fwrite

Write data in binary form to the file specified by the file descriptor fid.

Syntax

• count = fwrite(fid, data)
• count = fwrite(fid, data, precision)
• count = fwrite(fid, data, precision, skip)
• count = fwrite(fid, data, precision, skip, arch)
• count = fwrite(fid, data, precision, arch)

Input argument

• fid - a file descriptor
• data - data to write
• precision - class of values to read
• skip - number of bytes to skip
• arch - a string specifying the data format for the file.

Output argument

• count - -1 or number of elements written

Description

Write data in binary form to the file specified by the file descriptor fid.

characters encoding uses fopen parameter.

supported architecture:

native , n: format of the current machine.

ieee-be, b: IEEE big endian.

ieee-le, l: IEEE little endian.

Example

A = rand(3,1)

fileID = fopen([tempdir(), 'doubledata.bin'],'w');
fwrite(fileID, A,'double');
fclose(fileID);

fileID = fopen([tempdir(), 'doubledata.bin'],'r');
R = fread(fileID, 'double')
fclose(fileID);

See also

fopen, fclose, fread.

History

Author

Allan CORNET