Opened 9 years ago
Last modified 6 years ago
#14037 new defect
plot of piecewise defined function raises UnboundLocalError
Reported by: | slabbe | Owned by: | jason, was |
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Priority: | major | Milestone: | sage-7.3 |
Component: | graphics | Keywords: | |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
This was reported to me by Mathieu Roux:
sage: f = Piecewise([[(0,1),1],[(1,2),x-1]],x) ... DeprecationWarning: use lower-case piecewise instead sage: plot(f,0,2) verbose 0 (575: plot.py, plot) there were 4 extra arguments (besides <sage.ext.fast_eval.FastDoubleFunc object at 0xb912618>) --------------------------------------------------------------------------- UnboundLocalError Traceback (most recent call last) ... /Users/slabbe/Applications/sage-5.6.rc0/local/lib/python2.7/site-packages/sage/plot/plot.pyc in plot(funcs, *args, **kwds) 1117 sage.misc.misc.verbose("there were %s extra arguments (besides %s)" % (n, funcs), level=0) 1118 -> 1119 G._set_extra_kwds(G_kwds) 1120 if do_show: 1121 G.show() UnboundLocalError: local variable 'G' referenced before assignment
It seems related to a problem cited on sage-support in 2008.
Note that the following works:
sage: f.plot()
Change History (6)
comment:1 Changed 9 years ago by
comment:2 Changed 8 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:3 Changed 8 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:4 Changed 8 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:5 Changed 7 years ago by
- Milestone changed from sage-6.3 to sage-6.4
comment:6 Changed 6 years ago by
- Description modified (diff)
- Milestone changed from sage-6.4 to sage-7.3
Description modified. This is a bug in the old (deprecated in #14801) Piecewise
(capital P).
Can close this bug when the old Piecewise
is removed completely.
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Probably a variation on the same theme:
Reported by Isabelle Rouanet.