proc varclus

[AlexeyS]

Hello, i have two questions :

1. i didn't understand what is difference between proc varclus and proc cluster(hierarchical clusterin)?  why i need proc varclus? (if i have data with 200 variables)

2. when i run proc varclus i write option of tree. at the end i want to know which variable at what cluster? how i know it? what i need write in procedure to get this?

thank you

[Reeza]

1. Proc Cluster -> clusters observations together

Proc VarClus -> clusters variables together. 

2. Capture the ODS table

http://www.ats.ucla.edu/stat/sas/faq/odsexample.htm

Check the structure of OutTree dataset. Not sure if it's one of those that can be used or only contains data for Proc tree. 

[AlexeyS]

Can you explain me please, how can i know that proc varclus well clustered my variables? there a lot of otpus and i don't understand where i should see the the goodness of clustering. thank you