Subtraction between two imagesc plots with different resolutions

Hi,

I have two similar world plots with different resolution, one of them is for example: imagesc(lambda-180,phi,EWT(:,:,1)), and the other is imagesc(Lon,Lat,Pre(:,:,1));

wich their values are as follow:

lambda = 1*360;

phi = 180*1;

EWT = 180*360*12;

Lon = 720*1;

Lat = 360*1;

Pre = 360*720*12;

i want to subtrace EWT from Pre and i dont know how to equalize them for this action,

i apperaciate if you could answer me please.

[Image Analyst]

You can't subtract matrices unless they're the same size. Do you want to make them the same size with imresize() or interp2()? Or do you have some other process you'd like to use?

[Benyamin Nemati]

I would like to interpolate one of the above plots but I don't know how to do that in correct way. For your consideration, one of them is the world meteorological data with 1° resolution and the other has 0.5° resolution.