/* GDCHART 0.10.0dev 1st CHART SAMPLE 2 Nov 2000 */ /* Copyright Bruce Verderaime 1998, 1999, 2000 */ /* 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 #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 */ /* ----- 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); }