Dear all
I have been using the .subs(locals()) functionality extensively, but
now I found out that this does not work for piecewise defined
functions.
Example:
sage: var('x a b')
(x, a, b)
sage: f1=a*sin(x)
sage: f2=b*sin(x)
sage: f = Piecewise([[(0,pi/2),f1],[(pi/2,pi),f2]])
sage: a=1
sage: b=-1
sage: f.subs(locals())
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
...
AttributeError: PiecewisePolynomial instance has no attribute 'subs'
The python function approach also fails in this case:
sage: def g(x):
....: return Piecewise([[(0,pi/2),f1],[(pi/2,pi),f2]])
sage: a=1
sage: b=-1
sage: g(1)
Piecewise defined function with 2 parts, [[(0, pi/2), a*sin(x)], [(pi/
2, pi), b*sin(x)]]
Am I doing something wrong?
Cheers
Stan
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