#5221: default cmap for contour plot makes last contour line invisible when
fill=False
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Reporter: jason | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-3.4.1
Component: graphics | Keywords:
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Examine the output of
{{{
var('x,y')
contour_plot(x-y^2,(x,-5,5),(y,-3,3),contours=[-4,0,1], fill=False)
}}}
The last contour line (level curve at z=1) is invisible because the
default cmap makes it white. Compare that to a different color map:
{{{
var('x,y')
contour_plot(x-y^2,(x,-5,5),(y,-3,3),contours=[-4,0,1],cmap='winter',fill=False)
}}}
We should make the default cmap something less confusing when fill=False.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5221>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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