#8625: Make contour_plot choose the contour levels avoiding poles
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Reporter: olazo | Owner: olazo
Type: enhancement | Status: new
Priority: minor | Milestone: sage-4.6
Component: graphics | Keywords: scalar,plot
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by olazo:
Old description:
> This should be a function that plots a two variable funtion as a group of
> isolines along a given place of the xy plane.
New description:
At this point contours of a function with poles get too concentrated near
the poles. I'm adding a screenshot to exemplify the following code:
{{{
var('x y x0 y0 q')
R=((x-x0)^2+(y-y0)^2)^(1/2)
field=q/R
q1=field(x0=1,y0=1,q=1)
q2=field(x0=-1,y0=-1,q=-1)
contour_plot(q1+q2,(x,-2,2),(y,-2,2),aspect_ratio=1,fill=False,labels=True,contours=20)
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8625#comment:7>
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