int main(int argc, char * argv[])
{
gnuplot_ctrl * g = gnuplot_init();
char out_cmd[1024];
gnuplot_cmd(g, "set terminal png");
gnuplot_cmd(g, "set output \"sine.png\"");
gnuplot_plot_equation(g, "sin(x)", "Sine wave");
gnuplot_close(g);
return 0 ;
}
int main ( int argc, char *argv[] )
/******************************************************************************/
/*
Purpose:
MAIN is the main program for ANIM.
Modified:
24 June 2011
*/
{
double d[NPOINTS];
dpoint dp[NPOINTS];
gnuplot_ctrl *h1;
gnuplot_ctrl *h2;
gnuplot_ctrl *h3;
gnuplot_ctrl *h4;
int i;
int j;
double x[NPOINTS];
double y[NPOINTS];
printf ( "\n" );
printf ( "EXAMPLE:\n" );
printf ( " C++ version.\n" );
printf ( " Demonstrate how a running C++ program can produce plots\n" );
printf ( " through GNUPLOT, by invoking the GNUPLOT_I interface library.\n" );
/*
Initialize the gnuplot handle
*/
h1 = gnuplot_init();
if ( h1 == NULL )
{
printf ( "\n" );
printf ( "EXAMPLE - Fatal error!\n" );
printf ( " GNUPLOT is not available in your path.\n" );
exit ( 1 );
}
/*
Slopes
*/
gnuplot_setstyle(h1, "lines");
slow_print("*** plotting slopes\n");
slow_print("y = x\n");
gnuplot_plot_slope(h1, 1.0, 0.0, "unity slope");
sleep(SLEEP_LGTH);
slow_print("y = 2*x\n");
gnuplot_plot_slope(h1, 2.0, 0.0, "y=2x");
sleep(SLEEP_LGTH);
slow_print("y = -x\n");
gnuplot_plot_slope(h1, -1.0, 0.0, "y=-x");
sleep(SLEEP_LGTH);
/*
Equations
*/
gnuplot_resetplot(h1);
printf("\n\n");
slow_print("*** various equations\n");
slow_print("y = sin(x)\n");
gnuplot_plot_equation(h1, "sin(x)", "sine");
sleep(SLEEP_LGTH);
slow_print("y = log(x)\n");
gnuplot_plot_equation(h1, "log(x)", "logarithm");
sleep(SLEEP_LGTH);
slow_print("y = sin(x)*cos(2*x)\n");
gnuplot_plot_equation(h1, "sin(x)*cos(2*x)", "sine product");
sleep(SLEEP_LGTH);
/*
Styles
*/
gnuplot_resetplot(h1);
printf("\n\n");
slow_print("*** Showing plot style options:\n");
slow_print("sine(x) in points\n");
gnuplot_setstyle(h1, "points");
gnuplot_plot_equation(h1, "sin(x)", "sine");
sleep(SLEEP_LGTH);
slow_print("sine(x) in impulses\n");
gnuplot_setstyle(h1, "impulses");
gnuplot_plot_equation(h1, "sin(x)", "sine");
sleep(SLEEP_LGTH);
slow_print("sine(x) in steps\n");
gnuplot_setstyle(h1, "steps");
gnuplot_plot_equation(h1, "sin(x)", "sine");
sleep(SLEEP_LGTH);
/*
User defined 1d and 2d point sets
*/
gnuplot_resetplot(h1);
gnuplot_setstyle(h1, "impulses");
printf("\n\n");
slow_print("*** user defined lists of points\n");
slow_print("random doubles\n");
srand48 ( getpid ( ) );
for ( i = 0; i < NPOINTS; i++ )
{
d[i] = drand48();
}
gnuplot_plot1d_var1(h1, d, NPOINTS, "random doubles");
sleep(SLEEP_LGTH);
gnuplot_resetplot(h1);
gnuplot_setstyle(h1, "points");
slow_print("random points\n");
for ( i = 0; i < NPOINTS; i++ )
{
dp[i].x = drand48();
dp[i].y = drand48();
}
gnuplot_plot1d_var2(h1, dp, NPOINTS, "random points");
sleep(SLEEP_LGTH);
gnuplot_resetplot(h1);
gnuplot_setstyle(h1, "points");
slow_print("cosine points with var2v\n");
for ( j = 0; j < NPOINTS; j++ )
{
x[j] = ( double ) j / 10.0;
y[j] = cos ( x[j] );
}
gnuplot_plot1d_var2v(h1, x, y, NPOINTS, "cosine points");
sleep(SLEEP_LGTH);
/*
Multiple output screens
*/
printf("\n\n");
slow_print("*** multiple output windows\n");
gnuplot_resetplot(h1);
gnuplot_setstyle(h1, "lines");
h2 = gnuplot_init();
gnuplot_setstyle(h2, "lines");
h3 = gnuplot_init();
gnuplot_setstyle(h3, "lines");
h4 = gnuplot_init();
gnuplot_setstyle(h4, "lines");
slow_print("window 1: sin(x)\n");
gnuplot_plot_equation(h1, "sin(x)", "sin(x)");
sleep(SLEEP_LGTH);
slow_print("window 2: cos(x)\n");
gnuplot_plot_equation(h2, "cos(x)", "cos(x)");
sleep(SLEEP_LGTH);
slow_print("window 3: asin(x)\n");
gnuplot_plot_equation(h3, "asin(x)", "arcsin(x)");
sleep(SLEEP_LGTH);
slow_print("window 4: acos(x)\n");
gnuplot_plot_equation(h4, "acos(x)", "arccos(x)");
sleep(SLEEP_LGTH);
/*
Close gnuplot handles.
*/
printf ( "\n\n" );
slow_print ( "*** end of gnuplot example\n" );
gnuplot_close ( h1 );
gnuplot_close ( h2 );
gnuplot_close ( h3 );
gnuplot_close ( h4 );
/*
Terminate.
*/
printf ( "\n" );
printf ( "EXAMPLE:\n" );
printf ( " Normal end of execution.\n" );
return 0;
}
int main(int argc, char **argv)
{
gnuplot_ctrl *gam;
char kcode;
int exit_flag = 1;
gam = gnuplot_init();
gnuplot_setstyle(gam, "lines");
plot_bezier(gam);
// gnuplot_plot_slope(gam, 2.0, 0.0, "y=2x");
while(1){
switch(getkey()){
case 'x':
exit_flag = 0;
break;
case 'a':
gnuplot_resetplot(gam);
gnuplot_plot_equation(gam, "log(x)", "logarithm") ;
break;
case '=':
gnuplot_resetplot(gam);
bez_adj(gam, target, COARSE, PLUS);
plot_bezier(gam);
break;
case '-':
gnuplot_resetplot(gam);
bez_adj(gam, target, COARSE, MINUS);
plot_bezier(gam);
break;
case '+':
gnuplot_resetplot(gam);
bez_adj(gam, target, FINE, PLUS);
plot_bezier(gam);
break;
case '_':
gnuplot_resetplot(gam);
bez_adj(gam, target, FINE, MINUS);
plot_bezier(gam);
break;
case '1':
target = YONE;
printf("\nset YONE as adjust target: %f\n", yone);
break;
case '2':
target = YTWO;
printf("\nset YTWO as adjust target: %f\n", ytwo);
break;
case '3':
target = XONE;
printf("\nset XONE as adjust target: %f\n", xone);
break;
case '4':
target = XTWO;
printf("\nset XTWO as adjust target: %f\n", xtwo);
break;
default:
break;
}
if (!exit_flag)
break;
usleep(500*1000);
}
print_curve();
gnuplot_close(gam);
return 0;
}
int main(int argc, char *argv[])
{
gnuplot_ctrl * h1,
* h2,
* h3,
* h4 ;
double x[NPOINTS] ;
double y[NPOINTS] ;
int i ;
/*
* Initialize the gnuplot handle
*/
printf("*** example of gnuplot control through C ***\n") ;
h1 = gnuplot_init() ;
/*
* Slopes
*/
gnuplot_setstyle(h1, "lines") ;
printf("*** plotting slopes\n") ;
printf("y = x\n") ;
gnuplot_plot_slope(h1, 1.0, 0.0, "unity slope") ;
sleep(SLEEP_LGTH) ;
printf("y = 2*x\n") ;
gnuplot_plot_slope(h1, 2.0, 0.0, "y=2x") ;
sleep(SLEEP_LGTH) ;
printf("y = -x\n") ;
gnuplot_plot_slope(h1, -1.0, 0.0, "y=-x") ;
sleep(SLEEP_LGTH) ;
/*
* Equations
*/
gnuplot_resetplot(h1) ;
printf("\n\n") ;
printf("*** various equations\n") ;
printf("y = sin(x)\n") ;
gnuplot_plot_equation(h1, "sin(x)", "sine") ;
sleep(SLEEP_LGTH) ;
printf("y = log(x)\n") ;
gnuplot_plot_equation(h1, "log(x)", "logarithm") ;
sleep(SLEEP_LGTH) ;
printf("y = sin(x)*cos(2*x)\n") ;
gnuplot_plot_equation(h1, "sin(x)*cos(2*x)", "sine product") ;
sleep(SLEEP_LGTH) ;
/*
* Styles
*/
gnuplot_resetplot(h1) ;
printf("\n\n") ;
printf("*** showing styles\n") ;
printf("sine in points\n") ;
gnuplot_setstyle(h1, "points") ;
gnuplot_plot_equation(h1, "sin(x)", "sine") ;
sleep(SLEEP_LGTH) ;
printf("sine in impulses\n") ;
gnuplot_setstyle(h1, "impulses") ;
gnuplot_plot_equation(h1, "sin(x)", "sine") ;
sleep(SLEEP_LGTH) ;
printf("sine in steps\n") ;
gnuplot_setstyle(h1, "steps") ;
gnuplot_plot_equation(h1, "sin(x)", "sine") ;
sleep(SLEEP_LGTH) ;
/*
* User defined 1d and 2d point sets
*/
gnuplot_resetplot(h1) ;
gnuplot_setstyle(h1, "impulses") ;
printf("\n\n") ;
printf("*** user-defined lists of doubles\n") ;
for (i=0 ; i<NPOINTS ; i++) {
x[i] = (double)i*i ;
}
gnuplot_plot_x(h1, x, NPOINTS, "user-defined doubles") ;
sleep(SLEEP_LGTH) ;
printf("*** user-defined lists of points\n");
for (i=0 ; i<NPOINTS ; i++) {
x[i] = (double)i ;
y[i] = (double)i * (double)i ;
}
gnuplot_resetplot(h1) ;
gnuplot_setstyle(h1, "points") ;
gnuplot_plot_xy(h1, x, y, NPOINTS, "user-defined points") ;
sleep(SLEEP_LGTH) ;
/*
* Multiple output screens
*/
printf("\n\n") ;
printf("*** multiple output windows\n") ;
gnuplot_resetplot(h1) ;
gnuplot_setstyle(h1, "lines") ;
h2 = gnuplot_init() ;
gnuplot_setstyle(h2, "lines") ;
h3 = gnuplot_init() ;
gnuplot_setstyle(h3, "lines") ;
h4 = gnuplot_init() ;
gnuplot_setstyle(h4, "lines") ;
printf("window 1: sin(x)\n") ;
gnuplot_plot_equation(h1, "sin(x)", "sin(x)") ;
sleep(SLEEP_LGTH) ;
printf("window 2: x*sin(x)\n") ;
gnuplot_plot_equation(h2, "x*sin(x)", "x*sin(x)") ;
sleep(SLEEP_LGTH) ;
printf("window 3: log(x)/x\n") ;
gnuplot_plot_equation(h3, "log(x)/x", "log(x)/x");
sleep(SLEEP_LGTH) ;
printf("window 4: sin(x)/x\n") ;
gnuplot_plot_equation(h4, "sin(x)/x", "sin(x)/x") ;
sleep(SLEEP_LGTH) ;
/*
* close gnuplot handles
*/
printf("\n\n") ;
printf("*** end of gnuplot example\n") ;
gnuplot_close(h1) ;
gnuplot_close(h2) ;
gnuplot_close(h3) ;
gnuplot_close(h4) ;
return 0 ;
}
