Re: [ferret_users] Trend in time series

[Jaison Kurian <jaison@xxxxxxxxxxxxxxxxxx>]

Hi Nikesh,
            This "trend" stuff is well documented. Please look the the
following FAQ about Computing least squares, regressions, detrending 
data:

http://ferret.pmel.noaa.gov/Ferret/FAQ/analysis/regressions.html

Here is a nice example for plotting the trend (posted by Ansley).

http://www.ferret.noaa.gov/Ferret/Mail_Archives/fu_2004/msg00247.html

Please note that most of the time you can find a solution to your 
problem from FAQ or mail archives. Use the "Search the Archives" link
at the Ferret archives page, with proper key words to see earlier
postings which discusses about similar problems. Also the Ch1 Sec5.2.  
GO tools in Ferret user manual contains a list of useful go tool
available with Ferret. The relevant links are here :

http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/ferret_mail_archives.html
http://ferret.pmel.noaa.gov/Ferret/FAQ/ferret_FAQ.html

Hope this helps,

Jaison

On Mon, 20 Nov 2006 nikesh@palmod.uni-bremen.de wrote:

> Hi all,
> 
>  I have to plot a time series of meridional wind stress at one location. I want
> to place a horizontal bar just to see the trend whether it is decreasing or
> increasing. I use ferret 5.81 on Scientfic linux.
> 
> Thanks in advance for the help
>