#include "chartdir.h"
int main(int argc, char *argv[])
{
// The data for the chart
double data[] = {51, 15, 51, 40, 17, 87, 94, 21, 35, 88, 50, 60};
// The labels for the chart
const char *labels[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct",
"Nov", "Dec"};
// Create a PolarChart object of size 400 x 420 pixels
PolarChart *c = new PolarChart(400, 420);
// Set background color to a 2 pixel pattern color, with a black border and 1 pixel 3D border
// effect
int pattern1[] = {0xffffff, 0xe0e0e0};
c->setBackground(c->patternColor(IntArray(pattern1, (int)(sizeof(pattern1) / sizeof(pattern1[0])
)), 2), 0, 1);
// Add a title to the chart using 16pt Arial Bold Italic font. The title text is white
// (0xffffff) on 2 pixel pattern background
int pattern2[] = {0x000000, 0x000080};
c->addTitle("Chemical Concentration", "arialbi.ttf", 16, 0xffffff)->setBackground(
c->patternColor(IntArray(pattern2, (int)(sizeof(pattern2) / sizeof(pattern2[0]))), 2));
// Set center of plot area at (200, 240) with radius 145 pixels. Set background color to blue
// (9999ff)
c->setPlotArea(200, 240, 145, 0x9999ff);
// Color the region between radius = 40 to 80 as green (99ff99)
c->radialAxis()->addZone(40, 80, 0x99ff99);
// Color the region with radius > 80 as red (ff9999)
c->radialAxis()->addZone(80, 999, 0xff9999);
// Set the grid style to circular grid
c->setGridStyle(false);
// Set the radial axis label format
c->radialAxis()->setLabelFormat("{value} ppm");
// Use semi-transparent (40ffffff) label background so as not to block the data
c->radialAxis()->setLabelStyle()->setBackground(0x40ffffff, 0x40000000);
// Add a legend box at (200, 30) top center aligned, using 9pt Arial Bold font. with a black
// border.
LegendBox *legendBox = c->addLegend(200, 30, false, "arialbd.ttf", 9);
legendBox->setAlignment(Chart::TopCenter);
// Add legend keys to represent the red/green/blue zones
legendBox->addKey("Under-Absorp", 0x9999ff);
legendBox->addKey("Normal", 0x99ff99);
legendBox->addKey("Over-Absorp", 0xff9999);
// Add a blue (000080) spline line layer with line width set to 3 pixels and using yellow
// (ffff00) circles to represent the data points
PolarSplineLineLayer *layer = c->addSplineLineLayer(DoubleArray(data, (int)(sizeof(data) /
sizeof(data[0]))), 0x000080);
layer->setLineWidth(3);
layer->setDataSymbol(Chart::CircleShape, 11, 0xffff00);
// Set the labels to the angular axis as spokes.
c->angularAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]))));
// Output the chart
c->makeChart("polarzones.png");
//free up resources
delete c;
return 0;
} |