Re: gnuplot, wxterminal and antialiasing

[Ethan M. <merritt@u.washington.edu>]

On Friday 10 March 2006 03:10 pm, Timoth=E9e Lecomte wrote:

> This problem comes from the terminal API, which works with integers
> everywhere. That's why 'plot x', on all platforms, looks wobbly to
> some extent instead of being a straight diagonal.

I was able to mitigate this problem dramatically for the svg termimal
simply by increasing the driver's internal scale by a factor of 10.
Screen coordinates are still integers, but the resolution is 10x better,
and the wobble is essentially eliminated.

> Please take a look at this screeshot

Here are a pair of screenshots, before and after increasing the
svg internal scale by a factor of 10.

http://www.bmsc.washington.edu/people/merritt/gnuplot/scale_1.png
http://www.bmsc.washington.edu/people/merritt/gnuplot/scale_10.png

> As for me, I prefer the rendering with the modified oversampling
> wxterminal because it gets rid of the annoying aliased and wobbling
> lines.

Does it affect the speed?=20
I'm already concerned that the wxterminal is slow compared to x11.


=2D-=20
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle WA