#include "chartdir.h"
int main(int argc, char *argv[])
{
// The data for the bar chart
double data0[] = {100, 125, 156, 147, 87, 124, 178, 109, 140, 106, 192, 122};
double data1[] = {122, 156, 179, 211, 198, 177, 160, 220, 190, 188, 220, 270};
double data2[] = {167, 190, 213, 267, 250, 320, 212, 199, 245, 267, 240, 310};
const char *labels[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
"Sept", "Oct", "Nov", "Dec"};
// Create a XYChart object of size 580 x 280 pixels
XYChart *c = new XYChart(580, 280);
// Add a title to the chart using 14 pts Arial Bold Italic font
c->addTitle("Product Revenue For Last 3 Years", "arialbi.ttf", 14);
// Set the plot area at (50, 50) and of size 500 x 200. Use two alternative
// background colors (f8f8f8 and ffffff)
c->setPlotArea(50, 50, 500, 200, 0xf8f8f8, 0xffffff);
// Add a legend box at (50, 25) using horizontal layout. Use 8pts Arial as font,
// with transparent background.
c->addLegend(50, 25, false, "arial.ttf", 8)->setBackground(Chart::Transparent);
// Set the x axis labels
c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]
))));
// Draw the ticks between label positions (instead of at label positions)
c->xAxis()->setTickOffset(0.5);
// Add a multi-bar layer with 3 data sets
BarLayer *layer = c->addBarLayer(Chart::Side);
layer->addDataSet(DoubleArray(data0, (int)(sizeof(data0) / sizeof(data0[0]))),
0xff8080, "Year 2003");
layer->addDataSet(DoubleArray(data1, (int)(sizeof(data1) / sizeof(data1[0]))),
0x80ff80, "Year 2004");
layer->addDataSet(DoubleArray(data2, (int)(sizeof(data2) / sizeof(data2[0]))),
0x8080ff, "Year 2005");
// Set 50% overlap between bars
layer->setOverlapRatio(0.5);
// Add a title to the y-axis
c->yAxis()->setTitle("Revenue (USD in millions)");
// Output the chart
c->makeChart("overlapbar.png");
//free up resources
delete c;
return 0;
} |