On Jul 22, 2009, at 11:24 AM, William Stein wrote: > On Wed, Jul 22, 2009 at 11:19 AM, Ethan Van > Andel<evlu...@gmail.com> wrote: >> >> In list_plot there's some confusion with the pointsize and thickness >> keyword arguments. >> >> These 2 commands run just fine. >> list_plot([(0,0),(1,1)],thickness = 20,plotjoined = true) >> list_plot([(0,0),(1,1)],pointsize = 20,plotjoined = false) >> >> This one runs but ignores thickness and gives you a warning saying >> that it is ignoring thickness. >> list_plot([(0,0),(1,1)],thickness = 20,plotjoined = false) >> >> This one doesn't run at all but gives you an invalid option error. >> >> This behavior is needlessly finnicky, especially when writing >> functions that call list_plot with user supplied parameters. For >> example, this method would fail half of the time. >> >> def foo(size,joined): >> return list_plot(mydata,pointsize = size, plotjoined = joined) >> >> My first thought for a fix was to make the arguments interchangable, >> ie thickness = 5 and pointsize = 5 would do the same thing in both >> joined and discrete plots. However, they don't actually behave the >> same. For example, the line drawn with thickness = 20 is much thicker >> than a point with pointsize = 20. Therefore, if they were to be >> merged >> in some way what would be the best way to go about it? > > I have always found the value of pointsize to be very mysterious. I > wonder if we > could make it so pointsize=20 and thickness=20 are the same. This > would of course > break all existing use of pointsize, but at least it would make sense. > > I have heard many people chuckle when wondering what the pointsize > units are.
+1 for consistency. However, shouldn't it be able to specify both (and have it draw a line with (possibly larger) points? There is a distinction, in line3d, between "thickness" (which is always a given number of pixels regardless of the zoom) and "radius" which changes with the zoom. - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
