MATLAB: Maximum variable size allowed by the program is exceeded.

MATLAB

i tried this A =reshape( (zeros(vsize*vsize*2)),[],2); but getting Error using zeros Maximum variable size allowed by the program is exceeded. but when i tried A= reshape( (blanks(vsize*vsize*2)),[],2); is fine here vsize is 256

Best Answer

blanks(vsize*vsize*2) creates a 1 x vsize*vsize*2 vector of characters.

zeros(vsize*vsize*2) creates a vsize*vsize*2 by vsize*vsize*2 array of double precision numbers. If you want a vector instead then you need to specify the "1", such as zeros(1,vsize*vsize*2)

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MATLAB: Maximum variable size allowed by the program is exceeded.

I have the vague impression that you're trying to do this:

     [M,N,P]=size(gradscalex);
     [mm,nn]=ndgrid(1:M,1:N);  %pre-compute once!!
     maxgrad=sqrt(double(gradscalex.*gradscalex+gradscaley.*gradscaley));
     [~, gidx]=max(maxgrad,[],3);
     idx=sub2ind([M,N,P],mm(:),nn(:),gidx(:));
     gxtemp=reshape( gradscalex(idx)  ,[M,N]);
     gytemp=reshape( gradscaley(idx)  ,[M,N]);

MATLAB: Maximum variable size allowed by the program is exceeded.

The maximum variable size depends on your OS and MATLAB version. Assuming a recent 64-bit OS and 64-bit MATLAB, the maximum variable size (~8 TB) is such that you probably don't have enough processing power to do anything with it effectively. For 32-bit systems and some older 64-bit systems you might actually have the processing power to use such a large matrix and could benefit from a OS/MATLAB upgrade.

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MATLAB: Maximum variable size allowed by the program is exceeded.

MATLAB: Maximum variable size allowed by the program is exceeded.

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