Multiply two cell arrays

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lucksBi
lucksBi 2018-2-28
评论： Stephen23 2018-2-28
Hi i have following two cell arrays mul1 and mul2.
I want to multiply each cell of mul1 with corresponding cell of mul2. I am using following code
for i=8
for j=7
mul3{i,j}= mul1{i,j}.*mul2{i,j};
end
end
but it gives error:
Error using .*
Matrix dimensions must agree.
i also tried without using loop but still same issue.
Please help
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lucksBi
lucksBi 2018-2-28
yes you are right. It multiplies values within cells which are numeric values. Size of mul1 is 8x7 cell and mul2 is 8x7 cell.
Result of size is:
for i=1:8
for j=1:7
a= size(mul1{i,j})
b= size(mul2{i,j})
mul3{i,j}= mul1{i,j}.*mul2{i,j};
end
end
Result:
a = 1 0
b = 0 0
Stephen23
Stephen23 2018-2-28
lucksBi: I did not ask you for the size of mul1 or mul2. Please read my comment again.

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Birdman
Birdman 2018-2-28
Try this:
res=cellfun(@times,mul1,mul2,'uni',0)
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Andrei Bobrov
Andrei Bobrov 2018-2-28
编辑：Andrei Bobrov 2018-2-28
@lucksBi: All right!
>> mul1
mul1 =
8×7 cell array
[1×0 double] [ -0.1140] [ -0.2700] [1×2 double] [1×2 double] [] []
[1×0 double] [1×0 double] [1×3 double] [ 0.1967] [1×0 double] [1×2 double] [1×4 double]
[ -0.1140] [1×0 double] [1×0 double] [1×3 double] [1×2 double] [1×0 double] [1×3 double]
[ -0.2700] [1×3 double] [1×0 double] [1×0 double] [ 0.2598] [ -0.8066] [1×3 double]
[1×2 double] [ 0.1967] [1×3 double] [1×0 double] [1×2 double] [ -0.0151] [1×4 double]
[1×2 double] [1×0 double] [1×2 double] [ 0.2598] [1×2 double] [1×0 double] [1×2 double]
[1×0 double] [1×2 double] [1×0 double] [ -0.8066] [ -0.0151] [1×0 double] [1×2 double]
[ -0.0974] [1×4 double] [1×3 double] [1×3 double] [1×4 double] [1×2 double] [1×2 double]
>> mul2
mul2 =
8×7 cell array
[] [ 1] [ 1] [1×2 double] [1×2 double] [] []
[] [] [1×3 double] [ 1] [] [1×2 double] [1×4 double]
[ 1] [] [] [1×3 double] [1×2 double] [] [1×3 double]
[ 1] [1×3 double] [] [] [ 1] [ 1] [1×3 double]
[1×2 double] [ 1] [1×3 double] [] [1×2 double] [ 1] [1×4 double]
[1×2 double] [] [1×2 double] [ 1] [1×2 double] [] [1×2 double]
[] [1×2 double] [] [ 1] [ 1] [] [1×2 double]
[ 1] [1×4 double] [1×3 double] [1×3 double] [1×4 double] [1×2 double] [1×2 double]
>> cellfun(@times,mul1,mul2,'un',0)
ans =
8×7 cell array
[] [ -0.1140] [ -0.2700] [1×2 double] [1×2 double] [] []
[] [] [1×3 double] [ 0.1967] [] [1×2 double] [1×4 double]
[ -0.1140] [] [] [1×3 double] [1×2 double] [] [1×3 double]
[ -0.2700] [1×3 double] [] [] [ 0.2598] [ -0.8066] [1×3 double]
[1×2 double] [ 0.1967] [1×3 double] [] [1×2 double] [ -0.0151] [1×4 double]
[1×2 double] [] [1×2 double] [ 0.2598] [1×2 double] [] [1×2 double]
[] [1×2 double] [] [ -0.8066] [ -0.0151] [] [1×2 double]
[ -0.0974] [1×4 double] [1×3 double] [1×3 double] [1×4 double] [1×2 double] [1×2 double]
>>
Birdman
Birdman 2018-2-28
It should not. It worked for me.

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