MATLAB: Does FWRITE fail to completely write out long vectors in MATLAB

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I am using FWRITE to write out a long vector of numbers over a network drive and it is not fully writing out the entire vector. Why is this?

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This bug has been fixed in Release 14 Service Pack 2 (R14SP2). For previous releases, please read below for any possible workarounds:

We have verified that there is a bug in MATLAB that affects the way that FWRITE handles writing large vectors to files on network drives. To work around this issue, divide up your writing into smaller portions. To accomplish this, you may use FWRITE in a WHILE loop over your data and write a block at a time.

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MATLAB: Fwrite

Hi Tor,

1) you save strings 2,4, not values (pass [2 4] instead of '2 4' to fwrite

2) you should pass the format ('double'), see fwrite doc

Titus

MATLAB: Fwrite to fread changes data completely!

This works for me on R2016a,Win7,64b. (Replacing real*8 by double doesn't change that.)

>> cssm( rand(1,1000) )
ans =
     1

where

function  ok = cssm( vec )
    fid = fopen( 'cssm.bin', 'w' );
    fwrite( fid, vec, 'real*8' );
    fclose( fid );
    fid = fopen( 'cssm.bin', 'r' );
    out = fread( fid, size(vec), 'real*8' );
    fclose( fid );
    ok = all(vec==out);
end

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MATLAB: Fwrite

MATLAB: Fwrite to fread changes data completely!

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