Hi, I am trying to construct the usual spline basis functions. In short, I start with several piecewise functions that take values 1 and 0 only, and then make combinations of them. But there is something with the syntax that I am not managing to do well, I suppose:
L[1] Piecewise defined function with 3 parts, [[(-1, 0), 0], [(0, 1.50000000000000), 0], [(1.50000000000000, 3.20000000000000), 1]] t = var('t') L[1]*t Traceback (click to the left for traceback) ... AttributeError: 'sage.symbolic.expression.Expression' object has no attribute 'domain' It seems to me that I have to set things up so that L[1] is a function of t as well. I tried "lambda t: " in front where I define it, but now L[1] is a function whose value is always a certain piecewise function :) Any suggestions? Thanks, David --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---