
This example demonstrates a scatter chart created using XYChart.addScatterLayer.
ChartDirector 6.0 (C++ Edition)
Scatter Chart
Source Code Listing
#include "chartdir.h" int main(int argc, char *argv[]) { // The XY points for the scatter chart double dataX0[] = {10, 15, 6, 12, 14, 8, 13, 13, 16, 12, 10.5}; double dataY0[] = {130, 150, 80, 110, 110, 105, 130, 115, 170, 125, 125}; double dataX1[] = {6, 12, 4, 3.5, 7, 8, 9, 10, 12, 11, 8}; double dataY1[] = {65, 80, 40, 45, 70, 80, 80, 90, 100, 105, 60}; // Create a XYChart object of size 450 x 420 pixels XYChart *c = new XYChart(450, 420); // Set the plotarea at (55, 65) and of size 350 x 300 pixels, with a light grey border // (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color (0xc0c0c0) c->setPlotArea(55, 65, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1); // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times Bold // Italic font. Set the background and border color to Transparent. c->addLegend(50, 30, false, "timesbi.ttf", 12)->setBackground(Chart::Transparent); // Add a title to the chart using 18pt Times Bold Itatic font. c->addTitle("Genetically Modified Predator", "timesbi.ttf", 18); // Add a title to the y axis using 12pt Arial Bold Italic font c->yAxis()->setTitle("Length (cm)", "arialbi.ttf", 12); // Add a title to the x axis using 12pt Arial Bold Italic font c->xAxis()->setTitle("Weight (kg)", "arialbi.ttf", 12); // Set the axes line width to 3 pixels c->xAxis()->setWidth(3); c->yAxis()->setWidth(3); // Add an orange (0xff9933) scatter chart layer, using 13 pixel diamonds as symbols c->addScatterLayer(DoubleArray(dataX0, (int)(sizeof(dataX0) / sizeof(dataX0[0]))), DoubleArray( dataY0, (int)(sizeof(dataY0) / sizeof(dataY0[0]))), "Genetically Engineered", Chart::DiamondSymbol, 13, 0xff9933); // Add a green (0x33ff33) scatter chart layer, using 11 pixel triangles as symbols c->addScatterLayer(DoubleArray(dataX1, (int)(sizeof(dataX1) / sizeof(dataX1[0]))), DoubleArray( dataY1, (int)(sizeof(dataY1) / sizeof(dataY1[0]))), "Natural", Chart::TriangleSymbol, 11, 0x33ff33); // Output the chart c->makeChart("scatter.png"); //free up resources delete c; return 0; } |