comp.lang.idl-pvwave archive: archive » how to give the initial estimate for function comfit

Members
Search
Help
Login
Home

Home » Public Forums » archive » how to give the initial estimate for function comfit

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

how to give the initial estimate for function comfit [message #50136]

Fri, 08 September 2006 19:10

chen123.dian
Messages: 4
Registered: April 2006

Junior Member

Hi,

I am using functon comfit to fit y=a0*(x^a1)+a2. The command I used,
result=comfit(x, y, a, /geometric).
The problem is how to give the initial estimate 'a'. I tried several
different values, the results were different. So which results should
be used? How to choose the initial values?

Thanks so much!

Chen

Report message to a moderator

Previous Topic:	Re: changing resolution from 4km to 36 km grid in ENVI
Next Topic:	IDL 6.3 Intel in Mac + IDLWAVE + graphics = CRASH

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 17:31:20 PDT 2025

Total time taken to generate the page: 0.00495 seconds