topic Re: Help! in SAS Programming

Help!

Metz — Wed, 24 Jun 2015 07:43:13 GMT

Hi! I have a question: how can i 'translate' this RStudio command

> fm9.1<-gls(visual~-1+visual0+time.f+treat.f:time.f, weights=varIdent(form=~1|time.f),data=armd)

> summary(fm9.1)

in SAS code?

I can't solve this problem. Thanks for your help!

Re: Help!

Steelers_In_DC — Wed, 24 Jun 2015 12:44:41 GMT

I do not know Rstudio but if you give a sample of data you have and what you are trying to do I can try to help.

Re: Help!

RW9 — Wed, 24 Jun 2015 12:53:09 GMT

Hi,

With regards to the Linear Modelling GLS procedure, you can have a look at:

http://support.sas.com/documentation/cdl/en/statugregression/61752/PDF/default/statugregression.pdf

Or post directly into the statistics section on here about Linear Models.

With regards to the summary command, there is proc summary, proc means, proc freq. All have help pages on line. Should be mainly putting your variables in the correct order.

Re: Help!

Metz — Wed, 24 Jun 2015 13:21:09 GMT

Thanks! But my problem is that hat i want to do a linear regression with heterogeneus variance, because my 'w_i' is not equal 1 but is equal to the variance of the first level of a model's factor. How can i write this?

Re: Help!

RW9 — Wed, 24 Jun 2015 14:14:22 GMT

I would suggest posting in the Statistical Procedures section of this help with your question, I am not a statistician sorry.

Re: Help!

Ksharp — Wed, 24 Jun 2015 14:22:58 GMT

You mean Weighted Least Square ? Post it at Stat Forum. I guess proc glm can do that.

Re: Help!

Metz — Wed, 24 Jun 2015 14:32:58 GMT

Yes, i mean that! Ok i try there. Thank you all