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
#!/sw/bin/python2.7
import matplotlib
matplotlib.use( "Agg" )
import matplotlib.figure as pltfig
import matplotlib.pyplot as plt
import matplotlib.gridspec as mpgs
plt.close("all")
#plot grid
plt.close()
plt.figure(
figsize=(6.5, 9.0),
subplotpars=pltfig.SubplotParams( top=0.95,
left=0.1,
bottom=0.08,
right=0.98 ))
gs = mpgs.GridSpec( 3, 2, wspace=0.0, hspace=0.0 )
PlotOrder = [ (0, 0), (0, 1),
(1, 0), (1, 1),
(2, 0), (2, 1) ]
panellabels = [ "a", "b",
"c", "d",
"e", "f" ]
xmin, xmax = (-3.0, 3.0)
ymin, ymax = (-5.0, 5.0) #This works fine
ymin, ymax = (-5.0, 4.999) #This breaks the labeling
for coords, label in zip( PlotOrder, panellabels ):
ax = plt.subplot(gs[ coords[0], coords[1] ])
ax.set_xlim( (xmin, xmax) )
ax.set_ylim( (ymin, ymax) )
ax.annotate( r"$\mathbf{" + label + ")}$",
xy=(0.5*(xmin+xmax), 0.5*(ymin+ymax)),
xytext=(0.9, 0.9),
textcoords="axes fraction", fontsize=14 )
plt.savefig( "BugDemo.pdf", fmt="pdf" )
BugDemo.pdf
Description: Adobe PDF document
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