Re: nonlinear3.dem is very slow on aqua terminal

[Daniel J S. <dan...@ie...>]

On 07/19/2016 12:04 AM, Jun T. wrote:

>>> It seems gnuplot uses about 0.5GB of memory for nonlinear3.dem.
>
> qt or wxt uses much smaller amount of memory.
>
> As for the CPU usage, Aquaterm.app uses about 95% of cpu while gnuplot uses 5 to 10%
> (100% means one cpu core is fully used). So it seems gnuplot creates large amount
> of data and send it to Aquaterm.app, while the latter uses large amount of cpu
> to process the data.
>
> I will do some profiling later (if I have some time).
>
>> I'm still surprised that this takes so long.  If none of the demos in 'image.dem' and 'image2.dem' are glacial-pace slow,
>
> They don't use the 'pixels' option for plot.

That's true.  But they do use the same polygon code ultimately.


> Just the following command (without any scaling etc.) takes a long time:
>
> plot 'blutux.rgb' binary array=(128,128) flipy format='%uchar' with rgbimage pixels

How long does the following plot take?:

plot 'blutux.rgb' binary array=(128,128) flipy rotation=30d 
format='%uchar' with rgbimage

Dan