How to convert cell to double array?

Question

Gil Cheah 2017-7-19

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回答： Philipp Prestel 2023-6-24

My data is with size of 2050x1 and its class label as 'cell', how do convert it into double so that i can plot the graph? thanks for the help in advance

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Answer 1

Geoff Hayes 2017-7-19

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Gil - is each element of your cell array a numeric scalar or numeric array? See cell2mat which provides some examples on how you might do this conversion.

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Answer 2

Damdae 2019-7-27

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在 MATLAB Online 中打开

Try str2double:

cell2mat({'01'}) = '01' (double)
str2double({'01'}) = 1  (char)

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Giuseppe Degan Di Dieco 2021-11-29

Thanks Damdae, very useful tip to convert

cell array, containg numbers, to double.

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Answer 3

Philipp Prestel 2023-6-24

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The absolute easiest way I know is comma seperated list assignment, which looks like this;

a = [{25}; {31}; {24}; {5}; {23}; {64}; {12}; {53}; {22}];
b = [a{:}]'
b = 9×1
    25
    31
    24
     5
    23
    64
    12
    53
    22

I don't know whrether it is any good, but it works if the values of all cells are of the same type. just keep in mind that it will transpose a columnvector to a rowvector.