
This example is the same as Simple Bar Chart (2), except that XYChart.addBarLayer3 is used to add a multi-color bar layer instead of a regular bar layer.
ChartDirector 6.0 (C++ Edition)
Multi-Color Bar Chart (1)
Source Code Listing
#include "chartdir.h" int main(int argc, char *argv[]) { // The data for the bar chart double data[] = {85, 156, 179, 211, 123, 189, 166}; // The labels for the bar chart const char *labels[] = {"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"}; // The colors for the bars int colors[] = {0x5588bb, 0x66bbbb, 0xaa6644, 0x99bb55, 0xee9944, 0x444466, 0xbb5555}; // Create a XYChart object of size 600 x 400 pixels XYChart *c = new XYChart(600, 400); // Add a title box using grey (0x555555) 24pt Arial font c->addTitle("Multi-Color Bar Chart", "arial.ttf", 24, 0x555555); // Set the plotarea at (70, 60) and of size 500 x 300 pixels, with transparent background and // border and light grey (0xcccccc) horizontal grid lines c->setPlotArea(70, 60, 500, 300, Chart::Transparent, -1, Chart::Transparent, 0xcccccc); // Set the x and y axis stems to transparent and the label font to 12pt Arial c->xAxis()->setColors(Chart::Transparent); c->yAxis()->setColors(Chart::Transparent); c->xAxis()->setLabelStyle("arial.ttf", 12); c->yAxis()->setLabelStyle("arial.ttf", 12); // Add a multi-color bar chart layer with transparent border using the given data c->addBarLayer(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))), IntArray(colors, (int)( sizeof(colors) / sizeof(colors[0]))))->setBorderColor(Chart::Transparent); // Set the labels on the x axis. c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0])))); // For the automatic y-axis labels, set the minimum spacing to 40 pixels. c->yAxis()->setTickDensity(40); // Add a title to the y axis using dark grey (0x555555) 14pt Arial font c->yAxis()->setTitle("Y-Axis Title Placeholder", "arial.ttf", 14, 0x555555); // Output the chart c->makeChart("colorbar.png"); //free up resources delete c; return 0; } |