Re: [Matplotlib-users] Inexact drawing of points

2011-11-14 Thread Michael Droettboom
On 11/13/2011 10:03 AM, Goyo wrote: > 2011/11/7 Anton Daitche: > >> Do you remember the name of the thread? I would like to understand the >> details on this. > I can't find it right now but I guess Michael's answer helps you. > >> I also would like to find out if i can force the renderer to do exa

Re: [Matplotlib-users] Inexact drawing of points

2011-11-13 Thread Goyo
2011/11/7 Anton Daitche : > Do you remember the name of the thread? I would like to understand the > details on this. I can't find it right now but I guess Michael's answer helps you. > I also would like to find out if i can force the renderer to do exact > drawing (at some computational cost).

Re: [Matplotlib-users] Inexact drawing of points

2011-11-08 Thread Michael Droettboom
For speed in the Agg backend the markers are drawn once and then copied as rasters to all of their positions. This implies that the markers end up pixel aligned, which is the source of the error you're seeing. This does not happen in the vector backends. If you want to not get this behavior,

Re: [Matplotlib-users] Inexact drawing of points

2011-11-07 Thread Anton Daitche
Hi, As I remember from an earlier discussion on this, it's assumed that > these small deviations are tolerable in the agg renderer. This makes > the interactive backends more responsive at expenses of accuracy. > Do you remember the name of the thread? I would like to understand the details on th

Re: [Matplotlib-users] Inexact drawing of points

2011-11-05 Thread Goyo
2011/11/2 Anton Daitche : > Hallo, > i am observing inexact drawing of point in matplotlib. As I remember from an earlier discussion on this, it's assumed that these small deviations are tolerable in the agg renderer. This makes the interactive backends more responsive at expenses of accuracy. I