Function:s2pt
From S2PLOT
s2pt
Draw a set of points with a given symbol.
Prototype
void s2pt(int np, float *xpts, float *ypts, float *zpts, int symbol);
Description
Draw a set of npts points. Symbol value 1 produces a single pixel, independent of distance to the point. Symbols are drawn in the current colour. Markers taking finite size are scaled by the current character height. The current linewidth does not affect markers.
Argument symbol should be one of: 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. |
| s2pnts | Draw a set of points with different markers. |
PGPLOT Equivalent
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 = 4; /* Shaded sphere symbol */
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;
}
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 symbol */
s2pt(N,x,y,z,symbol); /* Draw a single point */
s2show(1); /* Open the s2plot window */
return 1;
}
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