how to plot an iso-line on pcolor graph

Hello, I have to vectors A(size 100) and D (size 100) and a matrix(100x100) in which I have all the value of a function T = f(A,D) for 100 value of A and 100 values of D. I plot a pcolor graph with :

pcolor(D,A,T)

and I'd like to draw an iso-line on this graph representing T = Tlim

Does anyone knows how to do that ?

Answer 1

[Walter Roberson]

hold on
contour(D, A, T, [Tlim Tlim]);
hold off

Using the same number twice is a "trick": if you had only given

contour(D, A, T, Tlim);

then it would try to interpret Tlim as the number of contours to draw.

[Marianne]

Thank you very much it works