I was playing around with polar plots and trying to alter the grid
labels when I ran into some weird errors. Whenever I call
pyplot.thetagrids() (and similarly with rgrids) I get:
>>> AttributeError: 'PolarAxesSubplot' object has no attribute
'thetagridlines
After searching the MPL directory, it didn't seem like thetagridlines
was defined anywhere. Alternatively, If I call thetagrids with an
argument [e.g. thetagrids(range(45,360,90))], I get
>>> TypeError: 'NoneType' object is not iterable
which comes from the following line in pyplot:
>>> lines, labels = ax.set_thetagrids(*args, **kwargs)
Strangely, the set_thetagrids method of PolarAxes doesn't return any
values and this is causing the TypeError above.
I'm really confused about these errors. Any help would be greatly
appreciated.
-Tony
PS: Full tracebacks are shown below.
I'm on MPL trunk, r5588.
CASE 1:
------------
Traceback (most recent call last):
File "polar.py", line 19, in <module>
lines, labels = thetagrids()
File "/Users/Tony/python/matplotlib/trunk/matplotlib/lib/matplotlib/
pyplot.py", line 984, in thetagrids
lines = ax.thetagridlines()
AttributeError: 'PolarAxesSubplot' object has no attribute
'thetagridlines'
CASE 2:
------------
Traceback (most recent call last):
File "polar.py", line 19, in <module>
lines, labels = thetagrids(range(45,360,90))
File "/Users/Tony/python/matplotlib/trunk/matplotlib/lib/matplotlib/
pyplot.py", line 987, in thetagrids
lines, labels = ax.set_thetagrids(*args, **kwargs)
TypeError: 'NoneType' object is not iterable
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