#include "chartdir.h"
int main(int argc, char *argv[])
{
// The data for the 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};
// The labels for the bottom x axis. Note the "-" means a minor tick.
const char *labels0[] = {"0\nJun 4", "1", "2", "3", "4", "5", "6", "7", "8", "9",
"10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22",
"23", "0\nJun 5"};
// The labels for the top x axis. Note that "-" means a minor tick.
const char *labels1[] = {"Jun 3\n12", "13", "14", "15", "16", "17", "18", "19",
"20", "21", "22", "23", "Jun 4\n0", "1", "2", "3", "4", "5", "6", "7", "8",
"9", "10", "11", "12"};
// Create a XYChart object of size 310 x 310 pixels
XYChart *c = new XYChart(310, 310);
// Set the plotarea at (50, 50) and of size 200 x 200 pixels
c->setPlotArea(50, 50, 200, 200);
// Add a title to the primary (left) y axis
c->yAxis()->setTitle("US Dollars");
// Set the tick length to -4 pixels (-ve means ticks inside the plot area)
c->yAxis()->setTickLength(-4);
// Add a title to the secondary (right) y axis
c->yAxis2()->setTitle("HK Dollars (1 USD = 7.8 HKD)");
// Set the tick length to -4 pixels (-ve means ticks inside the plot area)
c->yAxis2()->setTickLength(-4);
// Synchronize the y-axis such that y2 = 7.8 x y1
c->syncYAxis(7.8);
// Add a title to the bottom x axis
c->xAxis()->setTitle("Hong Kong Time");
// Set the labels on the x axis.
c->xAxis()->setLabels(StringArray(labels0, sizeof(labels0)/sizeof(labels0[0])));
// Display 1 out of 3 labels on the x-axis. Show minor ticks for remaining
// labels.
c->xAxis()->setLabelStep(3, 1);
// Set the major tick length to -4 pixels and minor tick length to -2 pixels (-ve
// means ticks inside the plot area)
c->xAxis()->setTickLength(-4, -2);
// Set the distance between the axis labels and the axis to 6 pixels
c->xAxis()->setLabelGap(6);
// Add a title to the top x-axis
c->xAxis2()->setTitle("New York Time");
// Set the labels on the x axis.
c->xAxis2()->setLabels(StringArray(labels1, sizeof(labels1)/sizeof(labels1[0])));
// Display 1 out of 3 labels on the x-axis. Show minor ticks for remaining
// labels.
c->xAxis2()->setLabelStep(3, 1);
// Set the major tick length to -4 pixels and minor tick length to -2 pixels (-ve
// means ticks inside the plot area)
c->xAxis2()->setTickLength(-4, -2);
// Set the distance between the axis labels and the axis to 6 pixels
c->xAxis2()->setLabelGap(6);
// Add a line layer to the chart with a line width of 2 pixels
c->addLineLayer(DoubleArray(data0, sizeof(data0)/sizeof(data0[0])), -1,
"Red Transactions")->setLineWidth(2);
// Add an area layer to the chart with no area boundary line
c->addAreaLayer(DoubleArray(data1, sizeof(data1)/sizeof(data1[0])), -1,
"Green Transactions")->setLineWidth(0);
// output the chart
c->makeChart("dualxaxis.png");
//free up resources
delete c;
return 0;
} |