS, MAG_COLOR, NULL, 0 );
}
else if ( ifshade == 2 ) // magnitude colored plot with faceted squares
{
cmap1_init( 0 );
plfsurf3d( x, y, plf2ops_grid_row_major(), ( PLPointer ) & grid_row_major, XPTS, YPTS, MAG_COLOR | FACETED, NULL, 0 );
}
else if ( ifshade == 3 ) // magnitude colored plot with contours
{
cmap1_init( 0 );
plfsurf3d( x, y, plf2ops_grid_col_major(), ( PLPointer ) & grid_col_major, XPTS, YPTS, MAG_COLOR | SURF_CONT | BASE_CONT, clevel, nlevel );
}
else // magnitude colored plot with contours and index limits.
{
cmap1_init( 0 );
plsurf3dl( x, y, (const PLFLT * const *) zlimited, XPTS, YPTS, MAG_COLOR | SURF_CONT | BASE_CONT, clevel, nlevel, indexxmin, indexxmax, indexymin, indexymax );
}
}
}
// Clean up
free( (void *) x );
free( (void *) y );
plFree2dGrid( z, XPTS, YPTS );
free( (void *) z_row_major );
free( (void *) z_col_major );
plFree2dGrid( zlimited, XPTS, YPTS );
free( (void *) indexymin );
free( (void *) indexymax );
plend();
exit( 0 );
}
int
main(int argc, char *argv[])
{
int i, j;
PLFLT dtr, theta, dx, dy, r;
char text[4];
static PLFLT x0[361], y0[361];
static PLFLT x[361], y[361];
dtr = PI / 180.0;
for (i = 0; i <= 360; i++) {
x0[i] = cos(dtr * i);
y0[i] = sin(dtr * i);
}
/* Parse and process command line arguments */
(void) plparseopts(&argc, argv, PL_PARSE_FULL);
/* Initialize plplot */
plinit();
/* Set up viewport and window, but do not draw box */
plenv(-1.3, 1.3, -1.3, 1.3, 1, -2);
for (i = 1; i <= 10; i++) {
for (j = 0; j <= 360; j++) {
x[j] = 0.1 * i * x0[j];
y[j] = 0.1 * i * y0[j];
}
/* Draw circles for polar grid */
plline(361, x, y);
}
plcol0(2);
for (i = 0; i <= 11; i++) {
theta = 30.0 * i;
dx = cos(dtr * theta);
dy = sin(dtr * theta);
/* Draw radial spokes for polar grid */
pljoin(0.0, 0.0, dx, dy);
sprintf(text, "%d", ROUND(theta));
/* Write labels for angle */
/* Slightly off zero to avoid floating point logic flips at 90 and 270 deg. */
if (dx >= -0.00001)
plptex(dx, dy, dx, dy, -0.15, text);
else
plptex(dx, dy, -dx, -dy, 1.15, text);
}
/* Draw the graph */
for (i = 0; i <= 360; i++) {
r = sin(dtr * (5 * i));
x[i] = x0[i] * r;
y[i] = y0[i] * r;
}
plcol0(3);
plline(361, x, y);
plcol0(4);
plmtex("t", 2.0, 0.5, 0.5, "#frPLplot Example 3 - r(#gh)=sin 5#gh");
/* Close the plot at end */
plend();
exit(0);
}
int
main( int argc, const char *argv[] )
{
int i, j, k;
int npts = 0;
PLFLT xextreme[10][2];
PLFLT yextreme[10][2];
PLFLT x0[10];
PLFLT y0[10];
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plssub( 3, 3 );
plinit();
xextreme[0][0] = -120.0; xextreme[0][1] = 120.0; yextreme[0][0] = -120.0; yextreme[0][1] = 120.0;
xextreme[1][0] = -120.0; xextreme[1][1] = 120.0; yextreme[1][0] = 20.0; yextreme[1][1] = 120.0;
xextreme[2][0] = -120.0; xextreme[2][1] = 120.0; yextreme[2][0] = -20.0; yextreme[2][1] = 120.0;
xextreme[3][0] = -80.0; xextreme[3][1] = 80.0; yextreme[3][0] = -20.0; yextreme[3][1] = 120.0;
xextreme[4][0] = -220.0; xextreme[4][1] = -120.0; yextreme[4][0] = -120.0; yextreme[4][1] = 120.0;
xextreme[5][0] = -20.0; xextreme[5][1] = 20.0; yextreme[5][0] = -120.0; yextreme[5][1] = 120.0;
xextreme[6][0] = -20.0; xextreme[6][1] = 20.0; yextreme[6][0] = -20.0; yextreme[6][1] = 20.0;
xextreme[7][0] = -80.0; xextreme[7][1] = 80.0; yextreme[7][0] = -80.0; yextreme[7][1] = 80.0;
xextreme[8][0] = 20.0; xextreme[8][1] = 120.0; yextreme[8][0] = -120.0; yextreme[8][1] = 120.0;
for ( k = 0; k < 2; k++ )
{
for ( j = 0; j < 4; j++ )
{
if ( j == 0 )
{
// Polygon 1: a diamond
x0[0] = 0; y0[0] = -100;
x0[1] = -100; y0[1] = 0;
x0[2] = 0; y0[2] = 100;
x0[3] = 100; y0[3] = 0;
npts = 4;
}
if ( j == 1 )
{
// Polygon 1: a diamond - reverse direction
x0[3] = 0; y0[3] = -100;
x0[2] = -100; y0[2] = 0;
x0[1] = 0; y0[1] = 100;
x0[0] = 100; y0[0] = 0;
npts = 4;
}
if ( j == 2 )
{
// Polygon 2: a square with punctures
x0[0] = -100; y0[0] = -100;
x0[1] = -100; y0[1] = -80;
x0[2] = 80; y0[2] = 0;
x0[3] = -100; y0[3] = 80;
x0[4] = -100; y0[4] = 100;
x0[5] = -80; y0[5] = 100;
x0[6] = 0; y0[6] = 80;
x0[7] = 80; y0[7] = 100;
x0[8] = 100; y0[8] = 100;
x0[9] = 100; y0[9] = -100;
npts = 10;
}
if ( j == 3 )
{
// Polygon 2: a square with punctures - reversed direction
x0[9] = -100; y0[9] = -100;
x0[8] = -100; y0[8] = -80;
x0[7] = 80; y0[7] = 0;
x0[6] = -100; y0[6] = 80;
x0[5] = -100; y0[5] = 100;
x0[4] = -80; y0[4] = 100;
x0[3] = 0; y0[3] = 80;
x0[2] = 80; y0[2] = 100;
x0[1] = 100; y0[1] = 100;
x0[0] = 100; y0[0] = -100;
npts = 10;
}
for ( i = 0; i < 9; i++ )
{
pladv( 0 );
plvsta();
plwind( xextreme[i][0], xextreme[i][1], yextreme[i][0], yextreme[i][1] );
plcol0( 2 );
plbox( "bc", 1.0, 0, "bcnv", 10.0, 0 );
plcol0( 1 );
plpsty( 0 );
if ( k == 0 )
plfill( npts, x0, y0 );
else
plgradient( npts, x0, y0, 45. );
plcol0( 2 );
pllsty( 1 );
plline( npts, x0, y0 );
}
}
}
// Don't forget to call plend() to finish off!
plend();
exit( 0 );
}
int
main( int argc, const char *argv[] )
{
int i;
PLFLT dtr, theta, dx, dy, r, offset;
char text[4];
static PLFLT x0[361], y0[361];
static PLFLT x[361], y[361];
dtr = M_PI / 180.0;
for ( i = 0; i <= 360; i++ )
{
x0[i] = cos( dtr * i );
y0[i] = sin( dtr * i );
}
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Set orientation to portrait - note not all device drivers
// support this, in particular most interactive drivers do not
plsori( 1 );
// Initialize plplot
plinit();
// Set up viewport and window, but do not draw box
plenv( -1.3, 1.3, -1.3, 1.3, 1, -2 );
// Draw circles for polar grid
for ( i = 1; i <= 10; i++ )
{
plarc( 0.0, 0.0, 0.1 * i, 0.1 * i, 0.0, 360.0, 0.0, 0 );
}
plcol0( 2 );
for ( i = 0; i <= 11; i++ )
{
theta = 30.0 * i;
dx = cos( dtr * theta );
dy = sin( dtr * theta );
// Draw radial spokes for polar grid
pljoin( 0.0, 0.0, dx, dy );
sprintf( text, "%d", ROUND( theta ) );
// Write labels for angle
if ( theta < 9.99 )
{
offset = 0.45;
}
else if ( theta < 99.9 )
{
offset = 0.30;
}
else
{
offset = 0.15;
}
// Slightly off zero to avoid floating point logic flips at 90 and 270 deg.
if ( dx >= -0.00001 )
plptex( dx, dy, dx, dy, -offset, text );
else
plptex( dx, dy, -dx, -dy, 1. + offset, text );
}
// Draw the graph
for ( i = 0; i <= 360; i++ )
{
r = sin( dtr * ( 5 * i ) );
x[i] = x0[i] * r;
y[i] = y0[i] * r;
}
plcol0( 3 );
plline( 361, x, y );
plcol0( 4 );
plmtex( "t", 2.0, 0.5, 0.5, "#frPLplot Example 3 - r(#gh)=sin 5#gh" );
// Close the plot at end
plend();
exit( 0 );
}
int
main( int argc, char **argv )
{
PLFLT minx, maxx, miny, maxy;
PLFLT x, y;
//variables for the shapelib example
const PLINT nbeachareas = 2;
const PLINT beachareas[] = { 23, 24 };
const PLINT nwoodlandareas = 94;
PLINT woodlandareas[94];
const PLINT nshingleareas = 22;
const PLINT shingleareas[] = { 0, 1, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 217, 2424, 2425, 2426, 2427, 2428, 2491, 2577 };
const PLINT ncragareas = 2024;
PLINT cragareas[2024];
const PLINT majorroads[] = { 33, 48, 71, 83, 89, 90, 101, 102, 111 };
int i;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Longitude (x) and latitude (y)
miny = -70;
maxy = 80;
plinit();
// Cartesian plots
// Most of world
minx = -170;
maxx = minx + 360;
// Setup a custom latitude and longitude-based scaling function.
plslabelfunc( geolocation_labeler, NULL );
plcol0( 1 );
plenv( minx, maxx, miny, maxy, 1, 70 );
plmap( NULL, "usaglobe", minx, maxx, miny, maxy );
// The Americas
minx = 190;
maxx = 340;
plcol0( 1 );
plenv( minx, maxx, miny, maxy, 1, 70 );
plmap( NULL, "usaglobe", minx, maxx, miny, maxy );
// Clear the labeling function
plslabelfunc( NULL, NULL );
// Polar, Northern hemisphere
minx = 0;
maxx = 360;
plenv( -75., 75., -75., 75., 1, -1 );
plmap( mapform19, "globe", minx, maxx, miny, maxy );
pllsty( 2 );
plmeridians( mapform19, 10.0, 10.0, 0.0, 360.0, -10.0, 80.0 );
// Polar, Northern hemisphere, this time with a PLplot-wide transform
minx = 0;
maxx = 360;
plstransform( map_transform, NULL );
pllsty( 1 );
plenv( -75., 75., -75., 75., 1, -1 );
// No need to set the map transform here as the global transform will be
// used.
plmap( NULL, "globe", minx, maxx, miny, maxy );
pllsty( 2 );
plmeridians( NULL, 10.0, 10.0, 0.0, 360.0, -10.0, 80.0 );
// Show Baltimore, MD on the map
plcol0( 2 );
plssym( 0.0, 2.0 );
x = -76.6125;
y = 39.2902778;
plpoin( 1, &x, &y, 18 );
plssym( 0.0, 1.0 );
plptex( -76.6125, 43.0, 0.0, 0.0, 0.0, "Baltimore, MD" );
// For C, this is how the global transform is cleared
plstransform( NULL, NULL );
// An example using shapefiles. The shapefiles used are from Ordnance Survey, UK.
// These were chosen because they provide shapefiles for small grid boxes which
// are easilly manageable for this demo.
pllsty( 1 );
minx = 240570;
maxx = 621109;
miny = 87822;
maxy = 722770;
plscol0( 0, 255, 255, 255 );
plscol0( 1, 0, 0, 0 );
plscol0( 2, 150, 150, 150 );
plscol0( 3, 0, 50, 200 );
plscol0( 4, 50, 50, 50 );
plscol0( 5, 150, 0, 0 );
plscol0( 6, 100, 100, 255 );
minx = 265000;
maxx = 270000;
miny = 145000;
maxy = 150000;
plscol0( 0, 255, 255, 255 ); //white
plscol0( 1, 0, 0, 0 ); //black
plscol0( 2, 255, 200, 0 ); //yelow for sand
plscol0( 3, 60, 230, 60 ); // green for woodland
plscol0( 4, 210, 120, 60 ); //brown for contours
plscol0( 5, 150, 0, 0 ); //red for major roads
plscol0( 6, 180, 180, 255 ); //pale blue for water
plscol0( 7, 100, 100, 100 ); //pale grey for shingle or boulders
plscol0( 8, 100, 100, 100 ); //dark grey for custom polygons - generally crags
plcol0( 1 );
plenv( minx, maxx, miny, maxy, 1, -1 );
pllab( "", "", "Martinhoe CP, Exmoor National Park, UK (shapelib only)" );
//Beach
plcol0( 2 );
plmapfill( NULL, "ss/ss64ne_Landform_Area", minx, maxx, miny, maxy, beachareas, nbeachareas );
//woodland
plcol0( 3 );
for ( i = 0; i < nwoodlandareas; ++i )
woodlandareas[i] = i + 218;
plmapfill( NULL, "ss/ss64ne_Landform_Area", minx, maxx, miny, maxy, (PLINT_VECTOR) woodlandareas, nwoodlandareas );
//shingle or boulders
plcol0( 7 );
plmapfill( NULL, "ss/ss64ne_Landform_Area", minx, maxx, miny, maxy, shingleareas, nshingleareas );
//crags
plcol0( 8 );
for ( i = 0; i < ncragareas; ++i )
cragareas[i] = i + 325;
plmapfill( NULL, "ss/ss64ne_Landform_Area", minx, maxx, miny, maxy, (PLINT_VECTOR) cragareas, ncragareas );
//draw contours, we need to separate contours from high/low coastline
//draw_contours(pls, "ss/SS64_line", 433, 20, 4, 3, minx, maxx, miny, maxy );
plcol0( 4 );
plmapline( NULL, "ss/ss64ne_Height_Contours", minx, maxx, miny, maxy, NULL, 0 );
//draw the sea and surface water
plwidth( 0.0 );
plcol0( 6 );
plmapfill( NULL, "ss/ss64ne_Water_Area", minx, maxx, miny, maxy, NULL, 0 );
plwidth( 2.0 );
plmapfill( NULL, "ss/ss64ne_Water_Line", minx, maxx, miny, maxy, NULL, 0 );
//draw the roads, first with black and then thinner with colour to give an
//an outlined appearance
plwidth( 5.0 );
plcol0( 1 );
plmapline( NULL, "ss/ss64ne_Road_Centreline", minx, maxx, miny, maxy, NULL, 0 );
plwidth( 3.0 );
plcol0( 0 );
plmapline( NULL, "ss/ss64ne_Road_Centreline", minx, maxx, miny, maxy, NULL, 0 );
plcol0( 5 );
plmapline( NULL, "ss/ss64ne_Road_Centreline", minx, maxx, miny, maxy, majorroads, 9 );
//draw buildings
plwidth( 1.0 );
plcol0( 1 );
plmapfill( NULL, "ss/ss64ne_Building_Area", minx, maxx, miny, maxy, NULL, 0 );
//labels
plsfci( 0x80000100 );
plschr( 0, 0.8 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "MARTINHOE CP", minx, maxx, miny, maxy, 202 );
plschr( 0, 0.7 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Heale\nDown", minx, maxx, miny, maxy, 13 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "South\nDown", minx, maxx, miny, maxy, 34 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Martinhoe\nCommon", minx, maxx, miny, maxy, 42 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Woody Bay", minx, maxx, miny, maxy, 211 );
plschr( 0, 0.6 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Mill Wood", minx, maxx, miny, maxy, 16 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Heale Wood", minx, maxx, miny, maxy, 17 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 1.0, "Bodley", minx, maxx, miny, maxy, 31 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.0, "Martinhoe", minx, maxx, miny, maxy, 37 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Woolhanger\nCommon", minx, maxx, miny, maxy, 60 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "West Ilkerton\nCommon", minx, maxx, miny, maxy, 61 );
plmaptex( NULL, "ss/ss64ne_General_Text", 1.0, 0.0, 0.5, "Caffyns\nHeanton\nDown", minx, maxx, miny, maxy, 62 );
plend();
exit( 0 );
}
int
main(int argc, char *argv[])
{
int i, digmax;
int xleng0 = 400, yleng0 = 300, xoff0 = 200, yoff0 = 200;
int xleng1 = 400, yleng1 = 300, xoff1 = 500, yoff1 = 500;
/* Select either TK or DP driver and use a small window */
/* Using DP results in a crash at the end due to some odd cleanup problems */
/* The geometry strings MUST be in writable memory */
char geometry_master[] = "500x410+100+200";
char geometry_slave[] = "500x410+650+200";
char driver[80];
/* plplot initialization */
/* Parse and process command line arguments */
(void) plparseopts(&argc, argv, PL_PARSE_FULL);
plgdev(driver);
printf("Demo of multiple output streams via the %s driver.\n", driver);
printf("Running with the second stream as slave to the first.\n");
printf("\n");
/* Set up first stream */
plsetopt("geometry", geometry_master);
plsdev(driver);
plssub(2, 2);
plinit();
/* Start next stream */
plsstrm(1);
/* Turn off pause to make this a slave (must follow master) */
plsetopt("geometry", geometry_slave);
plspause(0);
plsdev(driver);
plinit();
/* Set up the data & plot */
/* Original case */
plsstrm(0);
xscale = 6.;
yscale = 1.;
xoff = 0.;
yoff = 0.;
plot1();
/* Set up the data & plot */
xscale = 1.;
yscale = 1.e+6;
plot1();
/* Set up the data & plot */
xscale = 1.;
yscale = 1.e-6;
digmax = 2;
plsyax(digmax, 0);
plot1();
/* Set up the data & plot */
xscale = 1.;
yscale = 0.0014;
yoff = 0.0185;
digmax = 5;
plsyax(digmax, 0);
plot1();
/* To slave */
/* The pleop() ensures the eop indicator gets lit. */
plsstrm(1);
plot4();
pleop();
/* Back to master */
plsstrm(0);
plot2();
plot3();
/* To slave */
plsstrm(1);
plot5();
pleop();
/* Back to master to wait for user to advance */
plsstrm(0);
pleop();
/* Call plend to finish off. */
plend();
exit(0);
}
int
main(int argc, char *argv[])
{
int i, j, k;
PLFLT *x, *y, **z;
PLFLT xx, yy;
int nlevel = LEVELS;
PLFLT clevel[LEVELS];
PLFLT zmin, zmax, step;
/* Parse and process command line arguments */
(void) plparseopts(&argc, argv, PL_PARSE_FULL);
/* Initialize plplot */
plinit();
x = (PLFLT *) calloc(XPTS, sizeof(PLFLT));
y = (PLFLT *) calloc(YPTS, sizeof(PLFLT));
plAlloc2dGrid(&z, XPTS, YPTS);
for (i = 0; i < XPTS; i++) {
x[i] = 3. * (double) (i - (XPTS / 2)) / (double) (XPTS / 2);
}
for (i = 0; i < YPTS; i++)
y[i] = 3.* (double) (i - (YPTS / 2)) / (double) (YPTS / 2);
for (i = 0; i < XPTS; i++) {
xx = x[i];
for (j = 0; j < YPTS; j++) {
yy = y[j];
z[i][j] = 3. * (1.-xx)*(1.-xx) * exp(-(xx*xx) - (yy+1.)*(yy+1.)) -
10. * (xx/5. - pow(xx,3.) - pow(yy,5.)) * exp(-xx*xx-yy*yy) -
1./3. * exp(-(xx+1)*(xx+1) - (yy*yy));
if(0) { /* Jungfraujoch/Interlaken */
if (z[i][j] < -1.)
z[i][j] = -1.;
}
}
}
plMinMax2dGrid(z, XPTS, YPTS, &zmax, &zmin);
step = (zmax - zmin)/(nlevel+1);
for (i=0; i<nlevel; i++)
clevel[i] = zmin + step + step*i;
cmap1_init();
for (k = 0; k < 2; k++) {
for (i=0; i<4; i++) {
pladv(0);
plcol0(1);
plvpor(0.0, 1.0, 0.0, 0.9);
plwind(-1.0, 1.0, -1.0, 1.5);
plw3d(1.0, 1.0, 1.2, -3.0, 3.0, -3.0, 3.0, zmin, zmax, alt[k], az[k]);
plbox3("bnstu", "x axis", 0.0, 0,
"bnstu", "y axis", 0.0, 0,
"bcdmnstuv", "z axis", 0.0, 4);
plcol0(2);
/* wireframe plot */
if (i==0)
plmesh(x, y, z, XPTS, YPTS, opt[k]);
/* magnitude colored wireframe plot */
else if (i==1)
plmesh(x, y, z, XPTS, YPTS, opt[k] | MAG_COLOR);
/* magnitude colored wireframe plot with sides */
else if (i==2)
plot3d(x, y, z, XPTS, YPTS, opt[k] | MAG_COLOR, 1);
/* magnitude colored wireframe plot with base contour */
else if (i==3)
plmeshc(x, y, z, XPTS, YPTS, opt[k] | MAG_COLOR | BASE_CONT,
clevel, nlevel);
plcol0(3);
plmtex("t", 1.0, 0.5, 0.5, title[k]);
}
}
/* Clean up */
free((void *) x);
free((void *) y);
plFree2dGrid(z, XPTS, YPTS);
plend();
exit(0);
}
int
main(int argc, char *argv[])
{
PLFLT *x, *y, *z, *clev;
PLFLT *xg, *yg, **zg, **szg;
PLFLT zmin, zmax, lzm, lzM;
long ct;
int i, j, k;
PLINT alg;
char ylab[40], xlab[40];
char *title[] = {"Cubic Spline Approximation",
"Delaunay Linear Interpolation",
"Natural Neighbors Interpolation",
"KNN Inv. Distance Weighted",
"3NN Linear Interpolation",
"4NN Around Inv. Dist. Weighted"};
PLFLT opt[] = {0., 0., 0., 0., 0., 0.};
xm = ym = -0.2;
xM = yM = 0.8;
plMergeOpts(options, "x21c options", NULL);
plparseopts(&argc, argv, PL_PARSE_FULL);
opt[2] = wmin;
opt[3] = (PLFLT) knn_order;
opt[4] = threshold;
/* Initialize plplot */
plinit();
create_data(&x, &y, &z, pts); /* the sampled data */
zmin = z[0];
zmax = z[0];
for (i=1; i<pts; i++) {
if (z[i] > zmax)
zmax = z[i];
if (z[i] < zmin)
zmin = z[i];
}
create_grid(&xg, xp, &yg, yp); /* grid the data at */
plAlloc2dGrid(&zg, xp, yp); /* the output grided data */
clev = (PLFLT *) malloc(nl * sizeof(PLFLT));
sprintf(xlab, "Npts=%d gridx=%d gridy=%d", pts, xp, yp);
plcol0(1);
plenv(xm, xM, ym, yM, 2, 0);
plcol0(15);
pllab(xlab, "", "The original data");
plcol0(2);
plpoin(pts, x, y, 5);
pladv(0);
plssub(3,2);
for (k=0; k<2; k++) {
pladv(0);
for (alg=1; alg<7; alg++) {
ct = clock();
plgriddata(x, y, z, pts, xg, xp, yg, yp, zg, alg, opt[alg-1]);
sprintf(xlab, "time=%d ms", (clock() - ct)/1000);
sprintf(ylab, "opt=%.3f", opt[alg-1]);
/* - CSA can generate NaNs (only interpolates?!).
* - DTLI and NNI can generate NaNs for points outside the convex hull
* of the data points.
* - NNLI can generate NaNs if a sufficiently thick triangle is not found
*
* PLplot should be NaN/Inf aware, but changing it now is quite a job...
* so, instead of not plotting the NaN regions, a weighted average over
* the neighbors is done.
*/
if (alg == GRID_CSA || alg == GRID_DTLI || alg == GRID_NNLI || alg == GRID_NNI) {
int ii, jj;
PLFLT dist, d;
for (i=0; i<xp; i++) {
for (j=0; j<yp; j++) {
if (isnan(zg[i][j])) { /* average (IDW) over the 8 neighbors */
zg[i][j] = 0.; dist = 0.;
for (ii=i-1; ii<=i+1 && ii<xp; ii++) {
for (jj=j-1; jj<=j+1 && jj<yp; jj++) {
if (ii >= 0 && jj >= 0 && !isnan(zg[ii][jj])) {
d = (abs(ii-i) + abs(jj-j)) == 1 ? 1. : 1.4142;
zg[i][j] += zg[ii][jj]/(d*d);
dist += d;
}
}
}
if (dist != 0.)
zg[i][j] /= dist;
else
zg[i][j] = zmin;
}
}
}
}
plMinMax2dGrid(zg, xp, yp, &lzM, &lzm);
plcol0(1);
pladv(alg);
if (k == 0) {
lzm = MIN(lzm, zmin);
lzM = MAX(lzM, zmax);
for (i=0; i<nl; i++)
clev[i] = lzm + (lzM-lzm)/(nl-1)*i;
plenv0(xm, xM, ym, yM, 2, 0);
plcol0(15);
pllab(xlab, ylab, title[alg-1]);
plshades(zg, xp, yp, NULL, xm, xM, ym, yM,
clev, nl, 1, 0, 1, plfill, 1, NULL, NULL);
plcol0(2);
} else {
for (i=0; i<nl; i++)
clev[i] = lzm + (lzM-lzm)/(nl-1)*i;
cmap1_init();
plvpor(0.0, 1.0, 0.0, 0.9);
plwind(-1.0, 1.0, -1.0, 1.5);
/*
* For the comparition to be fair, all plots should have the
* same z values, but to get the max/min of the data generated
* by all algorithms would imply two passes. Keep it simple.
*
* plw3d(1., 1., 1., xm, xM, ym, yM, zmin, zmax, 30, -60);
*/
plw3d(1., 1., 1., xm, xM, ym, yM, lzm, lzM, 30, -60);
plbox3("bnstu", ylab, 0.0, 0,
"bnstu", xlab, 0.0, 0,
"bcdmnstuv", "", 0.0, 4);
plcol0(15);
pllab("", "", title[alg-1]);
plot3dc(xg, yg, zg, xp, yp, DRAW_LINEXY | MAG_COLOR | BASE_CONT, clev, nl);
}
}
}
plend();
free_data(x, y, z);
free_grid(xg, yg);
free((void *)clev);
plFree2dGrid(zg, xp, yp);
}
int
main( int argc, const char *argv[] )
{
int i, j, dthet, theta0, theta1, theta;
PLFLT just, dx, dy;
static PLFLT x[500], y[500], per[5];
per[0] = 10.;
per[1] = 32.;
per[2] = 12.;
per[3] = 30.;
per[4] = 16.;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
pladv( 0 );
// Ensure window has aspect ratio of one so circle is
// plotted as a circle.
plvasp( 1.0 );
plwind( 0., 10., 0., 10. );
// plenv(0., 10., 0., 10., 1, -2);
plcol0( 2 );
// n.b. all theta quantities scaled by 2*M_PI/500 to be integers to avoid
// floating point logic problems.
theta0 = 0;
dthet = 1;
for ( i = 0; i <= 4; i++ )
{
j = 0;
x[j] = 5.;
y[j++] = 5.;
// n.b. the theta quantities multiplied by 2*M_PI/500 afterward so
// in fact per is interpreted as a percentage.
theta1 = (int) ( theta0 + 5 * per[i] );
if ( i == 4 )
theta1 = 500;
for ( theta = theta0; theta <= theta1; theta += dthet )
{
x[j] = 5 + 3 * cos( ( 2. * M_PI / 500. ) * theta );
y[j++] = 5 + 3 * sin( ( 2. * M_PI / 500. ) * theta );
}
plcol0( i + 1 );
plpsty( ( i + 3 ) % 8 + 1 );
plfill( j, x, y );
plcol0( 1 );
plline( j, x, y );
just = ( 2. * M_PI / 500. ) * ( theta0 + theta1 ) / 2.;
dx = .25 * cos( just );
dy = .25 * sin( just );
if ( ( theta0 + theta1 ) < 250 || ( theta0 + theta1 ) > 750 )
just = 0.;
else
just = 1.;
plptex( ( x[j / 2] + dx ), ( y[j / 2] + dy ), 1.0, 0.0, just, text[i] );
theta0 = theta - dthet;
}
plfont( 2 );
plschr( 0., 1.3 );
plptex( 5.0, 9.0, 1.0, 0.0, 0.5, "Percentage of Sales" );
// Don't forget to call PLEND to finish off!
plend();
exit( 0 );
}
int
main(int argc, char *argv[])
{
/* ============== Begin variable definition section. ============= */
/*
* i, j, and k are counting variables used in loops and such. M is the
* number of lines to be plotted and N is the number of sample points
* for each line.
*/
int i, j, k, M, N, leglen;
/*
* x is a pointer to an array containing the N x-coordinate values. y
* points to an array of M pointers each of which points to an array
* containing the N y-coordinate values for that line.
*/
PLFLT *x, **y;
/* Define storage for the min and max values of the data. */
PLFLT xmin, xmax, ymin, ymax, xdiff, ydiff;
/* Define storage for the filename and define the input file pointer. */
char filename[80], string[80], tmpstr[80];
FILE *datafile;
/* Here are the character strings that appear in the plot legend. */
static char *legend[] =
{
"Aardvarks",
"Gnus",
"Llamas",
NULL}; /* Make sure last element is NULL */
/* ============== Read in data from input file. ============= */
/* Parse and process command line arguments */
(void) plparseopts(&argc, argv, PL_PARSE_FULL);
/* First prompt the user for the input data file name */
printf("Enter input data file name. ");
scanf("%s", filename);
/* and open the file. */
datafile = fopen(filename, "r");
if (datafile == NULL) /* error opening input file */
error("Error opening input file.");
/* Read in values of M and N */
k = fscanf(datafile, "%d %d", &M, &N);
if (k != 2) /* something's wrong */
error("Error while reading data file.");
/* Allocate memory for all the arrays. */
x = (PLFLT *) malloc(N * sizeof(PLFLT));
if (x == NULL)
error("Out of memory!");
y = (PLFLT **) malloc(M * sizeof(PLFLT *));
if (y == NULL)
error("Out of memory!");
for (i = 0; i < M; i++) {
y[i] = (PLFLT *) malloc(N * sizeof(PLFLT));
if (y[i] == NULL)
error("Out of memory!");
}
/* Now read in all the data. */
for (i = 0; i < N; i++) { /* N points */
k = fscanf(datafile, "%f", &x[i]);
if (k != 1)
error("Error while reading data file.");
for (j = 0; j < M; j++) { /* M lines */
k = fscanf(datafile, "%f", &y[j][i]);
if (k != 1)
error("Error while reading data file.");
}
}
/* ============== Graph the data. ============= */
/* Set graph to portrait orientation. (Default is landscape.) */
/* (Portrait is usually desired for inclusion in TeX documents.) */
plsori(1);
/* Initialize plplot */
plinit();
/*
* We must call pladv() to advance to the first (and only) subpage.
* You might want to use plenv() instead of the pladv(), plvpor(),
* plwind() sequence.
*/
pladv(0);
/*
* Set up the viewport. This is the window into which the data is
* plotted. The size of the window can be set with a call to
* plvpor(), which sets the size in terms of normalized subpage
* coordinates. I want to plot the lines on the upper half of the
* page and I want to leave room to the right of the figure for
* labelling the lines. We must also leave room for the title and
* labels with plvpor(). Normally a call to plvsta() can be used
* instead.
*/
plvpor(0.15, 0.70, 0.5, 0.9);
/*
* We now need to define the size of the window in user coordinates.
* To do this, we first need to determine the range of the data
* values.
*/
xmin = xmax = x[0];
ymin = ymax = y[0][0];
for (i = 0; i < N; i++) {
if (x[i] < xmin)
xmin = x[i];
if (x[i] > xmax)
xmax = x[i];
for (j = 0; j < M; j++) {
if (y[j][i] < ymin)
ymin = y[j][i];
if (y[j][i] > ymax)
ymax = y[j][i];
}
}
/*
* Now set the size of the window. Leave a small border around the
* data.
*/
xdiff = (xmax - xmin) / 20.;
ydiff = (ymax - ymin) / 20.;
plwind(xmin - xdiff, xmax + xdiff, ymin - ydiff, ymax + ydiff);
/*
* Call plbox() to draw the axes (see the PLPLOT manual for
* information about the option strings.)
*/
plbox("bcnst", 0.0, 0, "bcnstv", 0.0, 0);
/*
* Label the axes and title the graph. The string "#gm" plots the
* Greek letter mu, all the Greek letters are available, see the
* PLplot manual.
*/
pllab("Time (weeks)", "Height (#gmparsecs)", "Specimen Growth Rate");
/*
* Plot the data. plpoin() draws a symbol at each point. plline()
* connects all the points.
*/
for (i = 0; i < M; i++) {
plpoin(N, x, y[i], i + OFFSET);
plline(N, x, y[i]);
}
/*
* Draw legend to the right of the chart. Things get a little messy
* here. You may want to remove this section if you don't want a
* legend drawn. First find length of longest string.
*/
leglen = 0;
for (i = 0; i < M; i++) {
if (legend[i] == NULL)
break;
j = strlen(legend[i]);
if (j > leglen)
leglen = j;
}
/*
* Now build the string. The string consists of an element from the
* legend string array, padded with spaces, followed by one of the
* symbols used in plpoin above.
*/
for (i = 0; i < M; i++) {
if (legend[i] == NULL)
break;
strcpy(string, legend[i]);
j = strlen(string);
if (j < leglen) { /* pad string with spaces */
for (k = j; k < leglen; k++)
string[k] = ' ';
string[k] = '\0';
}
/* pad an extra space */
strcat(string, " ");
j = strlen(string);
/* insert the ASCII value of the symbol plotted with plpoin() */
string[j] = i + OFFSET;
string[j + 1] = '\0';
/* plot the string */
plmtex("rv", 1., 1. - (double) (i + 1) / (M + 1), 0., string);
}
/* Tell plplot we are done with this page. */
pladv(0); /* advance page */
/* Don't forget to call plend() to finish off! */
plend();
exit(0);
}
int
main( int argc, const char *argv[] )
{
char text[10];
int i, j, k, l;
PLFLT x, y;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
plfontld( 0 );
for ( l = 0; l < 20; l++ )
{
if ( l == 2 )
plfontld( 1 );
pladv( 0 );
// Set up viewport and window
plcol0( 2 );
plvpor( 0.15, 0.95, 0.1, 0.9 );
plwind( 0.0, 1.0, 0.0, 1.0 );
// Draw the grid using plbox
plbox( "bcg", 0.1, 0, "bcg", 0.1, 0 );
// Write the digits below the frame
plcol0( 15 );
for ( i = 0; i <= 9; i++ )
{
sprintf( text, "%d", i );
plmtex( "b", 1.5, ( 0.1 * i + 0.05 ), 0.5, text );
}
k = 0;
for ( i = 0; i <= 9; i++ )
{
// Write the digits to the left of the frame
sprintf( text, "%d", base[l] + 10 * i );
plmtex( "lv", 1.0, ( 0.95 - 0.1 * i ), 1.0, text );
for ( j = 0; j <= 9; j++ )
{
x = 0.1 * j + 0.05;
y = 0.95 - 0.1 * i;
// Display the symbols
plsym( 1, &x, &y, base[l] + k );
k = k + 1;
}
}
if ( l < 2 )
plmtex( "t", 1.5, 0.5, 0.5, "PLplot Example 7 - PLSYM symbols (compact)" );
else
plmtex( "t", 1.5, 0.5, 0.5, "PLplot Example 7 - PLSYM symbols (extended)" );
}
plend();
exit( 0 );
}
int main( int argc, const char *argv[] )
{
PLFLT *x, *y, **z,
xmin = 0., xmax = 1.0, xmid = 0.5 * ( xmax + xmin ), xrange = xmax - xmin,
ymin = 0., ymax = 1.0, ymid = 0.5 * ( ymax + ymin ), yrange = ymax - ymin,
zmin = 0., zmax = 1.0, zmid = 0.5 * ( zmax + zmin ), zrange = zmax - zmin,
ysmin = ymin + 0.1 * yrange,
ysmax = ymax - 0.1 * yrange,
ysrange = ysmax - ysmin,
dysrot = ysrange / (PLFLT) ( NROTATION - 1 ),
dysshear = ysrange / (PLFLT) ( NSHEAR - 1 ),
zsmin = zmin + 0.1 * zrange,
zsmax = zmax - 0.1 * zrange,
zsrange = zsmax - zsmin,
dzsrot = zsrange / (PLFLT) ( NROTATION - 1 ),
dzsshear = zsrange / (PLFLT) ( NSHEAR - 1 ),
ys, zs,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
omega, sin_omega, cos_omega, domega;
int i, j;
PLFLT radius, pitch, xpos, ypos, zpos;
// p1string must be exactly one character + the null termination
// character.
char p1string[] = "O";
const char *pstring = "The future of our civilization depends on software freedom.";
// Allocate and define the minimal x, y, and z to insure 3D box
x = (PLFLT *) calloc( XPTS, sizeof ( PLFLT ) );
y = (PLFLT *) calloc( YPTS, sizeof ( PLFLT ) );
plAlloc2dGrid( &z, XPTS, YPTS );
for ( i = 0; i < XPTS; i++ )
{
x[i] = xmin + (double) i * ( xmax - xmin ) / (double) ( XPTS - 1 );
}
for ( j = 0; j < YPTS; j++ )
y[j] = ymin + (double) j * ( ymax - ymin ) / (double) ( YPTS - 1 );
for ( i = 0; i < XPTS; i++ )
{
for ( j = 0; j < YPTS; j++ )
{
z[i][j] = 0.;
}
}
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
plinit();
// Page 1: Demonstrate inclination and shear capability pattern.
pladv( 0 );
plvpor( -0.15, 1.15, -0.05, 1.05 );
plwind( -1.2, 1.2, -0.8, 1.5 );
plw3d( 1.0, 1.0, 1.0, xmin, xmax, ymin, ymax, zmin, zmax,
20., 45. );
plcol0( 2 );
plbox3( "b", "", xmax - xmin, 0,
"b", "", ymax - ymin, 0,
"bcd", "", zmax - zmin, 0 );
// z = zmin.
plschr( 0., 1.0 );
for ( i = 0; i < NREVOLUTION; i++ )
{
omega = 2. * M_PI * ( (PLFLT) i / (PLFLT) NREVOLUTION );
sin_omega = sin( omega );
cos_omega = cos( omega );
x_inclination = 0.5 * xrange * cos_omega;
y_inclination = 0.5 * yrange * sin_omega;
z_inclination = 0.;
x_shear = -0.5 * xrange * sin_omega;
y_shear = 0.5 * yrange * cos_omega;
z_shear = 0.;
plptex3(
xmid, ymid, zmin,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.0, " revolution" );
}
// x = xmax.
plschr( 0., 1.0 );
for ( i = 0; i < NREVOLUTION; i++ )
{
omega = 2. * M_PI * ( (PLFLT) i / (PLFLT) NREVOLUTION );
sin_omega = sin( omega );
cos_omega = cos( omega );
x_inclination = 0.;
y_inclination = -0.5 * yrange * cos_omega;
z_inclination = 0.5 * zrange * sin_omega;
x_shear = 0.;
y_shear = 0.5 * yrange * sin_omega;
z_shear = 0.5 * zrange * cos_omega;
plptex3(
xmax, ymid, zmid,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.0, " revolution" );
}
// y = ymax.
plschr( 0., 1.0 );
for ( i = 0; i < NREVOLUTION; i++ )
{
omega = 2. * M_PI * ( (PLFLT) i / (PLFLT) NREVOLUTION );
sin_omega = sin( omega );
cos_omega = cos( omega );
x_inclination = 0.5 * xrange * cos_omega;
y_inclination = 0.;
z_inclination = 0.5 * zrange * sin_omega;
x_shear = -0.5 * xrange * sin_omega;
y_shear = 0.;
z_shear = 0.5 * zrange * cos_omega;
plptex3(
xmid, ymax, zmid,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.0, " revolution" );
}
// Draw minimal 3D grid to finish defining the 3D box.
plmesh( x, y, (const PLFLT * const *) z, XPTS, YPTS, DRAW_LINEXY );
// Page 2: Demonstrate rotation of string around its axis.
pladv( 0 );
plvpor( -0.15, 1.15, -0.05, 1.05 );
plwind( -1.2, 1.2, -0.8, 1.5 );
plw3d( 1.0, 1.0, 1.0, xmin, xmax, ymin, ymax, zmin, zmax,
20., 45. );
plcol0( 2 );
plbox3( "b", "", xmax - xmin, 0,
"b", "", ymax - ymin, 0,
"bcd", "", zmax - zmin, 0 );
// y = ymax.
plschr( 0., 1.0 );
x_inclination = 1.;
y_inclination = 0.;
z_inclination = 0.;
x_shear = 0.;
for ( i = 0; i < NROTATION; i++ )
{
omega = 2. * M_PI * ( (PLFLT) i / (PLFLT) NROTATION );
sin_omega = sin( omega );
cos_omega = cos( omega );
y_shear = 0.5 * yrange * sin_omega;
z_shear = 0.5 * zrange * cos_omega;
zs = zsmax - dzsrot * (PLFLT) i;
plptex3(
xmid, ymax, zs,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, "rotation for y = y#dmax#u" );
}
// x = xmax.
plschr( 0., 1.0 );
x_inclination = 0.;
y_inclination = -1.;
z_inclination = 0.;
y_shear = 0.;
for ( i = 0; i < NROTATION; i++ )
{
omega = 2. * M_PI * ( (PLFLT) i / (PLFLT) NROTATION );
sin_omega = sin( omega );
cos_omega = cos( omega );
x_shear = 0.5 * xrange * sin_omega;
z_shear = 0.5 * zrange * cos_omega;
zs = zsmax - dzsrot * (PLFLT) i;
plptex3(
xmax, ymid, zs,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, "rotation for x = x#dmax#u" );
}
// z = zmin.
plschr( 0., 1.0 );
x_inclination = 1.;
y_inclination = 0.;
z_inclination = 0.;
x_shear = 0.;
for ( i = 0; i < NROTATION; i++ )
{
omega = 2. * M_PI * ( (PLFLT) i / (PLFLT) NROTATION );
sin_omega = sin( omega );
cos_omega = cos( omega );
y_shear = 0.5 * yrange * cos_omega;
z_shear = 0.5 * zrange * sin_omega;
ys = ysmax - dysrot * (PLFLT) i;
plptex3(
xmid, ys, zmin,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, "rotation for z = z#dmin#u" );
}
// Draw minimal 3D grid to finish defining the 3D box.
plmesh( x, y, (const PLFLT * const *) z, XPTS, YPTS, DRAW_LINEXY );
// Page 3: Demonstrate shear of string along its axis.
// Work around xcairo and pngcairo (but not pscairo) problems for
// shear vector too close to axis of string. (N.B. no workaround
// would be domega = 0.)
domega = 0.05;
pladv( 0 );
plvpor( -0.15, 1.15, -0.05, 1.05 );
plwind( -1.2, 1.2, -0.8, 1.5 );
plw3d( 1.0, 1.0, 1.0, xmin, xmax, ymin, ymax, zmin, zmax,
20., 45. );
plcol0( 2 );
plbox3( "b", "", xmax - xmin, 0,
"b", "", ymax - ymin, 0,
"bcd", "", zmax - zmin, 0 );
// y = ymax.
plschr( 0., 1.0 );
x_inclination = 1.;
y_inclination = 0.;
z_inclination = 0.;
y_shear = 0.;
for ( i = 0; i < NSHEAR; i++ )
{
omega = domega + 2. * M_PI * ( (PLFLT) i / (PLFLT) NSHEAR );
sin_omega = sin( omega );
cos_omega = cos( omega );
x_shear = 0.5 * xrange * sin_omega;
z_shear = 0.5 * zrange * cos_omega;
zs = zsmax - dzsshear * (PLFLT) i;
plptex3(
xmid, ymax, zs,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, "shear for y = y#dmax#u" );
}
// x = xmax.
plschr( 0., 1.0 );
x_inclination = 0.;
y_inclination = -1.;
z_inclination = 0.;
x_shear = 0.;
for ( i = 0; i < NSHEAR; i++ )
{
omega = domega + 2. * M_PI * ( (PLFLT) i / (PLFLT) NSHEAR );
sin_omega = sin( omega );
cos_omega = cos( omega );
y_shear = -0.5 * yrange * sin_omega;
z_shear = 0.5 * zrange * cos_omega;
zs = zsmax - dzsshear * (PLFLT) i;
plptex3(
xmax, ymid, zs,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, "shear for x = x#dmax#u" );
}
// z = zmin.
plschr( 0., 1.0 );
x_inclination = 1.;
y_inclination = 0.;
z_inclination = 0.;
z_shear = 0.;
for ( i = 0; i < NSHEAR; i++ )
{
omega = domega + 2. * M_PI * ( (PLFLT) i / (PLFLT) NSHEAR );
sin_omega = sin( omega );
cos_omega = cos( omega );
y_shear = 0.5 * yrange * cos_omega;
x_shear = 0.5 * xrange * sin_omega;
ys = ysmax - dysshear * (PLFLT) i;
plptex3(
xmid, ys, zmin,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, "shear for z = z#dmin#u" );
}
// Draw minimal 3D grid to finish defining the 3D box.
plmesh( x, y, (const PLFLT * const *) z, XPTS, YPTS, DRAW_LINEXY );
// Page 4: Demonstrate drawing a string on a 3D path.
pladv( 0 );
plvpor( -0.15, 1.15, -0.05, 1.05 );
plwind( -1.2, 1.2, -0.8, 1.5 );
plw3d( 1.0, 1.0, 1.0, xmin, xmax, ymin, ymax, zmin, zmax,
40., -30. );
plcol0( 2 );
plbox3( "b", "", xmax - xmin, 0,
"b", "", ymax - ymin, 0,
"bcd", "", zmax - zmin, 0 );
plschr( 0., 1.2 );
// domega controls the spacing between the various characters of the
// string and also the maximum value of omega for the given number
// of characters in *pstring.
domega = 2. * M_PI / (double) strlen( pstring );
omega = 0.;
// 3D function is a helix of the given radius and pitch
radius = 0.5;
pitch = 1. / ( 2. * M_PI );
while ( *pstring )
{
sin_omega = sin( omega );
cos_omega = cos( omega );
xpos = xmid + radius * sin_omega;
ypos = ymid - radius * cos_omega;
zpos = zmin + pitch * omega;
// In general, the inclination is proportional to the derivative of
// the position wrt theta.
x_inclination = radius * cos_omega;;
y_inclination = radius * sin_omega;
z_inclination = pitch;
// The shear vector should be perpendicular to the 3D line with Z
// component maximized, but for low pitch a good approximation is
// a constant vector that is parallel to the Z axis.
x_shear = 0.;
y_shear = 0.;
z_shear = 1.;
*p1string = *pstring;
plptex3(
xpos, ypos, zpos,
x_inclination, y_inclination, z_inclination,
x_shear, y_shear, z_shear,
0.5, p1string );
pstring++;
omega += domega;
}
// Draw minimal 3D grid to finish defining the 3D box.
plmesh( x, y, (const PLFLT * const *) z, XPTS, YPTS, DRAW_LINEXY );
// Page 5: Demonstrate plmtex3 axis labelling capability
pladv( 0 );
plvpor( -0.15, 1.15, -0.05, 1.05 );
plwind( -1.2, 1.2, -0.8, 1.5 );
plw3d( 1.0, 1.0, 1.0, xmin, xmax, ymin, ymax, zmin, zmax,
20., 45. );
plcol0( 2 );
plbox3( "b", "", xmax - xmin, 0,
"b", "", ymax - ymin, 0,
"bcd", "", zmax - zmin, 0 );
plschr( 0., 1.0 );
plmtex3( "xp", 3.0, 0.5, 0.5, "Arbitrarily displaced" );
plmtex3( "xp", 4.5, 0.5, 0.5, "primary X-axis label" );
plmtex3( "xs", -2.5, 0.5, 0.5, "Arbitrarily displaced" );
plmtex3( "xs", -1.0, 0.5, 0.5, "secondary X-axis label" );
plmtex3( "yp", 3.0, 0.5, 0.5, "Arbitrarily displaced" );
plmtex3( "yp", 4.5, 0.5, 0.5, "primary Y-axis label" );
plmtex3( "ys", -2.5, 0.5, 0.5, "Arbitrarily displaced" );
plmtex3( "ys", -1.0, 0.5, 0.5, "secondary Y-axis label" );
plmtex3( "zp", 4.5, 0.5, 0.5, "Arbitrarily displaced" );
plmtex3( "zp", 3.0, 0.5, 0.5, "primary Z-axis label" );
plmtex3( "zs", -2.5, 0.5, 0.5, "Arbitrarily displaced" );
plmtex3( "zs", -1.0, 0.5, 0.5, "secondary Z-axis label" );
// Draw minimal 3D grid to finish defining the 3D box.
plmesh( x, y, (const PLFLT * const *) z, XPTS, YPTS, DRAW_LINEXY );
// Clean up.
free( (void *) x );
free( (void *) y );
plFree2dGrid( z, XPTS, YPTS );
plend();
exit( 0 );
}