MATLAB Function Reference (Volume 2: Graphics)

contourRemarksExamplesIf you do not specify LineSpec, colormap and caxis control the color.If X or Y is irregularly spaced, contour calculates contours using a regularlyspaced contour grid, then transforms the data to X or Y.To view a contour plot of the functionz = xe( – x2 – y 2 )over the range –2 ≤ x ≤ 2, –2 ≤ y ≤ 3, create matrix Z using the statements[X,Y] = meshgrid(–2:.2:2,–2:.2:3);Z = X.∗exp(–X.^2–Y.^2);Then, generate a contour plot of Z.[C,h] = contour(X,Y,Z);clabel(C,h)colormap cool32.521.51−0.10.10.50−0.5−1−0.2−0.3−0.1−0.2−0.10 00.10.20.30.40.20.1−1.5−2−2 −1.5 −1 −0.5 0 0.5 1 1.5 22-101