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/*
* rdm_vector.c - routines to read vector data from an MTV-format.
*
* The data is assumed to be sandwiched between $DATA=xxx lines
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "CNplot.h"
int CNmtv_read_vector_data();
static void read_vector_options();
static void vector_itemno_err();
static CNdouble def_mval = {0.0, 0};
/*
* Read data in vector format
* Return an EOF if such is found during the read; otherwise return 0
*/
int CNmtv_read_vector_data(Dptr,
dataID,dataname,filename,fp,lineno,header,verbose)
CNdatasetptr *Dptr; /* The dataset pointer */
int *dataID; /* Data ID */
char *dataname; /* Dataset name */
char *filename; /* The name of the file/pipe source */
FILE *fp; /* The file/pipe source */
int *lineno; /* Current line number */
char *header; /* Header string */
int verbose; /* Verbosity Flag */
{
CNvecboxptr vector_box = NULL;
CNvecptr vectorhead = NULL, vectortail = NULL;
CNannotptr annothead=NULL, annottail=NULL;
CNcontstepptr cstephead=NULL, csteptail=NULL;
CNviewptr view_pr;
CNcurve_property cv_property;
CNdataset_property ds_property;
CNplotset_property pt_property;
char line[BUFSIZ];
int header_found = CN_FALSE;
int invalid_grid = CN_FALSE;
int len, ierr=0, vectorID=0, nvectors, npts, i;
double xmin, xmax, ymin, ymax, zmin, zmax;
double *xarr=NULL, *yarr=NULL, *zarr=NULL;
double *vxarr=NULL, *vyarr=NULL, *vzarr=NULL;
double x,y,z,vx,vy,vz;
double vlen_max, vlen_min;
double vscale, vlogscale;
CNdouble rnpts;
int binary;
/* Print info */
(void) fprintf(stdout,"\n Reading VECTOR data...(line %d)\n",*lineno);
/* Initialize */
*Dptr = NULL;
xmin = CN_LARGE;
xmax = -CN_LARGE;
ymin = CN_LARGE;
ymax = -CN_LARGE;
zmin = CN_LARGE;
zmax = -CN_LARGE;
rnpts = def_mval;
/* Set the view parameters */
view_pr = CNcreate_view();
/* Set the properties of the plotset */
CNset_default_plotset_property(&pt_property);
/* Set the properties of the dataset */
CNset_default_dataset_property(&ds_property);
/* Set the properties of the curve */
CNset_default_curve_property(&cv_property);
/* Keep on reading until a "$" is encountered */
while (!header_found && CNgetucline(fp, line, lineno, BUFSIZ) != EOF) {
/*EMPTY*/
if (((len=strlen(line)) == 0) || (len==1 && line[0]=='\n')) {
/* Blank line - ignore */
;
/*EMPTY*/
} else if (line[0] == '#') {
/* Comment */
;
} else if (line[0] == '$') {
/* Header */
line[0] = ' ';
(void) strcpy(header, line);
header_found = CN_TRUE;
} else if (line[0] == '@') {
/* Annotation */
line[0] = ' ';
CNparse_annotation_line(line, BUFSIZ,
&annothead, &annottail,
verbose);
} else if (line[0] == '%') {
/* Option */
line[0] = ' ';
read_vector_options("VECTOR ",line,
view_pr,&pt_property,&ds_property,&cv_property,
&rnpts,&binary,verbose);
if ((ds_property.contours) && ((ds_property.flag1 & CNctrlevel)!=0))
CNset_contstep_levels(&cstephead, &csteptail, &ds_property);
/* Binary format - data follows on next line */
if (binary) {
/* Set the number of grid points */
invalid_grid = CNmtv_check_points(&rnpts,&npts,"npts",
"VECTOR ",*lineno);
if (!invalid_grid) {
/* Read the data */
xarr = CNmtv_read_binary_dbl_array(fp,npts);
yarr = CNmtv_read_binary_dbl_array(fp,npts);
zarr = CNmtv_read_binary_dbl_array(fp,npts);
vxarr = CNmtv_read_binary_dbl_array(fp,npts);
vyarr = CNmtv_read_binary_dbl_array(fp,npts);
vzarr = CNmtv_read_binary_dbl_array(fp,npts);
rnpts= def_mval;
if (xarr == NULL || yarr == NULL || zarr == NULL ||
vxarr== NULL || vyarr== NULL || vzarr== NULL) {
CNfree_1D_double_array(xarr);
CNfree_1D_double_array(yarr);
CNfree_1D_double_array(zarr);
CNfree_1D_double_array(vxarr);
CNfree_1D_double_array(vyarr);
CNfree_1D_double_array(vzarr);
} else {
/* Copy the data into the vector list */
for (i=0; i<npts; i++) {
x = xarr[i];
y = yarr[i];
z = zarr[i];
vx = vxarr[i];
vy = vyarr[i];
vz = vzarr[i];
/* Get min and max */
if (x < xmin) xmin = x;
if (x > xmax) xmax = x;
if (y < ymin) ymin = y;
if (y > ymax) ymax = y;
if (z < zmin) zmin = z;
if (z > zmax) zmax = z;
/* Create a vector */
(void) CNinsert_vector(&vectorhead, &vectortail,
x,y,z,vx,vy,vz,vectorID++);
}
/* Free the arrays */
if (xarr != NULL) CNfree_1D_double_array(xarr);
if (yarr != NULL) CNfree_1D_double_array(yarr);
if (zarr != NULL) CNfree_1D_double_array(zarr);
if (vxarr != NULL) CNfree_1D_double_array(vxarr);
if (vyarr != NULL) CNfree_1D_double_array(vyarr);
if (vzarr != NULL) CNfree_1D_double_array(vzarr);
}
}
}
} else if (!invalid_grid) {
/* Must be ascii data */
if (sscanf(line,"%lf %lf %lf %lf %lf %lf",&x,&y,&z,&vx,&vy,&vz) != 6){
/* Read 6 numbers from the line */
vector_itemno_err("VECTOR ",(*lineno),6,ierr++);
} else {
/* Get min and max */
if (x < xmin) xmin = x;
if (x > xmax) xmax = x;
if (y < ymin) ymin = y;
if (y > ymax) ymax = y;
if (z < zmin) zmin = z;
if (z > zmax) zmax = z;
/* Store the vector */
(void) CNinsert_vector(&vectorhead, &vectortail,
x,y,z,vx,vy,vz,vectorID++);
}
}
}
/* Go thru the vectors and report the findings */
nvectors = CNcount_vectors(vectorhead, vectortail);
if (verbose) (void) fprintf(stdout," Read %d vector(s)\n",nvectors);
/* Put the vectors inside a vector box */
if (vectorhead != NULL) {
/* Get the max/min length of the vectors */
vlen_max = CNmax_vector(vectorhead, vectortail);
vlen_min = CNmin_vector(vectorhead, vectortail);
if (verbose) (void) fprintf(stdout," Max magnitude = %g\n",vlen_max);
if (verbose) (void) fprintf(stdout," Min magnitude = %g\n",vlen_min);
/* Figure out the best scale factor */
vscale = CNdefault_vector_scale(vectorhead, vectortail,
xmin, xmax,
ymin, ymax,
zmin, zmax,
vlen_max);
vlogscale = CNdefault_vector_scale(vectorhead, vectortail,
xmin, xmax,
ymin, ymax,
zmin, zmax,
CNveclog10(vlen_max));
/* Create a vector-box */
vector_box = CNmake_vectorbox(vectorhead, vectortail,
vlen_min, vlen_max, 0);
if (vector_box == NULL) {
(void) fprintf(stderr,"Error! Couldn't create a vector box!\n");
CNdelete_vector_list(&vectorhead, &vectortail);
}
}
/* Now create the dataset */
if (vector_box != NULL) {
/*
* If the plot-boundary has been set in the options then
* use that as the true plot boundary
*/
if ((pt_property.flag1 & CNvxmin) != 0) xmin = pt_property.vxmin;
if ((pt_property.flag1 & CNvymin) != 0) ymin = pt_property.vymin;
if ((pt_property.flag1 & CNvzmin) != 0) zmin = pt_property.vzmin;
if ((pt_property.flag1 & CNvxmax) != 0) xmax = pt_property.vxmax;
if ((pt_property.flag1 & CNvymax) != 0) ymax = pt_property.vymax;
if ((pt_property.flag1 & CNvzmax) != 0) zmax = pt_property.vzmax;
/* Store the curves in a dataset */
*Dptr = CNmake_dataset(filename,dataname,CN_VECTOR,
xmin,xmax,ymin,ymax,zmin,zmax,
xmin,xmax,ymin,ymax,zmin,zmax,*dataID);
if ((*Dptr) != NULL) (*dataID)++;
if ((*Dptr) != NULL) {
(*Dptr)->vecbox = vector_box;
(*Dptr)->annothead = annothead;
(*Dptr)->annottail = annottail;
/* Set the scale-factor */
(*Dptr)->data_pr.vscale = vscale;
(*Dptr)->data_pr.vlogscale = vlogscale;
/* Apply the view options to the dataset */
CNset_view_property((*Dptr)->view_pr,view_pr);
/* Apply the plotset options to the dataset */
CNset_plotset_property(&((*Dptr)->plot_pr),&pt_property);
/* Apply the dataset options to the dataset */
CNset_dataset_property(&((*Dptr)->data_pr),&ds_property);
/* Apply the contsteps */
if (cstephead != NULL) {
(*Dptr)->cstephead = cstephead;
(*Dptr)->csteptail = csteptail;
}
/* Apply the linecolor/thickness from the curve property */
if ((cv_property.flag & CNlinetype ) != 0)
(*Dptr)->vecbox->linetype = cv_property.linetype ;
if ((cv_property.flag & CNlinecolor) != 0)
(*Dptr)->vecbox->linecolor = cv_property.linecolor;
if ((cv_property.flag & CNlinewidth) != 0)
(*Dptr)->vecbox->linewidth = cv_property.linewidth;
if ((cv_property.flag & CNmarktype ) != 0)
(*Dptr)->vecbox->marktype = cv_property.marktype ;
if ((cv_property.flag & CNmarkcolor) != 0)
(*Dptr)->vecbox->markcolor = cv_property.markcolor;
/* Print out the dataset */
if (verbose) CNprint_dataset(*Dptr, 0);
#ifdef DEBUG
/* Print out the vectors */
CNprint_vector_list((*Dptr)->vectorhead, (*Dptr)->vectortail, 1);
#endif
}
}
/* Failed */
if ((*Dptr)==NULL) {
if (vector_box) CNdelete_vectorbox(vector_box);
CNdelete_contstep_list(&cstephead, &csteptail);
CNdelete_annotation_list(&annothead, &annottail);
}
/* Reset the property structures */
CNdelete_plotset_property_fields(&pt_property);
CNdelete_dataset_property_fields(&ds_property);
CNdelete_curve_property_fields(&cv_property);
/* Free the view structure */
CNdelete_view(view_pr);
/* Print out info */
if ((*Dptr) != NULL) {
(void) fprintf(stdout," VECTOR : Read %d vectors\n",nvectors);
(void) fprintf(stdout," : Vector scale factor = %g\n",
(*Dptr)->data_pr.vscale);
} else
(void) fprintf(stdout," VECTOR : Format error - couldn't read data!\n");
/* return */
if (!header_found)
return(EOF);
else
return(header_found);
}
/*
* Read a line and apply options to a dataset or a curve
*/
static void read_vector_options(format,header,
view_pm,pt_prop,ds_prop,cv_prop,
rnpts,binary,vbs)
char *format;
char *header;
CNviewptr view_pm;
CNplotset_property *pt_prop;
CNdataset_property *ds_prop;
CNcurve_property *cv_prop;
CNdouble *rnpts;
int *binary;
int vbs;
{
char *argtbl[CN_MAXWORDS], *valtbl[CN_MAXWORDS];
char newheader[CN_MAXCHAR];
int nargs = 0, nvals = 0;
int argfound, i;
/* Initialize */
*binary = CN_FALSE;
/* CNparse_line wants "command arg=val arg=val" so create a new header */
(void) sprintf(newheader, "datafile %s",header);
/* Get the argument-value pairs from the line */
if (CNparse_line(newheader, CN_MAXCHAR,
&nargs, argtbl, CN_MAXWORDS,
&nvals, valtbl, CN_MAXWORDS)) {
/* Go thru the arguments and find specialized matches */
i = 0;
while (i < nargs) {
/* Go thru the arguments and find a match */
argfound = CN_TRUE;
if (strcmp(argtbl[i],"npts")==0) {
rnpts->val = atof(valtbl[i]);
rnpts->def = CN_TRUE;
if (vbs)
(void)fprintf(stdout," %8s: %-14s= %d\n",
format,"npts",(int)rnpts->val);
} else if (strcmp(argtbl[i],"binary")==0) {
*binary = CN_TRUE;
if (vbs)
(void)fprintf(stdout," %8s: %-14s= %s\n",format,"Binary","ON");
} else {
argfound = CN_FALSE;
}
/* Reset the table if a match was found; otherwise increment index */
CNdownshift(argfound,&i,argtbl,valtbl,&nargs,&nvals);
}
/* Look for plotset/dataset/curve arguments */
for (i=0; i<nargs; i++) {
if (!CNparse_view_property (view_pm,argtbl[i],valtbl[i],vbs))
if (!CNparse_plotset_property (pt_prop,argtbl[i],valtbl[i],vbs))
if (!CNparse_dataset_property(ds_prop,argtbl[i],valtbl[i],vbs))
if (!CNparse_curve_property(cv_prop,argtbl[i],valtbl[i],vbs))
(void) fprintf(stderr,
" warning : Invalid option \"%s=%s\"\n",
argtbl[i],valtbl[i]);
}
/* Clear the tables */
CNfreewords(&nargs, argtbl);
CNfreewords(&nvals, valtbl);
}
}
/*
* Print item-number error
*/
/*ARGSUSED*/
static void vector_itemno_err(format,lineno,itemno,ierr)
char *format;
int lineno,itemno,ierr;
{
(void) fprintf(stderr," warning (line %3d) %8s: ",lineno,format);
(void) fprintf(stderr,"need %d items\n",itemno);
}
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