#10792: Upgrade numpy to 1.5.1
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Reporter: jason | Owner: tbd
Type: task | Status: new
Priority: major | Milestone: sage-4.7
Component: packages | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by jason):
I don't understand the riemann code very well either, but it seems like
the warning is coming from the line where temp (a real array?) is being
assigned a value from self.cps (a complex array)---see the code that is
deleted in the trac-10792-riemann.patch file. I simplified the code a lot
to avoid having a temporary array, but this changed lots of numerical
results. So one question is: are the results it returns now better or
worse than before?
I also seem to get a huge number of `Warning: invalid value encountered in
divide` warnings when doing `Riemann_Map([lambda t: e^(I*t) -
0.5*e^(-I*t)], [lambda t: I*e^(I*t) + 0.5*I*e^(-I*t)], 0)`. These come
from NaN values popping up in the array. Does anyone else see those?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10792#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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