gdc_samp2.c

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/* GDCHART 0.94b  2nd CHART SAMPLE  12 Nov 1998 */

/*
** vi note  :set tabstop=4 **

 a more complicated example
 High Low Close Combo (Volume)  with annotation

 produces a file: g2.gif

 Until a README is ready, see gdchart.h for options
        All options are defaulted, no need to set any
*/

#include <stdio.h>
#include <values.h>

#include "gdc.h"
#include "gdchart.h"


main()
{
        /* set some sample data points */
        float   h[12]  = {      17.8,  17.1,  17.3,  GDC_NOVALUE,  17.2,  17.1,
                                                17.3,  17.3,  17.3,  17.1,         17.5,  17.4 };

        float   c[12]  =  { 17.0,  16.8,  16.9,  GDC_NOVALUE,  16.9,  16.8,
                                            17.2,  16.8,  17.0,  16.9,         16.4,  16.1 };

        float   l[12]  = {  16.8,  16.8,  16.7,  GDC_NOVALUE,  16.5,  16.0,
                                                16.1,  16.8,  16.5,  16.9,         16.2,  16.0 };

        float   v[12]  = {  150.0, 100.0, 340.0,  GDC_NOVALUE, 999.0, 390.0,
                                                420.0, 150.0, 100.0,  340.0,       1590.0, 700.0 };
        char    *t[12] = {      "May", "Jun", "Jul",  "Aug",       "Sep",  "Oct",
                                                "Nov", "Dec", "Jan", "Feb",        "Mar",  "Apr" };

//      /* set color RGB as ulong array */
//      unsigned long   setcolor[3]    = { 0xC0C0FF, 0xFF4040, 0xFFFFFF };

        GDC_ANNOTATION_T        anno;

        /* need an open FILE pointer  - can be stdout */
        FILE                            *outgif1 = fopen( "g2.gif", "wb" );     /* rem: test open() fail */


        anno.color = 0x00FF00;
        strncpy( anno.note, "Did Not\nTrade", MAX_NOTE_LEN );   /* don't exceed MAX_NOTE_LEN */
        anno.point = 3;                                                                                 /* first is 0 */
        GDC_annotation_font = GDC_TINY;
        GDC_annotation = &anno;                                                                 /* set annote option */

        GDC_HLC_style = GDC_HLC_I_CAP | GDC_HLC_CLOSE_CONNECTED;
        GDC_HLC_cap_width = 45;

        GDC_bar_width     = 75;                                                                 /* % */

//      GDC_BGImage = "W.gif";

        GDC_title = "Widget Corp.";
        GDC_ytitle = "Price ($)";
        GDC_ytitle2 = "Volume (K)";
        GDC_ytitle_size = GDC_SMALL;
        GDC_VolColor = 0x4040FFL;                                                               /* aka combo */
        GDC_3d_depth  = 4.0;                                                                    /* % entire gif */

//      GDC_SetColor  = setcolor;                                                               /* see README */
        GDC_PlotColor = 0xFFFFFF;
        GDC_grid = FALSE;

//      GDC_xtitle="fy.1998";

//      fprintf( stdout, "Content-Type: image/gif\n\n" );               /* rem: for web use */
                                                                                                                        /* finally: make the call */
        out_graph( 200, 175,                                                                    // overall width, height
                           outgif1,                                                                             // open FILE pointer
                           GDC_COMBO_HLC_AREA,                                                  // chart type
                           12,                                                                                  // number of points
                           t,                                                                                   // X axis label array
                           1,                                                                                   // number of sets (see README)
                           h,                                                                                   // set 1 (high)
                           l,                                                                                   // low
                           c,                                                                                   // close
                           v );                                                                                 // combo/volume

        fclose( outgif1 );
        exit(0);
}

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