I'm trying to do something that seems very simple but isn't working. Hence the post here :)
I want to define a very simple piecewise linear function. It's linear with slope alpha up to a knot at c and then it's linear with slope beta. Here's what I thought might work: f(x) = (x<=c)*alpha*x + (x>c)*(alpha*c + beta*(x-c)) Putting the inequalities in there caused a big mess. So I tried defining a Python Indicator function that turns Truth values into 0 or 1, and then I wrapped my relational expressions with it: def Indicator(cond): if (cond==True): return 1 else: return 0 This didn't work either: sage: foo(x) = Indicator(x>4) ; foo x |--> 0 Any other ideas? I suppose I could in this case define my piecewise function as a Python function, but then I won't be able to do as much with it later (e.g., differentiate it). Thx as usual, Doug --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---