#include "chartdir.h"
void createChart(int img, const char *filename)
{
// The data for the chart
double data[] = {5.5, 3.5, -3.7, 1.7, -1.4, 3.3};
const char *labels[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun"};
// Create a XYChart object of size 200 x 190 pixels
XYChart *c = new XYChart(200, 190);
// Set the plot area at (30, 20) and of size 140 x 140 pixels
c->setPlotArea(30, 20, 140, 140);
// Configure the axis as according to the input parameter
if (img == 0) {
c->addTitle("No Axis Extension", "arial.ttf", 8);
} else if (img == 1) {
c->addTitle("Top/Bottom Extensions = 0/0", "arial.ttf", 8);
// Reserve 20% margin at top of plot area when auto-scaling
c->yAxis()->setAutoScale(0, 0);
} else if (img == 2) {
c->addTitle("Top/Bottom Extensions = 0.2/0.2", "arial.ttf", 8);
// Reserve 20% margin at top and bottom of plot area when auto-scaling
c->yAxis()->setAutoScale(0.2, 0.2);
} else if (img == 3) {
c->addTitle("Axis Top Margin = 15", "arial.ttf", 8);
// Reserve 15 pixels at top of plot area
c->yAxis()->setMargin(15);
} else {
c->addTitle("Manual Scale -5 to 10", "arial.ttf", 8);
// Set the y axis to scale from -5 to 10, with ticks every 5 units
c->yAxis()->setLinearScale(-5, 10, 5);
}
// Set the labels on the x axis
c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]
))));
// Add a color bar layer using the given data. Use a 1 pixel 3D border for the
// bars.
c->addBarLayer(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))),
IntArray(0, 0))->setBorderColor(-1, 1);
// Output the chart
c->makeChart(filename);
//free up resources
delete c;
}
int main(int argc, char *argv[])
{
createChart(0, "axisscale0.png");
createChart(1, "axisscale1.png");
createChart(2, "axisscale2.png");
createChart(3, "axisscale3.png");
createChart(4, "axisscale4.png");
return 0;
} |