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csvwrite

Write comma-separated value file

Syntax

csvwrite(filename,M)
csvwrite(filename,M,row,col)

Description

csvwrite(filename,M) writes matrix M into filename as comma-separated values. The filename input is a string enclosed in single quotes.

csvwrite(filename,M,row,col) writes matrix M into filename starting at the specified row and column offset. The row and column arguments are zero based, so that row=0 and C=0 specify the first value in the file.

Examples

The following example creates a comma-separated value file from the matrix m.

m = [3 6 9 12 15; 5 10 15 20 25; ...
     7 14 21 28 35; 11 22 33 44 55];

csvwrite('csvlist.dat',m)
type csvlist.dat

3,6,9,12,15
5,10,15,20,25
7,14,21,28,35
11,22,33,44,55

The next example writes the matrix to the file, starting at a column offset of 2.

csvwrite('csvlist.dat',m,0,2)
type csvlist.dat

,,3,6,9,12,15
,,5,10,15,20,25
,,7,14,21,28,35
,,11,22,33,44,55

More About

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Tips

  • csvwrite terminates each line with a line feed character and no carriage return.

  • csvwrite writes a maximum of five significant digits. If you need greater precision, use dlmwrite with a precision argument.

  • csvwrite does not accept cell arrays for the input matrix M. To export a cell array that contains only numeric data, use cell2mat to convert the cell array to a numeric matrix before calling csvwrite. To export cell arrays with mixed alphabetic and numeric data, where each cell contains a single element, you can create an Excel® spreadsheet (if your system has Excel installed) using xlswrite. For all other cases, you must use low-level export functions to write your data. For more information, see Export Cell Array to Text File in the MATLAB® Data Import and Export documentation.

See Also

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