How show variable number of cell's array in a message box?

Question

Mahdi 2015-3-5

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https://ww2.mathworks.cn/matlabcentral/answers/181707-how-show-variable-number-of-cell-s-array-in-a-message-box

评论： Mahdi 2015-3-6

Hi everyone,

I want a cell, which includes every time (depend on calculation) different number of array. It means, depend on calculation the number of arrays could be 2 or 3 etc. Now I want to show the content of this cell in a message box. I have written the following:

%X_AP_Name is the cell with variable number of arrays

msgbox(sprintf('Please insert *.txt-data of %s in folder sample',X_AP_Name{:}))

but the text before and after arrays of cell is repeated according to number of arrays. If for example Size(X_AP_Name)=2, it result in following text: "Please insert *.txt-data of A in folder samplePlease insert *.txt-data of B in folder sample"

But i want to have "Please insert *.txt-data of A and B in folder sample"

what should I do?!

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Answer 1

Guillaume 2015-3-5

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A simple way is to use strjoin on your cell array of strings:

msgbox(sprintf('Please insert *.txt-data of %s in folder sample', strjoin(AP_Name, ' and ')));

You could make something a bit more advanced to make the sentence look nicer, like:

function filestring = buildfilestring(filenames)
   %filenames: a cell array of string
   if numel(filenames) > 2
      filestring  = sprintf('%s and %s', strjoin(filenames(1:end-1), ', '), filenames{end});
   else
      filestring = strjoin(filenames, ' and ');
   end
end