FreeMat
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Section: Input/Ouput Functions
The csvwrite
function writes a given matrix to a text file using comma separated value (CSV) notation. Note that you can create CSV files with arbitrary sized matrices, but that csvread
has limits on line length. If you need to reliably read and write large matrices, use rawwrite
and rawread
respectively. The syntax for csvwrite
is
csvwrite('filename',x)
where x
is a numeric array. The contents of x
are written to filename
as comma-separated values. You can also specify a row and column offset to csvwrite
to force csvwrite
to write the matrix x
starting at the specified location in the file. This syntax of the function is
csvwrite('filename',x,startrow,startcol)
where startrow
and startcol
are the offsets in zero-based indexing.
Here we create a simple matrix, and write it to a CSV file
--> x = [1,2,3;5,6,7] x = 1 2 3 5 6 7 --> csvwrite('csvwrite.csv',x) --> csvread('csvwrite.csv') ans = 1 2 3 5 6 7
Next, we do the same with an offset.
--> csvwrite('csvwrite.csv',x,1,2) --> csvread('csvwrite.csv') ans = 0 0 0 0 0 1 2 3 0 5 6 7
Note the extra zeros.