matlab contour levels

In MATLAB, contour levels refer to the values used to draw the contours of a 2D function. These levels are specified as a vector of increasing values, and each contour line represents a constant value of the function.

To specify the contour levels in MATLAB, you can use the 'LevelList' property of the 'contour' function. For example, to draw contours at levels 0.5, 1, 1.5, and 2, you can use the following code:

[X,Y,Z] = peaks(25); % example function
contour(X,Y,Z,'LevelList',[0.5 1 1.5 2])

This will draw four contour lines corresponding to the function values of 0.5, 1, 1.5, and 2.