How to construct a cell of arrays from an array of arrays?

Question

hadi 2015-4-12

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https://ww2.mathworks.cn/matlabcentral/answers/197859-how-to-construct-a-cell-of-arrays-from-an-array-of-arrays

评论： hadi 2015-4-13

采纳的回答： Star Strider

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Dear all,

I have the following code, and I want to make a cell of arrays from an array of arrays, but I have an error.

The Code:

clc

clear all

close all

for i=1:2

p{i}=[2^i-1 2^(i)];

end

p

Cell={};

for i =1:max(size(p))

Cell(1,i)=p{i};

end

Cell

The error:

??? Conversion to cell from double is not possible.

Error in ==> Untitled5 at 11

Cell(1,i)=p{i};

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Answer 1

Star Strider 2015-4-12

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You’re almost there!

Use:

Cell{i}=p{i};

instead, and it works.

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hadi 2015-4-12

Thank you very much, I appreciate your help.

Star Strider 2015-4-12

My pleasure.

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Answer 2

Image Analyst 2015-4-12

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You'd be better off dealing with a regular 2D array. Why mess around with the complications of a cell array when you don't have to.

Even if you did want to have a cell array that was a copy of p, you could just avoid the loop in the first place and just do

Cell = p;

since you're simply setting the ith cell of Cell to the ith cell of p. Though, again, a regular 2D non-cell numerical array will be the simplest by far and you never have to worry about whether to use braces or parentheses or brackets.

By the way, you can use length(p) instead of max(size(p)). And it might not be a good idea to call your cell array Cell. One typo and it becomes cell which is a built-in function.