Hi Harald: Thanks for the great example. The fit is much better. I've been working problems from Cutlip and Shacham, "Problem Solving in Chemical Engineering with Numerical Methods". They have worked 10 selected problems with Polymath, MATLAB, Mathematica, Maple and Excel. I've been working the same set with Sage. For this problem, 1.3, the first attempt was using the polyfit function in MATLAB. I was using the Sage polyfit for comparison. The log fit is much better. Thanks for the example, it helps alot.
Regards, Steve On Thu, Jan 15, 2009 at 4:51 AM, Harald Schilly <[email protected]>wrote: > > On Jan 15, 5:41 am, "Steve Yarbro" <[email protected]> wrote: > > Hi Michael: > > > > I published an example athttp://sagenb.org:8000/home/pub/156. Thanks. > > Hello, aside from the actual problem, this fit looks quite wrong. I > played around a bit and fitted a logarithmic model in R. R is not very > well embedded and I forgot how to extract the values from a list (i.e. > I don't know how to access the values of the actual fit and had to > copy them by hand *g*), but here is how it looks: > > http://sagenb.org:8000/home/pub/158/ > > Harald > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] 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 -~----------~----~----~----~------~----~------~--~---
