#include "chartdir.h"
int main(int argc, char *argv[])
{
// The data for the chart
double data[] = {40, 15, 7, 5, 2};
// The labels for the chart
const char *labels[] = {"Hard Disk", "PCB", "Printer", "CDROM", "Keyboard"};
// Create a XYChart object of size 400 x 225 pixels. Use golden background color,
// with a 2 pixel 3D border.
XYChart *c = new XYChart(400, 225, Chart::goldColor(), -1, 2);
// Add a title box using Arial Bold/11 pt font. Set the background color to
// metallic blue (9999FF). Use a 1 pixel 3D border.
c->addTitle("Hardware Defects", "arialbd.ttf", 11)->setBackground(
Chart::metalColor(0x9999ff), -1, 1);
// Set the plotarea at (50, 40) and of 300 x 150 pixels in size, with a silver
// background color.
c->setPlotArea(50, 40, 300, 150, Chart::silverColor());
// Add a line layer for the pareto line
LineLayer *lineLayer = c->addLineLayer();
// Compute the pareto line by accumulating the data
ArrayMath lineData = ArrayMath(DoubleArray(data, sizeof(data)/sizeof(data[0])));
lineData.acc();
// Set a scaling factor such as the maximum point of the line is scaled to 100
double scaleFactor = 100 / lineData.max();
// Add the pareto line using the scaled data. Use deep blue (0x80) as the line
// color, with light blue (0x9999ff) diamond symbols
lineLayer->addDataSet(lineData.mul(scaleFactor), 0x000080)->setDataSymbol(
Chart::DiamondSymbol, 9, 0x9999ff);
// Set the line width to 2 pixel
lineLayer->setLineWidth(2);
// Add a multi-color bar layer using the given data.
BarLayer *barLayer = c->addBarLayer(DoubleArray(data,
sizeof(data)/sizeof(data[0])), IntArray(0, 0));
// Bind the layer to the secondary (right) y-axis.
barLayer->setUseYAxis2();
// Set soft lighting for the bars with light direction from the right
barLayer->setBorderColor(Chart::Transparent, Chart::softLighting(Chart::Right));
// Set the labels on the x axis.
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(labels[0])));
// Set the primary y-axis scale as 0 - 100 with a tick every 20 units
c->yAxis()->setLinearScale(0, 100, 20);
// Set the label format of the y-axis label to include a percentage sign
c->yAxis()->setLabelFormat("{value}%");
// Add a title to the secondary y-axis
c->yAxis2()->setTitle("Frequency");
// Set the secondary y-axis label foramt to show no decimal point
c->yAxis2()->setLabelFormat("{value|0}");
// Set the relationship between the two y-axes, which only differ by a scaling
// factor
c->syncYAxis(1 / scaleFactor);
// Output the chart
c->makeChart("pareto.png");
//free up resources
delete c;
return 0;
} |