How do I convert double to cellstr?

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Dominic Noel Kluck 2024-1-22

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https://ww2.mathworks.cn/matlabcentral/answers/2072716-how-do-i-convert-double-to-cellstr

回答： Sai Teja G 2024-1-22

I have a vector which coul look like this: A = [2 25 1017]. I want to use these numbers in a legend of my plot. Apparently I need to convert them from double into cellstr. Thats what I get out of the error message: Cell array argument must be a cell array of character vectors. How do I convert double into cellstr?

Thanks in advance

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Answer 1

Star Strider 2024-1-22

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Use the compose function (introduced in R2016b) —

A = [2 25 1017];
Ac = compose('%d',A)
Ac = 1×3 cell array
    {'2'}    {'25'}    {'1017'}

.

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Answer 2

Sai Teja G 2024-1-22

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Hi Dominic, You can refer to the below code to convert double to cell array.

A = [2 25 1017];
A_str = arrayfun(@(x) num2str(x), A, 'UniformOutput', false)
A_str = 1×3 cell array
    {'2'}    {'25'}    {'1017'}

This code snippet uses arrayfun to apply the num2str function to each element of the array A, converting each number to a string. The 'UniformOutput', false argument is used to output the results in a cell array, which is necessary for the legend function in MATLAB.