construc a string from other strings and variables

Question

Jeff Eriksen 2014-2-10

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https://ww2.mathworks.cn/matlabcentral/answers/115598-construc-a-string-from-other-strings-and-variables

编辑： per isakson 2014-2-11

I am just trying to construct a single string to use as a file name, from several other strings and variables. Should be simple, but I cannot get the syntax right. For example:

subj = 'A2';
ndip = '2503';
nroi = '68';
band = '2-4';
fil_nam = [subj '_b' band '_d' ndip '_s' nroi];

fil_nam is created as a cell array, so how do I force it to be a string? Or convert to string?

Thanks

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Walter Roberson 2014-2-10

Please re-check your actual code to see if you possibly used {} instead of [] ?

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Answer 1

Azzi Abdelmalek 2014-2-10

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https://ww2.mathworks.cn/matlabcentral/answers/115598-construc-a-string-from-other-strings-and-variables#answer_123904

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If fil_nam is a cell array

fil_nam = {subj '_b' band '_d' ndip '_s' nroi}
out=strjoin(fil_nam)

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Walter Roberson 2014-2-10

在 MATLAB Online 中打开

strjoin() puts a space between the parts by default. You can specify '' as the delimiter to avoid the space. If you are going to do that then you might as well use

out = cat(2, fil_name{:});