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Member of the support class.

Syntax

c = fwrite(fid, a)

c = fwrite(fid, a, type)

c = fwrite(fid, a, type, s)

Description

Writes binary data to a file.

Examples

Inputs

Name	Description
fid	Specifies the identifier for the file to which you want to write. Use the fopen function to open a file and assign it an identifier. fid is an integer.
a	Specifies the data you want to write to the file specified by fid. a is a vector or matrix.
type	Specifies the data type of a that you want to write to the file specified by fid. If you specify s, you can add a positive integer of the form 'm*' before type. LabVIEW then skips s bytes before each m bytes it writes to the file. type is a string that accepts the following values. 'double' Writes 64-bit, double-precision, floating-point numbers. 'float32' Writes 32-bit, single-precision, floating-point numbers. 'float64' Writes 64-bit, double-precision, floating-point numbers. 'int16' Writes 16-bit signed integers. 'int32' Writes 32-bit signed integers. 'int64' Writes 64-bit signed integers. 'int8' Writes 8-bit signed integers. 'schar' Writes signed characters. 'single' Writes 32-bit, single-precision, floating-point numbers. 'uchar' (default) Writes unsigned characters. 'uint16' Writes 16-bit unsigned integers. 'uint32' Writes 32-bit unsigned integers. 'uint64' Writes 64-bit unsigned integers. 'uint8' Writes 8-bit unsigned integers.
s	Specifies the number of bytes to skip before each m bytes as you specify in type. s is a positive integer.

Outputs

Name	Description
c	Returns the amount of data that LabVIEW wrote successfully to the file specified by fid. c is a positive integer.

Examples

fid = fopen('test.dat', 'w');
a = [-0.1, 0, 0.1; -0.2, 0.1, 0.4];
c = fwrite(fid, a, '4*float32', 2);
fclose(fid);

Related Topics

fclose
fopen
fread
fseek