comp.lang.idl-pvwave archive: archive » learning how to use mpfit,. need help

Home » Public Forums » archive » learning how to use mpfit,. need help

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

Re: learning how to use mpfit,. need help [message #87748 is a reply to message #87740]

Tue, 25 February 2014 20:13

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

On Tuesday, February 25, 2014 4:35:53 PM UTC-5, alk...@gmail.com wrote:
> IDL> y = 25.*exp(-(x-32.)^2/(2*5.^2))+2.*randomn(0,101)
> % Program caused arithmetic error: Floating underflow

Floating underflow is almost never an error. It's just warning you that exp(-large_number) far from the centroid of the gaussian, has truncated precision or is being set to zero. Plot your data and you will see it's fine.

Craig

Report message to a moderator

[Message index]

		learning how to use mpfit,. need help By: alkyl47 on Tue, 25 February 2014 13:35
		Re: learning how to use mpfit,. need help By: David Fanning on Tue, 25 February 2014 13:44
		Re: learning how to use mpfit,. need help By: alkyl47 on Tue, 25 February 2014 13:55
		Re: learning how to use mpfit,. need help By: Harald Frey on Tue, 25 February 2014 15:42
		Re: learning how to use mpfit,. need help By: Craig Markwardt on Tue, 25 February 2014 20:13

Previous Topic:	Using a text list to populate a LIST() in IDL
Next Topic:	ps_start output

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Nov 28 08:45:02 PST 2025

Total time taken to generate the page: 0.01544 seconds