#include "chartdir.h"
int main(int argc, char *argv[])
{
//The data for the line chart
double data0[] = {42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34,
51, 56, 56, 60, 70, 76, 63, 67, 75, 64, 51};
double data1[] = {50, 55, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60,
67, 67, 58, 59, 73, 77, 84, 82, 80, 84, 98};
double data2[] = {36, 28, 25, 33, 38, 20, 22, 30, 25, 33, 30, 24, 28, 15,
21, 26, 46, 42, 48, 45, 43, 52, 64, 60, 70};
//The labels for the line chart
const char *labels[] = {"0", "", "", "3", "", "", "6", "", "", "9", "", "",
"12", "", "", "15", "", "", "18", "", "", "21", "", "", "24"};
//Create a XYChart object of size 500 x 300 pixels, with a pale yellow
//(0xffff80) background, a black border, and 1 pixel 3D border effect
XYChart *c = new XYChart(500, 300, 0xffff80, 0x0, 1);
//Set the plotarea at (55, 45) and of size 420 x 210 pixels, with white
//background. Turn on both horizontal and vertical grid lines with light
//grey color (0xc0c0c0)
c->setPlotArea(55, 45, 420, 210, 0xffffff, -1, -1, 0xc0c0c0, -1);
//Add a legend box at (55, 25) (top of the chart) with horizontal layout.
//Use 8 pts Arial font. Set the background and border color to Transparent.
c->addLegend(55, 25, false, "", 8)->setBackground(Transparent);
//Add a title box to the chart using 11 pts Arial Bold Italic font. The text
//is white (0xffffff) on a dark red (0x800000) background, with a 1 pixel 3D
//border.
c->addTitle("Daily Server Load", "arialbi.ttf", 11, 0xffffff
)->setBackground(0x800000, -1, 1);
//Add a title to the y axis
c->yAxis()->setTitle("MBytes");
//Set the labels on the x axis
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(*labels)));
//Add a title to the x axis
c->xAxis()->setTitle("Jun 12, 2001");
//Add a line layer to the chart
LineLayer *layer = c->addLineLayer();
//Set the default line width to 2 pixels
layer->setLineWidth(2);
//Add the three data sets to the line layer. For demo purpose, we use a dash
//line color for the last line
layer->addDataSet(DoubleArray(data0, sizeof(data0)/sizeof(*data0)), -1,
"Server # 1");
layer->addDataSet(DoubleArray(data1, sizeof(data1)/sizeof(*data1)), -1,
"Server # 2");
layer->addDataSet(DoubleArray(data2, sizeof(data2)/sizeof(*data2)),
c->dashLineColor(0x3333ff, DashLine), "Server # 3");
//output the chart
c->makeChart("multiline.png");
//free up resources
delete c;
return 0;
}
|