On Tue, Mar 4, 2008 at 8:03 PM, dean moore <[EMAIL PROTECTED]> wrote: > I'm trying to spline the unit circle. The graph looks like a polynomial, > not a fit to > the unit circle. >
Well, you're going to have some problems using spline since it does a univariate polynomial spline interpolation. What you really want to do is do a spline on each of the coordinates and then do a parametric plot of those two splines: v = [] # Will hold points step = 0.5 # "Fineness" of my approximation for x in srange(0, 2*pi, step): # Fill parameter *v* with points v.append((cos(x), sin(x))) # on the unit circle. x_spline = spline([(RDF(i)/len(v), v[i][0]) for i in range(len(v))]+[(1,v[0][0])]) y_spline = spline([(RDF(i)/len(v), v[i][1]) for i in range(len(v))]+[(1,v[0][1])]) parametric_plot((x_spline, y_spline),0,1) --Mike --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
<<inline: unit_circle_spline.png>>
