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/* GDCHART 0.10.0dev 2nd CHART SAMPLE 2 Nov 2000 */
/* Copyright Bruce Verderaime 1998-2004 */
/*
** vi note :set tabstop=4 **
a more complicated example
High Low Close Combo (Volume) with annotation
produces a file: g2.png
Until a README is ready, see gdchart.h for options
All options are defaulted, no need to set any
*/
#include <stdio.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 *outpng1 = fopen( "g2.png", "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_size = 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 image */
/* GDC_SetColor = setcolor; /* see README */
GDC_PlotColor = 0xFFFFFF;
GDC_grid = FALSE;
/* GDC_xtitle="fy.1998"; */
/* fprintf( stdout, "Content-Type: image/png\n\n" ); /* rem: for web use */
/* finally: make the call */
out_graph( 200, 175, /* overall width, height */
outpng1, /* 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( outpng1 );
exit(0);
}
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