Re: How to suppress unneeded output while using "save"

[Mike Miller]

On Tue, 6 Dec 2005 address@hidden wrote:

> Dear ladies and gentlemen!
> I use the command "save" to save  a matrix in a data-file. That works pretty
> well.
> But octave also writes the following information in this data-file:
>
> # Created by Octave 2.1.57, Sun Dec 04 12:37:37 2005
> # name: speedsc1
> # type: matrix
> # rows: 30
> # columns: 337
>
> How can I suppress this additional output?


Here's a perl script I wrote for removing header lines.  This overwrites 
files and can be used on collections of files using wildcard characters. 
Suppose you name this script "no_headers" then you could do things like 
this:

no_headers *.out outfiles/*


------------------------begin script on next line----------------------
#!/usr/bin/perl -i -p

# This removes the initial header lines of an octave ascii data file

BEGIN{undef $/} s/(# [^\n]*\n)+ / /
------------------------end script on previous line--------------------


Someone claimed that if you remove the header information, you cannot 
reload the matrix in Octave.  That depends.  If the file holds a single 
matrix, you can still use "load" to bring that matrix into Octave, but you 
will have to give it an appropriate name.

I assume that you want remove the header info because you want to import 
the data into a different program.

Mike



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