Reading vector elements into a string

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Morten Nissov
Morten Nissov on 23 Jul 2020
Commented: Walter Roberson on 23 Jul 2020
I have a vector of numbers that I would like to use to create a filename. For example with a vector [1] I would like the filename temp0001.file. This is simply done by
filename = sprintf('%04d', vector);
This doesn't carry over once I append more elemnts to the matrix, for example [1,2] should result in temp0012.file but instead becomes temp0102.file. Is there another way to parse the vectors?
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Morten Nissov
Morten Nissov on 23 Jul 2020
Sorry I have assumed the contents of the vector are integers >-1 and <10

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Answers (2)

Walter Roberson
Walter Roberson on 23 Jul 2020
temp = sprintf('%d', [0 0 0 0, vector]);
temp = temp(end-3:end);
filename = sprintf('temp%s.file', temp);
  1 Comment
Walter Roberson
Walter Roberson on 23 Jul 2020
filename = sprintf('temp%04d.file', sum(vector .* 10.^(length(vector)-1:-1:0)));

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KSSV
KSSV on 23 Jul 2020
n = [1 2] ; % your vector
v = sprintf('%.0f' , n) ; % convert n to char
filename = sprintf('%04d',str2num(v));

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