Function:s2pnts

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s2pnts

Draw a set of points with different markers.

Prototype

void s2pnts(int np, float *xpts, float *ypts, float *zpts,int *symbols, int ns);

Description

Draw a set of points with different markers. The markers are selected from the array symbols of length ns. If ns == n, then the ith point is drawn with the ith symbol. If ns < n, then for the first ns points, the ith symbol is used for the ith point, thereafter the first symbol is used for all remaining points.

Available values for symbols are:

0 = wireframe box

1 = point

2 = wireframe 3D cross

4 = shaded sphere

6 = shaded box


See Also

s2pt1 Draw a single point with a given symbol.
s2pt Draw a set of points with a given symbol.

PGPLOT Equivalent

PGPNTS

Code Example

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "s2plot.h"

int main(int argc, char *argv[])
{
   int i;					/* Loop variable */
   int N = 50;					/* Number of points */
   float x[50], y[50], z[50];			/* Coordinates of points */
   int symbol[50];				/* Array of symbols */

   srand48((long)time(NULL));			/* Seed random numbers */
   for (i=0;i<N;i++) {
      x[i] = drand48()*2.0 - 1.0;
      y[i] = drand48()*2.0 - 1.0;
      z[i] = drand48()*2.0 - 1.0;
      symbol[i] = (int)(drand48()*6);		/* Random symbol 0...6 */
      if (symbol[i] == 3) symbol[i] = 0;	/* There is no symbol 3 */
      if (symbol[i] == 5) symbol[i] = 6;	/* There is no symbol 5 */
   }

   s2opend("/?",argc, argv);			/* Open the display */
   s2swin(-1.,1., -1.,1., -1.,1.);		/* Set the window coordinates */
   s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0);	/* Draw coordinate box */

   s2sch(2);					/* Sets size of most symbols */
   s2slw(2);					/* Sets size of point */

   s2pnts(N,x,y,z,symbol,N);			/* Draw the points */

   s2show(1);					/* Open the s2plot window */
   
   return 1;
}

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