text: /* GDCHART 0.10.0dev  1st CHART SAMPLE  2 Nov 2000 */
  /* Copyright Bruce Verderaime 1998-2004 */
  
  /* writes gif file to stdout */
  
  /* sample gdchart usage */
  /* this will produce a 3D BAR chart */
  /* this is suitable for use as a CGI */
  
  /* for CGI use un-comment the "Content-Type" line */
  
  #include <stdio.h>
  
  #include "gdc.h"
  #include "gdchart.h"
  
  main()
  {
      /* ----- set some data ----- */
  /*    float   a[6]  = { 0.5, 0.09, 0.6, 0.85, 0.0, 0.90 }, */
  /*            b[6]  = { 1.9, 1.3,  0.6, 0.75, 0.1, 2.0 }; */
      float   a[2][6]  = { { 0.5, 0.09, 0.6, 0.85, 0.0, 0.90 },
                           { 1.9, 1.3,  0.6, 0.75, 0.1, 2.0 } };
  
      /* ----- X labels ----- */
      char    *t[6] = { "Chicago", "New York", "L.A.", "Atlanta", "Paris, MD\n(USA) ", "London" };
      /* ----- data set colors (RGB) ----- */
      unsigned long   sc[2]    = { 0xFF8080, 0x8080FF };
  
      GDC_BGColor   = 0xFFFFFFL;                  /* backgound color (white) */
      GDC_LineColor = 0x000000L;                  /* line color      (black) */
      GDC_SetColor  = &(sc[0]);                   /* assign set colors */
  
  /*    printf( "Content-Type: image/gif\n\n" );     tell browser type */
      GDC_image_type = GDC_GIF;
                                /* ----- call the lib ----- */
      GDC_out_graph( 250, 200,      /* short       width, height */
                 stdout,        /* FILE*       open FILE pointer */
                 GDC_3DBAR,     /* GDC_CHART_T chart type */
                 6,             /* int         number of points per data set */
                 t,             /* char*[]     array of X labels */
                 2,             /* int         number of data sets */
                 (float*)a, NULL );             /* float[]     data set 1 */
  /*               b );             ...        data set n */ 
  
      exit(0);
  }
  