Subscripted assignment dimension mismatch

I have the following algorithm and i keep getting an error, can anyone help?

for i = 1:nSlice
    D1 = squeeze(IMs(:, :, i));
    range = double(max(D1(:)));
    norm_im = double(D1)/range;
    level = graythresh(norm_im); 
    new_level = level*c_range;
    BW = (D1>new_level);    
    IM_s(:,:,i) = BW(:); % error line
end

[Geoff]

Please edit your question and format the code as 'code' (highlight and press the 'code' button on the toolbar. Also, on which line does the error occur?

Answer 1

[Geoff]

When you reference BW(:), it turns your matrix into a vector. Just do this:

IM_s(:,:,i) = BW;

Assuming that IM_s(:,:,i) is actually the same dimension as IMs(:,:,i)...

[Mugo]

Thanks, it solved the error i was having but IMs and IM_s have different dimensions. So now i cant display IM_s like...

imagesc(IM_s(:,:,10));

[Geoff]

Well, if it got rid of the error, then the first two dimensions of IM_s and IMs must surely be the same. When you say you "can't display" IM_s(:,:,10), what do you mean? Does it give you an error, or just a solid colour?

[Mugo]

Oh my bad, they are the same dimensions but different sizes. size(IMs)= [512 512 34] and size(IM_s)=[2 2 34] so im getting a solid colour.

[Geoff]

So, don't you want them to be the same dimension? I see you have accepted my answer, but have you resolved your problem?

[Mugo]

Im happy with the solution to my initial error problem, but the dimension issue is a different thing im working on currently. I will post a new question if i cant figure it out. Thanks for your help...