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Extract all columns from a table where the column names "start with" a string

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How can I extract all columns from a table where the column names "start with" a string?
For example, in
mytable = array2table(NaN(4,5));
mytable.Properties.VariableNames = {'A1', 'A2', 'B1', 'F2', 'F4'};
How would I extract all the "F*" columns in to a new table?

Accepted Answer

Walter Roberson
Walter Roberson on 28 Aug 2019
mask = startsWith( mytable.Properties.VariableNames, 'F');
Fcols = mytable(:,mask);

More Answers (1)

Arnaud Delorme
Arnaud Delorme on 27 May 2022
Edited: Arnaud Delorme on 27 May 2022
colNames = fieldnames(mytable);
[~,inds] = intersect(colNames, { 'A1' 'A2' } );
mytable = mytable(:,sort(inds));
  1 Comment
Walter Roberson
Walter Roberson on 27 May 2022
This would not get you anything that mytable(:, { 'A1' 'A2' } ) would not give, other than preserving relative order of variables.

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