variable H1 can not be classified in parfor-loop

 H1(subsizeX,subsizeY,(subnumX-1)*(subnumY-1))=zeros(subsizeX,subsizeY);
      parfor ii=1:(subnumX-1)*(subnumY-1)
          iiy=ceil(ii/subnumX);
          iix=ii-(iiy-1)*subnumX;
          i1=iix+(iiy-1)*(subnumX-1);
          i2=iix+(iiy-1)*subnumX;
          H1(subsizeX,subsizeY,i1)=HGroup(:,:,i2);
      end

[N/A]

I am not sure what the question is, but are you declaring H1 correct ?

It looks like

H1(dimension 1, dimension2, dimension 3)=zeros(dimension 1, dimension 2)

So there is simply a mismatch in dimensions.

[Novince]

Thanks anyway.The declaration seems OK, no errors reported.The following line comes with an error.

 H1(subsizeX,subsizeY,i1)=HGroup(:,:,i2);

Answer 1

[OCDER]

Take a read here for "sliced variables" https://www.mathworks.com/help/distcomp/sliced-variable.html

      parfor ii=1:(subnumX-1)*(subnumY-1)
          iiy = ceil(ii/subnumX);
          iix = ii-(iiy-1)*subnumX;
          i1 = iix+(iiy-1)*(subnumX-1);
          i2 = iix+(iiy-1)*subnumX;
          H1(subsizeX,subsizeY,i1)=HGroup(:,:,i2);  << CAN'T DO THIS. 

          % H1 must be accessed with respect to parfor counter variable, "ii". 
          % Example:
          %   H1{ii} = zeros(ii+1, ii); will work. H{ii} doesn't depend on H{ii+1} , etc.
          % Can't change the sliced variable index via a computation either, because then 
          % each parallel iteration may not always be independent.
          % Bad Example:
          %  H1(ii) = H1(ii+1); %Can't be used. H(ii) depends on H1(ii+1). Not independent for parfor.
          %

      end

[Novince]

Thanks, OCDER.I have read the documentations about the classification of variables in parfor loop,but I still don't know how to applly them to a matrix with 3 dimensions.It seems necessary in my code that the third index have to be computed from the loop variable,and I don't know how to deal with it.