[Qgis-user] Principal Component Analysis ?

[Nicolas Cadieux]

Hi, 
You can use R for PCA.
Use the R Commander package to add a GUI.  R can be scary at first.
Nicolas

> Le 23 juin 2017 à 11:03, image [via OSGeo.org] <ml+s1560n5325338h39 at n6.nabble.com> a écrit :
> 
> Good afternoon, 
> 
> i'm working on windows with several opensource tools (qgis, otb, grass...), 
> 
> I generated several OTB texture indices. Now, i want to evaluate the information 's redundancy thanks to a Principal Component Analysis. 
> 
> => Is it possible to do that with some opensource tools (otb? qgis? grass?) Moreover, I would like set a mask AND set a spectral subset (in order to ignore some indices bands which seems "strange" and not relevant to introduce into the process). 
> 
> Could you throw light for me? 
> 
> In advance, thank you very much for your help. 
> 
> Kind regards. 
> 
> If you reply to this email, your message will be added to the discussion below:
> http://osgeo-org.1560.x6.nabble.com/Principal-Component-Analysis-tp5325338.html
> To start a new topic under QGIS - User, email ml+s1560n4125267h38 at n6.nabble.com 
> To unsubscribe from QGIS - User, click here.
> NAML




--
View this message in context: http://osgeo-org.1560.x6.nabble.com/Principal-Component-Analysis-tp5325338p5325361.html
Sent from the QGIS - User mailing list archive at Nabble.com.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20170623/cc610014/attachment.html>