MATLAB Function Reference Volume 1: A - E - Bad Request

contour
Remarks If you do not specify LineSpec, colormap and caxis control the color.
2-312
If X or Y is irregularly spaced, contour calculates contours using a regularly
spaced contour grid, then transforms the data to X or Y.
Examples To view a contour plot of the function
z xe x2 y2 = ( – – )
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 cool
3
2.5
2
1.5
1
0.5
0
−0.5
−1
−1.5
−0.1
−0.2
−0.3
−0.1
−0.2
−0.1
−2
−2 −1.5 −1 −0.5 0 0.5 1 1.5 2
0 0
0.1
0.2
0.3
View the same function over the same range with 20 evenly spaced contour
lines and colored with the default colormap jet.
0.1
0.4
0.2
0.1