comp.lang.idl-pvwave archive: archive » least square error for a sinusoid

Home » Public Forums » archive » least square error for a sinusoid

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

least square error for a sinusoid [message #41042]

Wed, 15 September 2004 15:31

yaj
Messages: 6
Registered: July 2004

Junior Member

Hello,
I am fitting a function of the form
ASin(wt + theta) + constant to a set of points. Instead of a readymade
fitting routine from IDL (to avoid any potential problems with small numbers
later), I use the three linear equations to minimize the least square error,
then use an IDL function to solve the matrix equation. Could someone suggest
a simple way to calculate the least squares error and goodness of fit using
some higher level IDL functions ?
Thanks in advance

Report message to a moderator

[Message index]

least square error for a sinusoid

By: yaj on Wed, 15 September 2004 15:31

Previous Topic:	least square error for a regression
Next Topic:	OO IDL

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 11:43:49 PDT 2025

Total time taken to generate the page: 0.07938 seconds