#include "chartdir.h"
int main(int argc, char *argv[])
{
// The data for the area chart
double data0[] = {42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56,
56, 60, 70, 76, 63, 67, 75, 64, 51};
double data1[] = {50, 45, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67,
58, 59, 73, 77, 84, 82, 80, 84, 89};
double data2[] = {61, 79, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17,
4, 23, 16, 25, 9, 10, 5, 7, 16};
const char *labels[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10",
"11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
"24"};
// Create a XYChart object of size 300 x 210 pixels. Set the background to pale
// yellow (0xffffc0) with a black border (0x0)
XYChart *c = new XYChart(300, 210, 0xffffc0, 0x000000);
// Set the plotarea at (50, 30) and of size 240 x 140 pixels. Use white
// (0xffffff) background.
c->setPlotArea(50, 30, 240, 140)->setBackground(0xffffff);
// Add a legend box at (50, 185) (below of plot area) using horizontal layout.
// Use 8 pts Arial font with Transparent background.
c->addLegend(50, 185, false, "", 8)->setBackground(Chart::Transparent);
// Add a title box to the chart using 8 pts Arial Bold font, with yellow
// (0xffff40) background and a black border (0x0)
c->addTitle("Sales Volume", "arialbd.ttf", 8)->setBackground(0xffff40, 0);
// Set the y axis label format to US$nnnn
c->yAxis()->setLabelFormat("US${value}");
// Set the labels on the x axis.
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(labels[0])));
// Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining
// labels.
c->xAxis()->setLabelStep(2, 1);
// Add an stack area layer with three data sets
AreaLayer *layer = c->addAreaLayer(Chart::Stack);
layer->addDataSet(DoubleArray(data0, sizeof(data0)/sizeof(data0[0])), 0x4040ff,
"Store #1");
layer->addDataSet(DoubleArray(data1, sizeof(data1)/sizeof(data1[0])), 0xff4040,
"Store #2");
layer->addDataSet(DoubleArray(data2, sizeof(data2)/sizeof(data2[0])), 0x40ff40,
"Store #3");
// Output the chart
c->makeChart("stackedarea.png");
//free up resources
delete c;
return 0;
} |