On 04/04/2012 10:11 AM, kcrisman wrote:
On Sunday, April 1, 2012 3:56:41 AM UTC-4, P Purkayastha wrote:
If I plot 2 points using list_plot3d, then they are correctly joined
by a line. If I increase the number of points to 3, then I don't get
a plane and instead get a bizarre shape with a "floor" suddenly
appearing out of nowhere. See the output of
list_plot3d([(0,0,1), (1,2,2), (0,1,0)], interpolation='nn',
num_points=200, point_list=True)
if isinstance(v, list):
if len(v) == 0:
# return empty 3d graphic
from base import Graphics3d
return Graphics3d()
elif len(v) == 1:
# return a point
from shapes2 import point3d
return point3d(v[0], **kwds)
elif len(v) == 2:
# return a line
from shapes2 import line3d
return line3d(v, **kwds)
But then it returns a list_plot3d_tuples and apparently this function is
extended by zero outside of its surface. I guess that makes sense. Maybe
we should also special-case len(v)==3 to make a plane? I don't use this,
so I don't know whether that would be good or bad to change for the
"typical" use case.
I uploaded a patch at http://trac.sagemath.org/sage_trac/ticket/12798 to
fix this issue. It needs a review. :)
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