Opened 7 years ago
Last modified 5 years ago
#13754 new defect
vertical lines in plot on left and right end
Reported by: | dkrenn | Owned by: | jason, was |
---|---|---|---|
Priority: | major | Milestone: | sage-6.4 |
Component: | graphics | Keywords: | plot boundary line |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
In the plot
plot(sin(3*pi*x)/sin(pi*x), (x,-5,5))
there are some artifacts at -5
and 5
, namely a straight vertical line going to the top of the plot. They shouldn't be there. This also happens plotting the same function in the intervals (-9,9), (-10,10), (-15,15), (-17,17), (-18,18)
. In the plot
plot(sin(3*pi*x)/sin(pi*x), (x,-7,7))
something similar occurs, but the line goes down. This also happens for the interval (-14,14)
. For other interval boundaries than the mentioned (integers from -19 to 19) this does not happen. You can even mix, e.g. taking an interval (-7,5)
.
It also happens using functions sin(m*pi*x)/sin(pi*x)
with m
different from 3
(tested with 5
).
Change History (4)
comment:1 Changed 6 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:2 Changed 6 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:3 Changed 6 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:4 Changed 5 years ago by
- Milestone changed from sage-6.3 to sage-6.4