//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;
}
int main(int argc, char *argv[])
{
// Data for the chart
double data[] = {9.4, 1.8, 2.1, 2.3, 3.5, 7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3, 5.1,
2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5};
double angles[] = {0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,
210, 225, 240, 255, 270, 285, 300, 315, 330, 345};
// Create a PolarChart object of size 460 x 460 pixels, with a silver background
// and a 1 pixel 3D border
PolarChart *c = new PolarChart(460, 460, Chart::silverColor(), 0x000000, 1);
// Add a title to the chart at the top left corner using 15pts Arial Bold Italic
// font. Use white text on deep blue background.
c->addTitle("Polar Vector Chart Demonstration", "arialbi.ttf", 15, 0xffffff
)->setBackground(0x000080);
// Set plot area center at (230, 240) with radius 180 pixels and white background
c->setPlotArea(230, 240, 180, 0xffffff);
// Set the grid style to circular grid
c->setGridStyle(false);
// Set angular axis as 0 - 360, with a spoke every 30 units
c->angularAxis()->setLinearScale(0, 360, 30);
// Add sectors to the chart as sector zones
int i;
for(i = 0; i < sizeof(data) / sizeof(data[0]); ++i) {
c->angularAxis()->addZone(angles[i], angles[i] + 15, 0, data[i], 0x33ff33,
0x008000);
}
// Add an Transparent invisible layer to ensure the axis is auto-scaled using the
// data
c->addLineLayer(DoubleArray(data, sizeof(data)/sizeof(data[0])),
Chart::Transparent);
// output the chart
c->makeChart("rose.png");
//free up resources
delete c;
return 0;
}
int main(int argc, char *argv[])
{
// The data for the chart
double data0[] = {43, 89, 76, 64, 48, 18, 92, 68, 44, 79, 71, 85};
double angles0[] = {45, 96, 169, 258, 15, 30, 330, 260, 60, 75, 110, 140};
double data1[] = {50, 91, 26, 29, 80, 53, 62, 87, 19, 40};
double angles1[] = {230, 210, 240, 310, 179, 250, 244, 199, 89, 160};
double data2[] = {88, 65, 76, 49, 80, 53};
double angles2[] = {340, 310, 340, 210, 30, 300};
// The labels on the angular axis (spokes)
const char *labels[] = {"North", "North\nEast", "East", "South\nEast", "South",
"South\nWest", "West", "North\nWest"};
// Create a PolarChart object of size 460 x 460 pixels
PolarChart *c = new PolarChart(460, 460);
// Add a title to the chart at the top left corner using 15pts Arial Bold Italic
// font
c->addTitle(Chart::TopLeft, "<*underline=2*>Plants in Wonderland", "arialbi.ttf",
15);
// Set center of plot area at (230, 240) with radius 180 pixels
c->setPlotArea(230, 240, 180);
// Use alternative light grey/dark grey sector background color
c->setPlotAreaBg(0xdddddd, 0xeeeeee, false);
// Set the grid style to circular grid
c->setGridStyle(false);
// Add a legend box at the top right corner of the chart using 9 pts Arial Bold
// font
c->addLegend(459, 0, true, "arialbd.ttf", 9)->setAlignment(Chart::TopRight);
// Set angular axis as 0 - 360, either 8 spokes
c->angularAxis()->setLinearScale(0, 360, StringArray(labels,
sizeof(labels)/sizeof(labels[0])));
// Set the radial axis label format
c->radialAxis()->setLabelFormat("{value} km");
// Add a blue (0xff) polar line layer to the chart using (data0, angle0)
PolarLineLayer *layer0 = c->addLineLayer(DoubleArray(data0,
sizeof(data0)/sizeof(data0[0])), 0x0000ff, "Immortal Weed");
layer0->setAngles(DoubleArray(angles0, sizeof(angles0)/sizeof(angles0[0])));
layer0->setLineWidth(0);
layer0->setDataSymbol(Chart::TriangleSymbol, 11);
// Add a red (0xff0000) polar line layer to the chart using (data1, angles1)
PolarLineLayer *layer1 = c->addLineLayer(DoubleArray(data1,
sizeof(data1)/sizeof(data1[0])), 0xff0000, "Precious Flower");
layer1->setAngles(DoubleArray(angles1, sizeof(angles1)/sizeof(angles1[0])));
// Disable the line by setting its width to 0, so only the symbols are visible
layer1->setLineWidth(0);
// Use a 11 pixel diamond data point symbol
layer1->setDataSymbol(Chart::DiamondSymbol, 11);
// Add a green (0x00ff00) polar line layer to the chart using (data2, angles2)
PolarLineLayer *layer2 = c->addLineLayer(DoubleArray(data2,
sizeof(data2)/sizeof(data2[0])), 0x00ff00, "Magical Tree");
layer2->setAngles(DoubleArray(angles2, sizeof(angles2)/sizeof(angles2[0])));
// Disable the line by setting its width to 0, so only the symbols are visible
layer2->setLineWidth(0);
// Use a 9 pixel square data point symbol
layer2->setDataSymbol(Chart::SquareSymbol, 9);
// output the chart
c->makeChart("polarscatter.png");
//free up resources
delete c;
return 0;
}