#4677: Plotting lambda functions
----------------------+-----------------------------------------------------
Reporter: kcrisman | Owner: was
Type: defect | Status: new
Priority: minor | Milestone: sage-3.2.2
Component: graphics | Resolution:
Keywords: |
----------------------+-----------------------------------------------------
Comment (by kcrisman):
Replying to [comment:1 jason]:
> Sure, it probably shouldn't work:
> plot expects that when it feeds "a" a number (like a(2)), a number
should be returned. Instead, a function is returned.
I guess my point was that I think one can catch this and use it. Unless
for some reason this is not desired, like some MS Word "guesses" at fixing
mistakes, it is the sort of thing that one can do
{{{
sage: f=x^2
sage: a=lambda x: f
sage: a(2)
x^2
sage: a=a(x)
sage: a(2)
4
}}}
so that in principle upon a TypeError, one could try letting func=func(x)
and then do float(func(point)).
But I don't have time to try that for a few more days. And maybe there is
some internal reason not to do this... but I don't think so, because the
result of plotting these is the empty plot otherwise, and one would
reraise the exception if this still caused a TypeError. Can you think of
anything where this would not raise an exception but still lead to bad
behavior? I've seen weirder things...
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4677#comment:2>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en
-~----------~----~----~----~------~----~------~--~---
