store char in a column matrix

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Alberto Acri 2023-6-18

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评论： Rik 2023-6-18

采纳的回答： Rik

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Hi. I have a for loop that generates char like this: 'parameter_1' ('parameter_2' and so on).

I would like to store them all in a matrix M. Then have on the workspace something like this:

M = [parameter_1;
     parameter_2;
     ...]

Is there an easy way to do this?

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Answer 1

Rik 2023-6-18

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If you use a cell array instead, the parameters don't need to have the same number of characters. That will also make it easy to convert the a string and back, should you ever need to.

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Steven Lord 2023-6-18

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If you don't need them as char arrays, I recommend using a string array instead of a cell array containing char arrays. You can even vectorize the creation of the text data using the + operator for strings.

n = (1:5).'
n = 5×1
     1
     2
     3
     4
     5
s = "parameter_" + n.^2
s = 5×1 string array
    "parameter_1"
    "parameter_4"
    "parameter_9"
    "parameter_16"
    "parameter_25"
check = s(4) % should be "parameter_16"
check = "parameter_16"

Rik 2023-6-18

Just to add the final point: if you are using cells you need to use {} to access the content, otherwise you're dealing with the container (i.e. the cell element).

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