int main(int argc, char *argv[])
{
// The XY data of the first data series
double dataX0[] = {10, 35, 17, 4, 22, 29, 45, 52, 63, 39};
double dataY0[] = {2.0, 3.2, 2.7, 1.2, 2.8, 2.9, 3.1, 3.0, 2.3, 3.3};
// The XY data of the second data series
double dataX1[] = {30, 35, 17, 4, 22, 59, 43, 52, 63, 39};
double dataY1[] = {1.0, 1.3, 0.7, 0.6, 0.8, 3.0, 1.8, 2.3, 3.4, 1.5};
// The XY data of the third data series
double dataX2[] = {28, 35, 15, 10, 22, 60, 46, 64, 39};
double dataY2[] = {2.0, 2.2, 1.2, 0.4, 1.8, 2.7, 2.4, 2.8, 2.4};
// Create a XYChart object of size 540 x 480 pixels
XYChart *c = new XYChart(540, 480);
// Set the plotarea at (70, 65) and of size 400 x 350 pixels, with white background and a light
// grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
// (0xc0c0c0)
c->setPlotArea(70, 65, 400, 350, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);
// Add a legend box with the top center point anchored at (270, 30). Use horizontal layout. Use
// 10pt Arial Bold Italic font. Set the background and border color to Transparent.
LegendBox *legendBox = c->addLegend(270, 30, false, "arialbi.ttf", 10);
legendBox->setAlignment(Chart::TopCenter);
legendBox->setBackground(Chart::Transparent, Chart::Transparent);
// Add a title to the chart using 18 point Times Bold Itatic font.
c->addTitle("Parametric Curve Fitting", "timesbi.ttf", 18);
// Add titles to the axes using 12pt Arial Bold Italic font
c->yAxis()->setTitle("Axis Title Placeholder", "arialbi.ttf", 12);
c->xAxis()->setTitle("Axis Title Placeholder", "arialbi.ttf", 12);
// Set the axes line width to 3 pixels
c->yAxis()->setWidth(3);
c->xAxis()->setWidth(3);
// Add a scatter layer using (dataX0, dataY0)
c->addScatterLayer(DoubleArray(dataX0, (int)(sizeof(dataX0) / sizeof(dataX0[0]))), DoubleArray(
dataY0, (int)(sizeof(dataY0) / sizeof(dataY0[0]))), "Polynomial", Chart::GlassSphere2Shape,
11, 0xff0000);
// Add a degree 2 polynomial trend line layer for (dataX0, dataY0)
TrendLayer *trend0 = c->addTrendLayer(DoubleArray(dataX0, (int)(sizeof(dataX0) / sizeof(dataX0[0
]))), DoubleArray(dataY0, (int)(sizeof(dataY0) / sizeof(dataY0[0]))), 0xff0000);
trend0->setLineWidth(3);
trend0->setRegressionType(Chart::PolynomialRegression(2));
// Add a scatter layer for (dataX1, dataY1)
c->addScatterLayer(DoubleArray(dataX1, (int)(sizeof(dataX1) / sizeof(dataX1[0]))), DoubleArray(
dataY1, (int)(sizeof(dataY1) / sizeof(dataY1[0]))), "Exponential", Chart::GlassSphere2Shape,
11, 0x00aa00);
// Add an exponential trend line layer for (dataX1, dataY1)
TrendLayer *trend1 = c->addTrendLayer(DoubleArray(dataX1, (int)(sizeof(dataX1) / sizeof(dataX1[0
]))), DoubleArray(dataY1, (int)(sizeof(dataY1) / sizeof(dataY1[0]))), 0x00aa00);
trend1->setLineWidth(3);
trend1->setRegressionType(Chart::ExponentialRegression);
// Add a scatter layer using (dataX2, dataY2)
c->addScatterLayer(DoubleArray(dataX2, (int)(sizeof(dataX2) / sizeof(dataX2[0]))), DoubleArray(
dataY2, (int)(sizeof(dataY2) / sizeof(dataY2[0]))), "Logarithmic", Chart::GlassSphere2Shape,
11, 0x0000ff);
// Add a logarithmic trend line layer for (dataX2, dataY2)
TrendLayer *trend2 = c->addTrendLayer(DoubleArray(dataX2, (int)(sizeof(dataX2) / sizeof(dataX2[0
]))), DoubleArray(dataY2, (int)(sizeof(dataY2) / sizeof(dataY2[0]))), 0x0000ff);
trend2->setLineWidth(3);
trend2->setRegressionType(Chart::LogarithmicRegression);
// Output the chart
c->makeChart("paramcurve.png");
//free up resources
delete c;
return 0;
}
int main(int argc, char *argv[])
{
char buffer[256];
// The XY data of the first data series
double dataX[] = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
double dataY[] = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3};
// Create a XYChart object of size 450 x 420 pixels
XYChart *c = new XYChart(450, 420);
// Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white
// background and a light grey border (0xc0c0c0). Turn on both horizontal and
// vertical grid lines with light grey color (0xc0c0c0)
c->setPlotArea(55, 65, 350, 300, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);
// Add a title to the chart using 18 point Times Bold Itatic font.
c->addTitle("Server Performance", "timesbi.ttf", 18);
// Add titles to the axes using 12 pts Arial Bold Italic font
c->yAxis()->setTitle("Response Time (sec)", "arialbi.ttf", 12);
c->xAxis()->setTitle("Server Load (TPS)", "arialbi.ttf", 12);
// Set the axes line width to 3 pixels
c->yAxis()->setWidth(3);
c->xAxis()->setWidth(3);
// Add a scatter layer using (dataX, dataY)
c->addScatterLayer(DoubleArray(dataX, sizeof(dataX)/sizeof(dataX[0])),
DoubleArray(dataY, sizeof(dataY)/sizeof(dataY[0])), "", Chart::DiamondSymbol,
11, 0x008000);
// Add a trend line layer for (dataX, dataY)
TrendLayer *trendLayer = c->addTrendLayer(DoubleArray(dataX,
sizeof(dataX)/sizeof(dataX[0])), DoubleArray(dataY,
sizeof(dataY)/sizeof(dataY[0])), 0x008000);
// Set the line width to 3 pixels
trendLayer->setLineWidth(3);
// Add a 95% confidence band for the line
trendLayer->addConfidenceBand(0.95, 0x806666ff);
// Add a 95% confidence band (prediction band) for the points
trendLayer->addPredictionBand(0.95, 0x8066ff66);
// Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 10
// pts Arial Bold Italic font. Set the background and border color to
// Transparent.
LegendBox *legendBox = c->addLegend(50, 30, false, "arialbi.ttf", 10);
legendBox->setBackground(Chart::Transparent);
// Add entries to the legend box
legendBox->addKey("95% Line Confidence", 0x806666ff);
legendBox->addKey("95% Point Confidence", 0x8066ff66);
// Display the trend line parameters as a text table formatted using CDML
sprintf(buffer,
"<*block*>Slope\nIntercept\nCorrelation\nStd Error<*/*> <*block*>%.4f "
"sec/tps\n%.4f sec\n%.4f\n%.4f sec<*/*>", trendLayer->getSlope(),
trendLayer->getIntercept(), trendLayer->getCorrelation(),
trendLayer->getStdError());
TextBox *textbox = c->addText(56, 65, buffer, "arialbd.ttf", 8);
// Set the background of the text box to light grey, with a black border, and 1
// pixel 3D border
textbox->setBackground(0xc0c0c0, 0, 1);
// Output the chart
c->makeChart("confidenceband.png");
//free up resources
delete c;
return 0;
}