Re: [Plplot-general] real-time plplot too slow

[Derek L. <de...@bo...>]

plshades is too slow for just about every imaginable real-world application, as far as I've been able to tell.  If memory serves correctly, even if you output to a PDF and open in your favorite reader, it will render incredibly slowly.  Inefficiencies in the way the color tables are calculated, I think.

So, this isn't really helpful, but I thought I'd let you know it's not just you.

http://sourceforge.net/p/plplot/bugs/105/

Derek

On Apr 15, 2014, at 6:46 AM, Owens, Thomas wrote:

> I have a real-time plotting application with multiple plots in one window that I would like to speed up some.  The code is
>  
> plspage(0,0,2000,430,0,0);
> plsdev(“xwin”);
> plsetopt(“drvopt”,”nobuffered=1”);
> plinit();
>  
> plssub(2,1);
>  
> while(1){
>   //get updated data
>   getdataPlot1(data_1);
>   getdataPlot2(data_2);
>  
> //update subplot 1
> pladv(1);
> plenv0(0.0, 1000, 0, 1000, 0, 1);
> pllab(“time”,”amp”,”data plot 1”);
> plshades(data_1, 1000,1000,NULL,0,1000,0,1000,……);
>  
> //update subplot 2
> pladv(2);
> plenv0(0.0, 1000, 0, 1000, 0, 1);
> pllab(“time”,”amp”,”data plot 2”);
> plshades(data_2, 1000,1000,NULL,0,1000,0,1000,……);
> }//end while(1)
>  
> However, the call to plshades that renders to the screen is too slow for my needs.  Is there a way to “speed up” plplot?  Would a GPU help?
>  
> Is there a more efficient way to do real-time plotting?
>  
> Thank you for your assistance.
> 
> Tom
>  
>  
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