Error using ==> horzcat CAT arguments dimensions are not consistent. help please......

Hi, I am getting this error

??? Error using ==> horzcat CAT arguments dimensions are not consistent.

Could anyone please suggest how to resolve the same.

This is the program i have made.

    % code
original=imread('rain.jpg');
a=double(rgb2gray(original));
%global typeDEC
level=2;w='db2';
[cA,cH,cV,cD]=lwt2(eka,w,level,'wp',typeDEC);
figure;imshow([cA,cH;cV,cD]);

Answer 1

[Matt Fig]

The dimensions of cA and cH or cV and cD do not match up. Look at the output of this:

whos cA cH cV cD