The new variables don't seem to work well with the plotting code as
is; I give below output for two plots using old and new variables. I
assume this is known, but just wanted to put it out there.
On the plus side, the new variables are MUCH faster. How do I know?
Because for the first time ever using Sage, I don't have to wait for a
variable! It is also nice to not see that "Exiting spawned Maxima
process." message. So thank you to Burcin and the rest involved in
this.
- kcrisman
Examples:
Using old variables in 3.2.alpha0 works fine:
sage: var('x,y,z')
(x, y, z)
sage: plot(x^2,0,1) [works]
sage: plot(x^2,x,0,1) [works]
Using new variables in same version, not so good:
sage: var('x,y,z', ns=1)
(x, y, z)
sage: (x+y).variables()
[x, y] # proves we have the new variables
sage: plot(x^2,0,1)
verbose 0 (3605: plot.py, _plot) WARNING: When plotting, failed to
evaluate function at 400 points.
verbose 0 (3605: plot.py, _plot) Last error message:
''sage.symbolic.expression.Expression' object is not callable'
sage: plot(x^2,x,0,1)
verbose 0 (3400: plot.py, plot) there were 3 extra arguments (besides
x^2)
---------------------------------------------------------------------------
UnboundLocalError Traceback (most recent call
last)
<snip>
/Users/.../site-packages/sage/plot/plot.pyc in plot(funcs, *args,
**kwds)
3601 if do_show:
3602 G.show()
-> 3603 return G
3604
3605 def _plot(funcs, xrange, parametric=False,
UnboundLocalError: local variable 'G' referenced before assignment
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