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==s2qwin== Query the world coordinate range. ==Prototype== <code><pre> void s2qwin(float *x1, float *x2, float *y1, float *y2, float *z1, float *z2); </pre></code> ==Description== Query the world coordinate range. == See Also == <table> <tr><td>[[Function:s2swin | s2swin ]]</td><td>Set up the world coordinate range for the device. </td></tr> </table> ==PGPLOT Equivalent== [http://www.astro.caltech.edu/~tjp/pgplot/subroutines.html#PGQWIN PGQWIN] ==Code Example== <code><pre> #include <stdio.h> #include <stdlib.h> #include <time.h> #include <math.h> #include "s2plot.h" int main(int argc, char *argv[]) { float dx1, dx2, dy1, dy2, dz1, dz2; /* Viewport ranges */ float cx1, cx2, cy1, cy2, cz1, cz2; /* Coordiante ranges */ srand48((long)time(NULL)); /* Seed random numbers */ cx1 = -ceil(drand48()*5.0)-2.05; cx2 = -cx1; /* Random coordinates */ cy1 = -ceil(drand48()*5.0)-2.05; cy2 = -cy1; cz1 = -ceil(drand48()*5.0)-2.05; cz2 = -cz1; s2opend("/?",argc, argv); /* Open the display */ s2svp(-1.,1., -1.,1., -1.,1.); /* First view port */ s2swin(cx1,cx2, cy1,cy2, cz1,cz2); /* Set the window coordinates */ s2box("BCDETMNO",2.0,0,"BCDETMNO",2.0,0,"BCDETMNO",2.0,0); /* Draw coordinate box */ s2qvp(&dx1,&dx2, &dy1,&dy2, &dz1,&dz2); /* Query viewport coordinates */ dx1 /= 2.0; dx2 /= 2.0; /* Halve the coordintes */ dy1 /= 2.0; dy2 /= 2.0; dz1 /= 2.0; dz2 /= 2.0; s2qwin(&cx1,&cx2, &cy1,&cy2, &cz1,&cz2); /* Query window coordinates */ cx1 /= 2.0; cx2 /= 2.0; /* Halve the coordintes */ cy1 /= 2.0; cy2 /= 2.0; cz1 /= 2.0; cz2 /= 2.0; s2sci(S2_PG_RED); s2svp(dx1,dx2, dy1,dy2, dz1,dz2); /* Create a half-size viewport */ s2swin(cx1,cx2, cy1,cy2, cz1,cz2); /* Set the window coordinates */ s2box("BCDETMNO",2.0,0,"BCDETMNO",2.0,0,"BCDETMNO",2.0,0); /* Draw coordinate box */ s2show(1); /* Open the s2plot window */ return 1; } </pre></code> [[S2PLOT:Function List | Back]] to S2PLOT function list. __NOTOC__ __NOEDITSECTION__

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