comp.lang.idl-pvwave archive
Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
Home » Public Forums » archive » calculating Standardized Precipitation Index (SPI)
Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend  		Switch to threaded view of this topic Create a new topic Submit Reply
calculating Standardized Precipitation Index (SPI) [message #89898] Fri, 19 December 2014 06:16 Go to next message
Teddy Allen is currently offline  Teddy Allen
Messages: 13
Registered: October 2010
Junior Member
Greetings,
Do any IDL users have experience calculating the standardized precipitation index (SPI)? I would greatly appreciate any support using IDL to calculate SPI.
Thank you,
teddy

Report message to a moderator

Re: calculating Standardized Precipitation Index (SPI) [message #89901 is a reply to message #89898] Fri, 19 December 2014 22:39 Go to previous messageGo to next message
Fabzi is currently offline  Fabzi
Messages: 305
Registered: July 2010
Senior Member
Hi,


On 19.12.2014 15:16, Teddy Allen wrote:> Greetings,
> Do any IDL users have experience calculating the standardized
precipitation index (SPI)?

There seems to be some programs available for free:
http://drought.unl.edu/MonitoringTools/DownloadableSPIProgra m.aspx

Otherwise you will probably need to roll your own using MPFIT (for example).

Cheers,

Fabien

Report message to a moderator

Re: calculating Standardized Precipitation Index (SPI) [message #90898 is a reply to message #89898] Fri, 08 May 2015 14:23 Go to previous message
ghusak is currently offline  ghusak
Messages: 1
Registered: May 2015
Junior Member
hi teddy,

i've coded up the SPI in IDL using a conditional gamma distribution accounting for the probability of no rainfall.

i'm not sure if it is standard to post functions to this group (i'm a bit of a newbie), but you can email me or reply here and i can send you the code.

gh

greg husak
ucsb department of geography
On Friday, December 19, 2014 at 6:16:47 AM UTC-8, Teddy Allen wrote:
> Greetings,
> Do any IDL users have experience calculating the standardized precipitation index (SPI)? I would greatly appreciate any support using IDL to calculate SPI.
> Thank you,
> teddy

Report message to a moderator

  Switch to threaded view of this topic Create a new topic Submit Reply
Previous Topic: problems with SAVGOL and POLY_SMOOTH
Next Topic: FL website moved

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Wed Oct 08 09:07:49 PDT 2025

Total time taken to generate the page: 0.19964 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.0.7.
Copyright ©2001-2013 FUDforum Bulletin Board Software