Writing Matrix to a Text File

b = FWrite(fid,M,[delimeter], [format])

Writes matrix contents into a file, separating each column by the specified delimiter.

Option	Description
fid	Handle to an opened file to which the matrix is to be written.
M	The matrix whose content is to be written.
delimiter	An optional string specifying the delimiter. Defaults to space delimited. This must be specified if the output format is also specified.
format	An optional string specifying the C-style format. The supported format is described below. The default format is "%0.5g".
b	A Boolean. True (1) on success.

The format string has the form:

% [width] [.precision]type

Option	Description
type	A required character field that specifies how the associated argument is to be interpreted. The options include a character, string, or number. It can be any of the following:
	f	Double precision.
	e	Double precision in exponential notation.
	g	Double or exponential notation, depending on the magnitude.
width	An optional integer that pads the output with leading spaces so that it is at least the width number of characters wide.
precision	An optional integer. For %f and %e, it causes the decimal portion of the output to be expressed in at least precision digits. For %g, it causes the maximum number of significant digits to be this precision.

fid = Open(‘c:/test.txt’,’w’) // Open a file in write mode

M = [1,2;3,4];

FWrite(fid,M,",", "%1.0e"); // Writes the matrix separating each column by a comma in exponential format

Close(fid); // close the file