Re: progress meter for long operations

[Jonathan C. Webster]

"John W. Eaton" wrote:

> On 25-Jun-2001, Jonathan C. Webster <address@hidden> wrote:
>
> | > does anyone have a good method for announcing progress on long 
> operations? i
> | > tried putting a printf in a for loop, but it didn't print a thing out 
> until
> | > it was done,
> |
> | Use unbuffered writes to a log file and  then watch that.  (tail -f  
> stuff.log
> | )
> | I use code like the following, where FID is the filehandel of your log file.
> |
> | str1 = sprintf("Blah Blah %d  %f  \n", var1, var2 );
> | fputs(FID,str1);
>
> I'm pretty sure fputs is normally buffered, unless you happen to have
> set the buffering mode on FID to unbuffered, or that has already been
> done for you (stderr, for example).
>
> Probably what you want is fflush, or to check out Octave's built-in
> variables page_screen_output and page_output_immediately.
>
> jwe

I use the above  coding for this purpose often   using  Octave, version 2.0.14
(i386-redhat-linux-gnu).

and

FID = fopen( "debug.log", "w");

Jonathan



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