#include <chplot.h> #include <math.h> int main() { array double x[20], y[20], z[400]; int datasetnum =0, i, j; class CPlot plot; linspace(x, -2, 2); linspace(y, -2, 2); for (i=0; i<20; i++) { for(j=0; j<20; j++) { z[i*20+j] = x[i]*exp(-x[i]*x[i]-y[j]*y[j]); } } plot.data3D(x, y, z); plot.changeViewAngle(0,0); plot.plotType(PLOT_PLOTTYPE_LINES, datasetnum); plot.contourMode(PLOT_CONTOUR_BASE); plot.showMesh(PLOT_OFF); plot.title("Contour plot"); plot.plotting(); }