Subtraction between two imagesc plots with different resolutions

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Benyamin Nemati 2020-10-3

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https://ww2.mathworks.cn/matlabcentral/answers/604390-subtraction-between-two-imagesc-plots-with-different-resolutions

编辑： Benyamin Nemati 2020-10-3

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.

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Image Analyst 2020-10-3

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 2020-10-3

编辑：Benyamin Nemati 2020-10-3

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.

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