#13246: Automatic exclusion of non-domain points in things like arcsec
-------------------------------------+-------------------------------------
Reporter: kcrisman | Owner: jason, was
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: graphics | Resolution:
Keywords: | Merged in:
Authors: Punarbasu | Reviewers: Ralf Stephan
Purkayastha | Work issues:
Report Upstream: N/A | Commit:
Branch: | 148aafbc155f5fceb9f156a725067e1b9f5c5436
u/ppurka/automatic_exclusion_of_non_domain_points_in_things_like_arcsec|
Stopgaps:
Dependencies: #16439 |
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Comment (by kcrisman):
{{{
parametric_plot((x, arcsec(x)), (x, -2, 2))
<usual complex to float error>
}}}
from the doctest doesn't seem to work for me. I wonder if this worked
before #16439?
----
I have a different comment.
{{{
sage: plot(sqrt(x^2-1), -2, 2, plot_points=500, ymin=0)
}}}
yields
[[Image(tmp_W0a_CS copy.png)]]
As you can see, it never quite makes it down to the horizontal axis. If
you use the endpoints 1 and 2, it does; 0 and 2 doesn't. (And presumably
didn't in the past, either.) Anyway, that is annoying, though I'm not
sure there is much to do about it.
--
Ticket URL: <http://trac.sagemath.org/ticket/13246#comment:44>
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