Multiplication of cell arrays

hey

i have following four cell arrays(2x7 cell). i want to multiply all four. Like cell1 of a with cell 1 of b,c,d and same for all cells.

    a = {[],[0.13,0.13],1.13,[0.13,0.1,1.13],[0.13,1.1,0.13],[],[];  [],[],[-1.72,-0.72,1.2],0.27,[],[0.27,1.2],[-1.7,0.2,-0.7,1.28]}
   b= {[],[-0.4,-0.4],-0.2,[-0.4,-0.4,1.8],[-1.28,-1.2,0.78],[],[];  [],[],[-2.2,-1.2,0.7],0.5,[],[-0.09,-1.0],[-0.31,0.6,-2.3,1.6]}
   c= {[],[1,1],1,[1,1,1],[1,1,1],[],[];  [],[],[1,1,1],1,[],[1,1],[1,1,1,1]}
   d= {[],[1,1],1,[1,1,1],[1,1,1],[],[];  [],[],[1,1,1],1,[],[1,1],[1,1,1,1]}

I have used:

for x=1:2
   for y=1:7
         mul{x,y}=cellfun(@(x,y,z,s) x.*y.*z.*s, a{x,y},b{x,y},c{x,y},d{x,y},'UniformOutput', false);
   end
end

which gives following error:

Input #2 expected to be a cell array, was double instead.

Also these arrays doesn't only contain two rows.

kindly help

Answer 1

[Jan]

cellfun is smart, but harder to debug than a simple loop.

mul = cell(2, 7);
for x=1:2
   for y=1:7
     mul{x,y} = a{x,y} .* b{x,y} .* c{x,y} .* d{x,y};
   end
end

Does this work? I assume if fails with the same error. Then use the debugger:

dbstop if error

Run the code again until it stops at the error. Now check the sizes:

size(a{x,y})
size(b{x,y})
size(c{x,y})
size(d{x,y})

[lucksBi]

yea dbstop helped. Thank You

Answer 2

[Walter Roberson]

Remove the loop.

mul = cellfun(@(x,y,z,s) x.*y.*z.*s, a, b, c, d, 'uniform', 0);

[lucksBi]

ThankYou. It works fine of two rows but on matrix of 8x7 it gives following error:

All of the input arguments must be of the same size and shape. Previous inputs had size 1 in dimension 1. Input #3 has size 8