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})
