int main(int argc, char *argv[])
{
// The data for the chart
double data0[] = {100, 100, 100, 100, 100};
double data1[] = {90, 85, 85, 80, 70};
double data2[] = {80, 65, 65, 75, 45};
// The labels for the chart
const char *labels[] = {"Population<*br*><*font=arial.ttf*>6 millions",
"GDP<*br*><*font=arial.ttf*>120 billions", "Export<*br*><*font=arial.ttf*>25 billions",
"Import<*br*><*font=arial.ttf*>24 billions",
"Investments<*br*><*font=arial.ttf*>20 billions"};
// Create a PolarChart object of size 480 x 460 pixels. Set background color to silver, with 1
// pixel 3D border effect
PolarChart *c = new PolarChart(480, 460, Chart::silverColor(), 0x000000, 1);
// Add a title to the chart using 15pt Times Bold Italic font. The title text is white (ffffff)
// on a deep green (008000) background
c->addTitle("Economic Growth", "timesbi.ttf", 15, 0xffffff)->setBackground(0x008000);
// Set plot area center at (240, 270), with 150 pixels radius
c->setPlotArea(240, 270, 150);
// Use 1 pixel width semi-transparent black (c0000000) lines as grid lines
c->setGridColor(0xc0000000, 1, 0xc0000000, 1);
// Add a legend box at top-center of plot area (240, 35) using horizontal layout. Use 10pt Arial
// Bold font, with silver background and 1 pixel 3D border effect.
LegendBox *b = c->addLegend(240, 35, false, "arialbd.ttf", 10);
b->setAlignment(Chart::TopCenter);
b->setBackground(Chart::silverColor(), Chart::Transparent, 1);
// Add area layers of different colors to represent the data
c->addAreaLayer(DoubleArray(data0, (int)(sizeof(data0) / sizeof(data0[0]))), 0xcc8880,
"Year 2004");
c->addAreaLayer(DoubleArray(data1, (int)(sizeof(data1) / sizeof(data1[0]))), 0xffd080,
"Year 1994");
c->addAreaLayer(DoubleArray(data2, (int)(sizeof(data2) / sizeof(data2[0]))), 0xa0bce0,
"Year 1984");
// Set the labels to the angular axis as spokes.
c->angularAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]))));
// Set radial axis from 0 - 100 with a tick every 20 units
c->radialAxis()->setLinearScale(0, 100, 20);
// Just show the radial axis as a grid line. Hide the axis labels by setting the label color to
// Transparent
c->radialAxis()->setColors(0xc0000000, Chart::Transparent);
// Output the chart
c->makeChart("stackradar.png");
//free up resources
delete c;
return 0;
}
//雷达图 polar radar
QWidget * Widget::addPolar()
{
// The data for the chart
double data[] = {90, 60, 65, 75, 40};
// The labels for the chart
const char *labels[] = {"Speed", "Reliability", "Comfort", "Safety", "Efficiency"};
// Create a PolarChart object of size 450 x 350 pixels
PolarChart *c = new PolarChart(450, 350);
// Use 1 pixel width semi-transparent black (c0000000) lines as grid lines
c->setGridColor(0xc0000000, 1, 0xc0000000, 1);
// Set center of plot area at (225, 185) with radius 150 pixels
c->setPlotArea(225, 185, 150);
// Add an area layer to the polar chart
c->addAreaLayer(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))), 0x9999ff);
//Add a red (0xcc6666)添加一个 区域的边框
// line layer using the same data with 3 pixel line width to highlight the border of the area.
c->addLineLayer(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))), 0x6666cc
)->setLineWidth(3);
// Set the labels to the angular axis as spokes
c->angularAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]))));
// // Set radial axis from 0 - 100 with a tick every 20 units
// c->radialAxis()->setLinearScale(0, 100, 20);
// // Just show the radial axis as a grid line. Hide the axis labels by setting the label color to
// // Transparent
// c->radialAxis()->setColors(0xc0F0DD00);//, Chart::Transparent);
// Set angular axis as 0 - 360, with a spoke every 30 units
//c->angularAxis()->setLinearScale(0, 360, 30);
// Output the chart
c->makeChart("simpleradar.png");
QWidget * _widget= new QWidget();
QChartViewer * _v= new QChartViewer(_widget);
_v->setChart(c);
return _widget;
}