int main(int argc, char *argv[])
{
// The data for the chart
double dataY[] = {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1};
double dataX[] = {Chart::chartTime(2008, 7, 1, 0, 0, 0), Chart::chartTime(2008, 7, 1, 2, 17, 2),
Chart::chartTime(2008, 7, 1, 8, 5, 30), Chart::chartTime(2008, 7, 1, 10, 54, 10),
Chart::chartTime(2008, 7, 1, 15, 40, 0), Chart::chartTime(2008, 7, 1, 18, 22, 20),
Chart::chartTime(2008, 7, 1, 22, 17, 14), Chart::chartTime(2008, 7, 2, 2, 55, 50),
Chart::chartTime(2008, 7, 2, 8, 17, 14), Chart::chartTime(2008, 7, 2, 11, 55, 50),
Chart::chartTime(2008, 7, 2, 13, 17, 14), Chart::chartTime(2008, 7, 2, 17, 55, 50),
Chart::chartTime(2008, 7, 2, 20, 17, 14), Chart::chartTime(2008, 7, 3, 0, 0, 0)};
// In this example, we only use position 1, 3, 5 for the data series. Positions 0, 2, 4, 6 are
// empty and serve as gaps.
const char *labels[] = {"", "ON Only Filling", "",
"<*font,color=cc2200*>ON<*/font*> / <*font,color=00aa22*>OFF<*/font*> Filling", "",
"Logic Line", ""};
// Create a XYChart object of size 600 x 180 pixels
XYChart *c = new XYChart(600, 180);
// Add a title to the chart using 10 points Arial Bold font. Set top/bottom margins to 12
// pixels.
TextBox *title = c->addTitle("Binary Data Series Demonstration", "arialbd.ttf", 10);
// Tentatively set the plotarea at (100, 30) and of size 470 x 120 pixels. Use transparent
// border. Use grey (888888) solid line and light grey (ccccc) dotted line as major and minor
// vertical grid lines.
c->setPlotArea(100, 30, 470, 120, -1, -1, Chart::Transparent)->setGridColor(Chart::Transparent,
0x888888, Chart::Transparent, c->dashLineColor(0xcccccc, Chart::DotLine));
// Set axes to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
// Set the y axis labels
c->yAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]))));
// Set y-axis label style to 8pt Arial Bold
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
// Set x-axis major and minor tick density to 50 and 5 pixels. ChartDirector auto-scaling will
// use this as the guideline when putting ticks on the x-axis.
c->xAxis()->setTickDensity(50, 5);
// Use "<*font=Arial Bold*>{value|mmm dd}" for the first label of an hour, and "{value|hh:nn}"
// for all other labels.
c->xAxis()->setMultiFormat(Chart::StartOfDayFilter(), "<*font=arialbd.ttf*>{value|mmm dd}",
Chart::AllPassFilter(), "{value|hh:nn}");
//
// A Logic Line can be achieved using a StepLineLayer in ChartDirector
//
// Shift the data by 4.5, so instead of 0 - 1, it is now 4.5 to 5.5, or fluctuate around the y =
// 5 (Logic Line label) position.
ArrayMath shiftedLine0 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))
).add(4.5);
// Add step lines using the original and the reversed data
StepLineLayer *layer0 = c->addStepLineLayer(shiftedLine0, 0x0000ff);
layer0->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
//
// To perform ON/OFF filling, we draw the logic line, and its reverse, and fill the region in
// between
//
// Shift the data by 2.5, so instead of 0 - 1, it is now 2.5 to 3.5, or fluctuate around the y =
// 3 (ON/OFF Filing label) position.
ArrayMath shiftedLine1 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))
).add(2.5);
// Reverse the data, so the 0 becomes 1 and 1 becomes 0, and shift it as well.
ArrayMath reverseShiftedLine1 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[
0])))).mul(-1).add(3.5);
// Add step lines using the original and the reversed data
StepLineLayer *layer1 = c->addStepLineLayer(shiftedLine1, Chart::Transparent);
layer1->addDataSet(reverseShiftedLine1, Chart::Transparent);
layer1->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
// Fill the region between the two step lines with green (00aa22) or red (cc2200), depending on
// whether the original or the reserve is higher.
c->addInterLineLayer(layer1->getLine(0), layer1->getLine(1), 0x00aa22, 0xcc2200);
//
// The ON Only filling is the same as ON/OFF filling, except the OFF filling color is
// transparent
//
// Shift the data by 0.5, so instead of 0 - 1, it is now 0.5 to 1.5, or fluctuate around the y =
// 1 (ON Only Filing label) position.
ArrayMath shiftedLine2 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))
).add(0.5);
// Reverse the data, so the 0 becomes 1 and 1 becomes 0, and shift it as well.
ArrayMath reverseShiftedLine2 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[
0])))).mul(-1).add(1.5);
// Add step lines using the original and the reversed data
StepLineLayer *layer2 = c->addStepLineLayer(shiftedLine2, Chart::Transparent);
layer2->addDataSet(reverseShiftedLine2, Chart::Transparent);
layer2->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
// Fill the region between the two step lines with green (00aa22) or transparent, depending on
// whether the original or the reserve is higher.
c->addInterLineLayer(layer2->getLine(0), layer2->getLine(1), 0x00aa22, Chart::Transparent);
// Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels from
// the left edge, 10 pixels below the title, 30 pixels from the right edge, and 10 pixels above
// the bottom edge.
c->packPlotArea(10, title->getHeight() + 10, c->getWidth() - 30, c->getHeight() - 10);
// Output the chart
c->makeChart("binaryseries.png");
//free up resources
delete c;
return 0;
}
