#include "chartdir.h"
int main(int argc, char *argv[])
{
//The data for the bar chart
double data[] = {-6.3, 2.3, 0.7, -3.4, 2.2, -2.9, -0.1, -0.1, 3.3, 6.2, 4.3,
1.6};
//The labels for the bar chart
const char *labels[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
"Aug", "Sep", "Oct", "Nov", "Dec"};
//Create a XYChart object of size 500 x 320 pixels
XYChart *c = new XYChart(500, 320);
//Add a title to the chart using Arial Bold Italic font
c->addTitle("Productivity Change - Year 2001", "arialbi.ttf");
//Set the plotarea at (50, 30) and of size 400 x 250 pixels
c->setPlotArea(50, 30, 400, 250);
//Add a bar layer to the chart
Layer *layer = c->addBarLayer();
//Add a data set to the bar using a y zone color. The color is configured to
//be orange (0xff6600) below zero, and blue (0x6666ff) above zero.
layer->addDataSet(DoubleArray(data, sizeof(data)/sizeof(*data)),
layer->yZoneColor(0, 0xff6600, 0x6666ff));
//Add labels to the top of the bar using 8 pt Arial Bold font. The font
//color is configured to be red (0xcc3300) below zero, and blue (0x3333ff)
//above zero.
layer->setAggregateLabelStyle("arialbd.ttf", 8, layer->yZoneColor(0,
0xcc3300, 0x3333ff));
//Set the labels on the x axis and use Arial Bold as the label font
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(*labels))
)->setFontStyle("arialbd.ttf");
//Draw the y axis on the right of the plot area
c->setYAxisOnRight(true);
//Use Arial Bold as the y axis label font
c->yAxis()->setLabelStyle("arialbd.ttf");
//Add a title to the y axis
c->yAxis()->setTitle("Percentage");
//Add a light blue (0xccccff) zone for positive part of the plot area
c->yAxis()->addZone(0, 9999, 0xccccff);
//Add a pink (0xffffcc) zone for negative part of the plot area
c->yAxis()->addZone(-9999, 0, 0xffcccc);
//output the chart
c->makeChart("posnegbar.png");
//free up resources
delete c;
return 0;
}
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