/* compare 2 maps for their location attributes
* Rcompare compares 2 maps for all location attributes:
*
* projection,
*
* xUL, yUL, angle,
*
* cell size and
*
* number of rows and columns
*
* returns 0 if one of these attributes differ or in case of an error, 1
* if they are all equal.
*
* Merrno
* NOT_RASTER
*/
int Rcompare(
const MAP *m1, /* map handle 1 */
const MAP *m2) /* map handle 2 */
{
CHECKHANDLE_GOTO(m1, error);
/* check if mapType is T_RASTER */
if ((m1->main.mapType != T_RASTER)
|| (m2->main.mapType != T_RASTER))
{
M_ERROR(NOT_RASTER);
goto error;
}
if (
MgetProjection(m1) == MgetProjection(m2) &&
m1->raster.xUL == m2->raster.xUL &&
m1->raster.yUL == m2->raster.yUL &&
m1->raster.cellSize == m2->raster.cellSize &&
m1->raster.cellSizeDupl == m2->raster.cellSizeDupl &&
m1->raster.angle == m2->raster.angle &&
m1->raster.nrRows == m2->raster.nrRows &&
m1->raster.nrCols == m2->raster.nrCols
) return(1);
error:
return(0);
}
static int ReadAttr(
ATTRIBUTES *a,
MAP *m,
BOOL readOnly) /* are the attribute only used for teh PRINT op
*/
{
DefaultAttr(a);
if (RuseAs(m, CR_REAL8))
goto failure;
RgetMinVal(m, &(a->minVal));
RgetMaxVal(m, &(a->maxVal));
a->projection = MgetProjection(m);
a->xUL = RgetXUL(m);
a->yUL = RgetYUL(m);
a->nrRows = RgetNrRows(m);
a->nrCols = RgetNrCols(m);
a->cellSize = RgetCellSize(m);
a->version = MgetVersion(m);
a->gisFileId = MgetGisFileId(m);
a->byteOrder = m->main.byteOrder;
a->attrTable = m->main.attrTable;
if (Merrno)
goto failure;
if (a->version == 2 || readOnly)
{ /* otherwise use defaults */
a->valueScale = RgetValueScale(m);
a->cellRepr = RgetCellRepr(m);
a->angle = RgetAngle(m);
if (a->angle < 0)
a->angle = -Rad2Deg(-a->angle);
else
a->angle = Rad2Deg(a->angle);
}
return 0;
failure:
return 1;
}
/* Checks whether all input maps have the same attributes as given.
* Returns 1 in case of a difference, 0 otherwise.
*/
static int CheckInputMaps(
MAP **in, /* input maps to check */
size_t nrMaps, /* number of input maps */
CSF_PT projection, /* projection to satisfy */
REAL8 angle, /* angle to satisfy */
REAL8 cellSize) /* cell size to satisfy */
{
size_t i;
/* Check all input maps */
for(i = 0; i < nrMaps; i++)
{
MAP *X = in[i];
if(angle != RgetAngle(X))
{
ErrorNested(
"all input map should have the same angle.");
return 1;
}
if(projection != MgetProjection(X))
{
ErrorNested(
"all input map should have the same projection.");
return 1;
}
if(cellSize != RgetCellSize(X))
{
ErrorNested(
"all input map should have the same cell size.");
return 1;
}
}
return 0; /* all maps have same attributes */
}
/* Function for resampling N input maps into 1 output map.
* Assumes a map "clone.map" and N "input.map"s present. Checks on
* options for percentage and maximum value.
* Determines type and characteristics of output map.
* Returns nothing, exits with 1 in case of error.
*/
int main(int argc, /* number of arguments */
char *argv[]) /* list of arguments */
{
MAP *clone, *out, *tmp, **in;
char *outputName, *cloneName;
int c, borderval;
size_t nrMaps,i;
REAL8 X0, Y0, cellSize, angleIn, angleOut;
size_t nrRows, nrCols;
CSF_PT projection;
CSF_CR cellRepr;
CSF_VS valueScale;
double percent = 0, errFactor = 2.5, resampleN = 0.0;
BOOL aligned = TRUE;
BOOL keepInputMinMax = FALSE;
REAL8 minAllInput=0, maxAllInput=0;
BOOL onlyReal4 = TRUE, contract = FALSE;
BOOL onlyUint1 = TRUE;
if(InstallArgs(argc, argv,"axmp$r$c#b#e$RBCk", "resample", __DATE__))
exit(1);
while((c = GetOpt()) != 0)
{
switch(c)
{
case 'b': opB = TRUE;
borderval = *((int *) OptArg);
break;
case 'B': opB = TRUE;
borderval = 0;
break;
case 'C': opMV = TRUE;
borderval = 0;
break;
case 'c': opMV = TRUE;
borderval = *((int *) OptArg);
break;
case 'a':contract = TRUE;
break;
case 'x':contract = FALSE;
break;
case 'm':opMax = 1;
break;
case 'p':opPer = 1;
percent = *((double*) OptArg);
if(percent < 0 || 100 < percent)
{
Error("illegal percentage");
exit(1);
}
break;
case 'R':opR = 1;
resampleN = 1;
break;
case 'r':opR = 1;
resampleN = *((double*) OptArg);
break;
case 'e':optionAcc = 1;
errFactor = *((double*) OptArg);
break;
case 'k': keepInputMinMax = TRUE;
break;
}
}
argv = ArgArguments(&argc);
if (AppArgCountCheck(argc,3,-1,USAGE))
exit(1);
outputName = argv[argc-1];
nrMaps = argc-2;
/* Read the desired specifics out of the clone map
* or use first input as clone map
*/
cloneName = NO_CLONE_NEEDED ? argv[1] : NULL;
if ( (clone = AppOpenClone(&cloneName,cloneName)) == NULL)
exit(1);
/* Determine the valueScale out of 1st input map */
tmp = Mopen(argv[1], M_READ);
if(tmp == NULL)
MperrorExit(argv[1], 1);
/* all input maps have same value scale */
valueScale = RgetValueScale(tmp);
if(valueScale == VS_LDD && !opMV)
{
Error("can not do this type of resampling on map '%s' with type ldd", argv[1]);
exit(1);
}
/* adjust old ones */
if(valueScale == VS_CLASSIFIED)
valueScale = VS_ORDINAL;
if(valueScale == VS_CONTINUOUS)
valueScale = VS_SCALAR;
/* get location attributes of clone or of 1st input map */
projection = MgetProjection(clone);
nrRows = RgetNrRows(clone);
nrCols = RgetNrCols(clone);
X0 = RgetX0(clone);
Y0 = RgetY0(clone);
cellRepr = RgetCellRepr(clone);
angleOut = RgetAngle(clone);
/* resample option -> cell size(inputmap) * factor
* Number of rows and columns are divided by resample
* factor.
*/
if(opR == 1)
{
/* setting for unit */
if(!appUnitTrue)
{
cellSize = resampleN;
resampleN /= (double) RgetCellSize(tmp);
}
else
cellSize = RgetCellSize(tmp) * resampleN;
if(contract)
{
nrRows = floor((double) nrRows /
(double) resampleN);
nrCols = floor((double) nrCols /
(double) resampleN);
/* Prevent an illegal map */
if(nrRows == 0)
nrRows = 1;
if(nrCols == 0)
nrCols = 1;
}
else
{
nrRows = ceil((double) nrRows /
(double) resampleN);
nrCols = ceil((double) nrCols /
(double) resampleN);
}
}
else
cellSize = RgetCellSize(clone);
/* Allocate memory for the input map pointers */
in = (MAP **)ChkMalloc(sizeof(MAP *) * nrMaps);
if(in == NULL)
{
AppEnd();
exit(1);
}
/* Read all input maps with desired cell representation */
for(i = 0; i < nrMaps; i++)
{
REAL8 tmpMin, tmpMax;
tmp = Mopen(argv[1 + i], M_READ);
angleIn = RgetAngle(tmp);
if(angleIn != 0)
aligned = FALSE;
if(tmp == NULL)
MperrorExit(argv[1 + i], 1);
if(!RvalueScaleIs(tmp, valueScale))
{
Error("%s has illegal data type: '%s'\n",
argv[1 + i], RstrValueScale(valueScale));
exit(1);
}
in[i] = tmp;
/* Determine which cell representation should be used */
onlyReal4 = RgetCellRepr(in[i]) == CR_REAL4;
onlyUint1 = RgetCellRepr(in[i]) == CR_UINT1;
RuseAs(in[i], CR_REAL8);
RgetMinVal(tmp, &tmpMin);
RgetMaxVal(tmp, &tmpMax);
if (i==0)
{minAllInput = tmpMin; maxAllInput = tmpMax; }
minAllInput = MIN(minAllInput,tmpMin);
maxAllInput = MAX(maxAllInput,tmpMax);
if(AppIsClassified(valueScale))
RuseAs(in[i], CR_INT4);
else
RuseAs(in[i], CR_REAL8);
}
if(opB == 1 || opMV == 1)
{
if(CheckInputMaps(in, nrMaps, projection, angleIn, cellSize))
{
Error("");
FreeMaps(in, nrMaps);
exit(1);
}
if(opB == 1)
{
if(SmallestFittingRectangle(&X0, &Y0, &nrRows,
&nrCols, in, borderval, nrMaps,
cellSize, angleIn, projection, contract))
{
FreeMaps(in, nrMaps);
AppEnd();
exit(1);
}
}
else
{
if(SmallestNonMVRect(&X0, &Y0, &nrRows, &nrCols, in,
borderval, nrMaps, valueScale, cellSize,
angleIn, projection, contract))
{
FreeMaps(in, nrMaps);
AppEnd();
exit(1);
}
}
}
/* Create output map with suitable cell representation */
/* NOTE ! Create map with smallest representation possible */
out = Rcreate(outputName, nrRows, nrCols,
AppIsClassified(valueScale) ?
(onlyUint1 ? CR_UINT1 : CR_INT4) :
(onlyReal4 ? CR_REAL4 : CR_REAL8),
valueScale, projection, X0, Y0,
angleOut, cellSize);
if(out == NULL)
{
FreeMaps(in, nrMaps);
Error("can not create output map '%s': %s",
argv[1], MstrError());
exit(1);
}
RuseAs(out, AppIsClassified(valueScale) ? CR_INT4 : CR_REAL8);
if(angleOut != 0)
aligned = FALSE;
/* determine raster size according wanted accuracy */
if(opB != 1 && opMV != 1)
{
if(DetRasterSize(out, in, nrMaps, errFactor))
{
Error("Illegal cell size\n");
exit(1);
}
}
else
rasterSize = 1;
if(nrMaps > 1 && percent > 0)
AppProgress("rasterSize: %d\n", rasterSize);
else
AppProgress("No raster used\n");
/* Call function */
if(AppIsClassified(valueScale))
{ /* Call resample function for classified maps */
if(SampleClass(out, in, percent, nrMaps, nrRows, nrCols,
aligned, angleOut))
{
EndResample(in, nrMaps, out);
exit(1); /* Memory allocation failed */
}
}
else
{ /* Call resample function for continuous maps */
if(SampleCont(out, in, percent, nrMaps, nrRows, nrCols,
aligned, angleOut))
{
EndResample(in, nrMaps, out);
exit(1); /* Memory allocation failed */
}
}
/* End of call */
if (keepInputMinMax) {
RuseAs(out, CR_REAL8);
RputMinVal(out, &minAllInput);
RputMaxVal(out, &maxAllInput);
}
EndResample(in, nrMaps, out);
exit(0); /* Successful exit */
return 0; /* Never reached */
} /* main */
/* Function to determine the raster size.
* If all input maps have the same angle as the output map and
* all distances and cell sizes are a multiple of the smallest
* cell size than the rastersize may be less than the INITSIZE.
* Returns 1 in case of error, 0 otherwise.
*/
static int DetRasterSize(
const MAP *out, /* write-only output map */
MAP **in, /* read-only input maps */
size_t nrMaps, /* number of input maps */
double errFactor) /* maximum error */
{
REAL8 minCellSize = REAL8_MAX;
size_t i;
CSF_PT projIn, projOut;
REAL8 cellSize, n, X0, Y0, Xout, Yout, angleIn, angleOut;
rasterSize = INITSIZE;
/* If option -a set -> rastersize depends on wanted accuracy */
if(optionAcc)
{
if(errFactor != 0)
rasterSize = ceil ((double) 50 / errFactor);
else
rasterSize = MAXSIZE;
}
/* Determine the output angle */
angleOut = RgetAngle(out);
projOut = MgetProjection(out);
/* Determine the minimum cell size */
for(i = 0; i < nrMaps; i++)
{
MAP *X = in[i];
angleIn = RgetAngle(X);
projIn = MgetProjection(X);
if(angleIn != angleOut || projIn != projOut)
return 0; /* different angles */
cellSize = RgetCellSize(X);
if(cellSize <= 0) /* illegal cell size */
return 1;
if(cellSize < minCellSize)
minCellSize = cellSize; /* minimum cell size */
}
cellSize = RgetCellSize(out);
if(cellSize <= 0)
return 1; /* illegal cell size */
if(cellSize < minCellSize)
minCellSize = cellSize; /* minimum cell size */
/* Determine whether all cell size are N * min(cellsize) */
for(i = 0; i < nrMaps; i++)
{
MAP *X = in[i];
cellSize = RgetCellSize(X);
n = (REAL8) cellSize / minCellSize;
if((REAL8)(int) n < n - EPSILON ||
n + EPSILON < (REAL8)(int) n)
return 0; /* RASTERSIZE NOT MODIFIED */
}
cellSize = RgetCellSize(out);
n = (REAL8) cellSize / minCellSize;
if((REAL8)(int) n < n - EPSILON ||
n + EPSILON < (REAL8)(int) n)
return 0;
/* Determine whether the distances are N * min(cell size) */
Xout = RgetX0(out);
Yout = RgetY0(out);
for(i = 0; i < nrMaps; i++)
{
X0 = RgetX0(in[i]);
Y0 = RgetY0(in[i]);
n = (X0 - Xout) / minCellSize;
if((REAL8)(int) n < n - EPSILON ||
n + EPSILON < (REAL8)(int) n)
return 0;
n = (Y0 - Yout) / minCellSize;
if((REAL8)(int) n < n - EPSILON ||
n + EPSILON < (REAL8)(int) n)
return 0;
}
cellSize = RgetCellSize(out);
rasterSize = (int) (cellSize / minCellSize);
return 0;
}
