Conrad B Ammon wrote: > > I can't figure out sourceforge's interface to submit a ticket, so I'm > mailing this to the devel list. That'll give you a sense of my urgency > ;- ) > > Subject: Axes Ylims are reversed > Version: 0.98.3 > > when calling get_xlims(), the values returned are in increasing order: > [xmin, xmax]. With get_ylims() however, it is reversed. > # make axes in figure, named ax > > ax.get_xlims() > >> [-5, 639] > ax.get_ylims() > >> [479.5, -0.5] > > ax.set_ylims(ymin, ymax) seems to work, until you use the Image artist. > The image flips upside down when you do this. > > I first noticed it when I called ax.imshow(image) and an image was right > side up. When I called set_ylims(ymin, ymax), it flipped upside down. > It was rightside up if I called set_ylims(ymax, ymin) > > Workaround: simply reverse the limits when using set_lims or get_lims > > Affected: > Images > Axes > Axes documentation (where get_ylims is described as get_ylims(ymin, ymax) ) > > Sorry for not sending this to the right place, > -Conrad Ammon
Conrad, It is just as well to start out with a mailing list in a case like this. What you have found is a very confusing aspect of the variable naming and the documentation, not a bug in the code itself. It has always been part of the mpl design that set_ylim and set_xlim are really setting the bottom and top values, and the left and right values, in that order, and not the min and max. To compound the confusion, images are inverted by default; row number increases from top to bottom. See also the methods invert_yaxis, set_ybound, etc. Eric ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
