Question about the 'interp2' function

Hi,

I have a question about the 'interp2' function in MATLAB. It looks like this :

Zi = interp2(X,Y,Z,Xi,Yi). Let's say X is (m x 1) and Y is (n x 1). Now in general, Z would have (m x n) data points. But they can be arranged in either or (m x n) or (n x m) format. From my understanding, 'interp2' seems to expect Z to be in (n x m) and gives an error if we had specified Z as (m x n).

For example, let's say Y is (3 x 1) and X is (2 x 1), then 'interp2' expects Z to be (3 x 2) and gives an error if it is (2 x 3). Is my observation correct? Also, is there a specific reason why it is so?

Thanks yogesh

Answer 1

[Walter Roberson]

See http://www.mathworks.com/help/matlab/release-notes.html#btwcr8z-1

You should be phasing out that kind of code.

If you provide X and Y grids instead of vectors you can use whichever orientation you prefer.

Why choose that order? Because some order had to be chosen.