[Matplotlib-users] Annotate not Drawing Properly in a Gridspec - Version 1.4.3

[Sean L. <ody...@gm...>]

Hello all,

I'm using matplotlib 1.4.3 installed using fink with python 2.7.

I'm trying to produce a grid of plots using gridspec that has annotations to label each plot. 

Here is the call to annotate the current axes:
ax.annotate( r"$\mathbf{" + lab + ")}$",
                 xy=(0.5*(xmin+xmax), 0.5*(ymin+ymax)),
                 xytext=(0.9, 0.9),
                 textcoords="axes fraction", fontsize=14 )

Where ax is initialized by:
ax = plt.subplot(gs[ coords[0], coords[1] ])

and gs by:
gs = mpgs.GridSpec( 3, 2, wspace=0.0, hspace=0.0 )

The trouble comes in when abs(ymax) < abs(ymin). When that is true, the labels are offset upward by one row, for some reason.

I've attached a script that demonstrates the problem, and an example of the output. I can work around this problem by using "data" coordinates, but even so this reveals a bug somewhere.

Thanks,
Sean Lake