Re: Speeding Up gnuplot Interface with Binary Data

[Daniel J Sebald]

Dmitri A. Sergatskov wrote:
> On Tue, Oct 14, 2008 at 11:37 PM, John W. Eaton <address@hidden> wrote:
>
>
> > I think it would be better to use
> >
> > sprintf ("record=%d", numel (obj.xdata));
> >
> > instead.
>
>
> Both works for me. Just an observation: running
> tic; plot(rand(1000)); toc
>
> takes 2 seconds with 3.0.2 and 12 with 3.1.51+
>
> Of course, the gnuplot's time is the other way around,
> so we loosing time on formatting data into binary format and
> than win some back during the parsing.

Huh?  Binary should be faster on both sides.  fwrite() should be faster than 
fprint(), fread() faster than fscanf(), generally speaking.  How long ago is 
3.0.2?  What were the changes between those two versions?

Dan