gd_graph.h

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#ifndef GD_GRAPH_H
#define GD_GRAPH_H 1

#ifdef __cplusplus
extern "C" {
#endif

#include <stdio.h>
#include <gd.h>

//#define NUM_COLORS 11
#define NUM_COLORS 8
#define NUM_MARKERS 10

typedef enum gdgMarker {
        FILLED_SQUARE, 
        OPEN_SQUARE,   
        POINT,         
        HORIZONTAL_CROSS, 
        DIAGONAL_CROSS, 
        OPEN_TRIANGLE,  
        FILLED_TRIANGLE, 
        OPEN_UTRIANGLE,  
        FILLED_UTRIANGLE, 
        FILLED_CIRCLE,  
        OPEN_CIRCLE,     
        AUTO_MARKER     
} gdgMarkerType;


typedef struct gdgIM {
        char ***labels;
        char ***links;
        FILE *out;
        int both; 
} gdgImageMapInfo; 
typedef enum gdgBar {
        FILLED, 
        OPEN, 
        OUTLINE  
} gdgBarType;

typedef struct gdgPlot {
        int lineColor;
        int markerColor;
        int useLine;
        int noSort;
        gdgMarkerType marker;
        int markerSize;
        double *x;
        double *y;
        int numPoints;
        struct gdgPlot *next;
} *gdgPlotPtr;

typedef struct gdgImage {
        int height;
        int width;
        int x1,x2,y1,y2; /* bounds of the inner rectangle where points are actually plotted */
        char *xlabel;
        char *ylabel;
        char *title;
        char **legends;
        gdgMarkerType marker;
        gdgBarType bar;
//      gdgBarType bar;
        int markerSize;
        gdImagePtr im;
        double ymin;
        double ymax;
        gdgPlotPtr plots;
        gdgImageMapInfo mapinfo;
        int numPlots;
        int dataPlotted;
        int lineColorMark;  /* used in automatic color selection */
        int pointColorMark; /* used in automatic color selection */
        int markerStyleMark;  /* used in automatic marker selection */

        /* the built in colors for the image */
        int BLACK; 
        int WHITE; 
        int RED; 
        int GREEN; 
        int BLUE; 
        int CHARTREUSE; 
        int CHOCOLATE; 
        int CYAN; 
        int GRAY; 
        int MAGENTA; 
        int ORANGE; 
        int YELLOW; 
        int LIGHT_GRAY;
        int allColors[NUM_COLORS];
        gdgMarkerType allMarkers[NUM_MARKERS];
} *gdgImagePtr;



/* macros */
#define gdgGetGD(gdg) gdg->im


/* functions for memory allocation and destruction */

gdgImagePtr gdgCreatePlot(int width, int height);
void gdgImageDestroy(gdgImagePtr gdg);


void gdgSetColorMap(int map);


void gdgSetLegend(gdgImagePtr gdg, char **legends);

void gdgSetImageMap(gdgImagePtr gdg, gdgImageMapInfo mapinfo);

/* functions for annotating/beautifying */
void gdgSetYLabel(gdgImagePtr gdg, char *ylabel);
void gdgSetXLabel(gdgImagePtr gdg, char *xlabel);
void gdgSetTitle(gdgImagePtr gdg, char *title);

void gdgSetMarker(gdgImagePtr gdg, gdgMarkerType marker);

void gdgSetBar(gdgImagePtr gdg, gdgBarType bar);

void gdgSetMarkerSize(gdgImagePtr gdg, int size);

void gdgSetYScale(gdgImagePtr gdg, double ymin, double ymax);

void gdgSetUseLine(int val);

void gdgSetNoSort(int val);


int gdgGetColor(const gdgImagePtr gdg, const char *color);


void gdgImage2DPlot(gdgImagePtr gdg, int numPoints, double *x, double *y, int markerColor, int lineColor);

void gdgImageHist(gdgImagePtr gdg, int numPoints, double *x, int maxBreaks, int noYscale, int color);

void gdgImageHeat(gdgImagePtr gdg, int numRows, int numCols, double **matrix, char **xlabels, char **ylabels, double squishWithin, int autoCenter);

void gdgImagePng(gdgImagePtr gdg, FILE *out);
void gdgImageJpeg(gdgImagePtr gdg, FILE *out, int quality);



#ifdef __cplusplus
}
#endif

#endif

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