#include "chartdir.h"
int main(int argc, char *argv[])
{
// The data for the chart
double data0[] = {90, 25, 40, 55, 68, 44, 79, 85, 50};
double angles0[] = {15, 60, 110, 180, 230, 260, 260, 310, 340};
double data1[] = {80, 91, 66, 80, 92, 87};
double angles1[] = {40, 65, 88, 110, 150, 200};
// Create a PolarChart object of size 460 x 500 pixels, with a grey (e0e0e0)
// background and 1 pixel 3D border
PolarChart *c = new PolarChart(460, 500, 0xe0e0e0, 0x000000, 1);
// Add a title to the chart at the top left corner using 15pts Arial Bold Italic
// font. Use a wood pattern as the title background.
c->addTitle("Polar Line Chart Demo", "arialbi.ttf", 15)->setBackground(
c->patternColor("wood.png"));
// Set center of plot area at (230, 280) with radius 180 pixels, and white
// (ffffff) background.
c->setPlotArea(230, 280, 180, 0xffffff);
// Set the grid style to circular grid, with grids below the chart layers
c->setGridStyle(false, false);
// Add a legend box at top-center of plot area (230, 35) using horizontal layout.
// Use 10 pts Arial Bold font, with 1 pixel 3D border effect.
LegendBox *b = c->addLegend(230, 35, false, "arialbd.ttf", 9);
b->setAlignment(Chart::TopCenter);
b->setBackground(Chart::Transparent, Chart::Transparent, 1);
// Set angular axis as 0 - 360, with a spoke every 30 units
c->angularAxis()->setLinearScale(0, 360, 30);
// Add a blue (0xff) line layer to the chart using (data0, angle0)
PolarLineLayer *layer0 = c->addLineLayer(DoubleArray(data0,
sizeof(data0)/sizeof(data0[0])), 0x0000ff, "Close Loop Line");
layer0->setAngles(DoubleArray(angles0, sizeof(angles0)/sizeof(angles0[0])));
// Set the line width to 2 pixels
layer0->setLineWidth(2);
// Use 11 pixel triangle symbols for the data points
layer0->setDataSymbol(Chart::TriangleSymbol, 11);
// Enable data label and set its format
layer0->setDataLabelFormat("({value},{angle})");
// Set the data label text box with light blue (0x9999ff) backgruond color and 1
// pixel 3D border effect
layer0->setDataLabelStyle()->setBackground(0x9999ff, Chart::Transparent, 1);
// Add a red (0xff0000) line layer to the chart using (data1, angle1)
PolarLineLayer *layer1 = c->addLineLayer(DoubleArray(data1,
sizeof(data1)/sizeof(data1[0])), 0xff0000, "Open Loop Line");
layer1->setAngles(DoubleArray(angles1, sizeof(angles1)/sizeof(angles1[0])));
// Set the line width to 2 pixels
layer1->setLineWidth(2);
// Use 11 pixel diamond symbols for the data points
layer1->setDataSymbol(Chart::DiamondSymbol, 11);
// Set the line to open loop
layer1->setCloseLoop(false);
// Enable data label and set its format
layer1->setDataLabelFormat("({value},{angle})");
// Set the data label text box with light red (0xff9999) backgruond color and 1
// pixel 3D border effect
layer1->setDataLabelStyle()->setBackground(0xff9999, Chart::Transparent, 1);
// Output the chart
c->makeChart("polarline.png");
//free up resources
delete c;
return 0;
} |