Re: [Gnuplot-info] PNG plots very slow when gnuplot is compiled with WXT terminal

[Tatsuro M. <tma...@ya...>]

Hello

Perhaps your gnuplot 4.2.5 makes png files by the gd libraries.
While the wxt uses the cairo + pango libraries.

Roughly speaking, the gd gives light graphic handling, while the cairo + pango gives 
sophisticated, and beautififul (antialiasing etcs.) graphic handling but they use more machine
resources than those used by the gd.

However, the speed of wxt terminal are determined by a lot of factors.

You should reveal builiding condition of your gnuplot with wxt terminal in detail.
(Kinf of OS, do you use wxGTK, wxX11, etcs) 

Regards

Tatsuro

--- RM07  wrote:

> 
> I have an application which creates small PNG plots (2K - 6K in filesize) in
> pseudo-realtime.
> 
> On a non-WXT compiled gnuplot (4.2.5) these plots generate in ~100ms.
> 
> On a WXT compiled gnuplot (4.2.6 & 4.4.0) these plots take at least twice as
> long to generate (>200ms).
> 
> For me, 100ms is borderline acceptable.  200ms is not.  However, my app also
> has an interactive mode, so I would much prefer using a WXT terminal for
> zooming because of its better UI...
> 
> Is there any known reason why a wX-widgets compiled gnuplot is 2x slower
> when displaying PNG files?  Is there any way to fix this?
> 
> Thanks,
> RM
> -- 
> View this message in context:
>
http://old.nabble.com/PNG-plots-very-slow-when-gnuplot-is-compiled-with-WXT-terminal-tp28431250p28431250.html
> Sent from the Gnuplot - User mailing list archive at Nabble.com.
> 
> 
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