Converting a table of mixed numeric-string content to an array

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z8080
z8080 2019-5-13
评论： Peter Perkins 2019-5-14
I have a table with mixed numeric&string content:
M =
rep file condition corrAns
___ __________________ _________ _______
1 'stimuli/03C1.wav' 'C1' 2
1 'stimuli/03C4.wav' 'C4' 1
......................
I'd like to convert M to an array, so as to be able to save it as a spreadsheet using xlswrite, which requires an array as input.
However, the command
table2array(M)
gives the error
Cannot concatenate the table variables 'rep' and 'file', because their types are double and cell.
I tried converting the first and final columns from double to cell using
M(:,1) = table2cell(M(:,1))
or even
for i_row=1:row_N
M(i_row,1) = num2cell(M(i_row,1));
M(i_row,4) = num2cell(M(i_row,4));
end
but both of these conversions lead to the same error. Any suggestions?

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采纳的回答

Adam Danz
Adam Danz 2019-5-13
编辑：Adam Danz 2019-5-13
Change non-cells to cells and then convert.
M.rep = num2cell(M.rep);
M.corrAns = num2cell(M.corrAns);
table2array(M)

更多回答（1 个）

Steven Lord
Steven Lord 2019-5-13
I recommend using writetable instead of using xlswrite. You can tell writetable to write to a spreadsheet file.
  1 个评论
Peter Perkins
Peter Perkins 2019-5-14
What Steve said. writetable is a much better choice.
It also looks like Condition could usefully be converted to categorical, depending on what you're doing with it.

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