R help - Oct 2011 - Suppressing the Intercept in lm() when using a dataframe for the model

It's easy to run a linear regression on a simple model without an intercept
just by doing this:

lm(y ~ x1 + x2 -1)


Is there a similar trick to suppress the intercept when your model is in a
large dataframe and you don't want to write out the names of individual
columns?

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On Sun, Oct 16, 2011 at 12:55 PM, Cliff Clive <cliffclive at gmail.com>
wrote:
> It's easy to run a linear regression on a simple model without an
intercept
> just by doing this:
>
> lm(y ~ x1 + x2 -1)
>
>
> Is there a similar trick to suppress the intercept when your model is in a
> large dataframe and you don't want to write out the names of individual
> columns?
Yep...same trick.
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/Suppressing-the-Intercept-in-lm-when-using-a-dataframe-for-the-model-tp3910327p3910327.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
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> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, ATS Statistical Consulting Group
University of California, Los Angeles
https://joshuawiley.com/

On Oct 16, 2011, at 3:55 PM, Cliff Clive wrote:
> It's easy to run a linear regression on a simple model without an  
> intercept
> just by doing this:
>
> lm(y ~ x1 + x2 -1)
>
>
> Is there a similar trick to suppress the intercept when your model  
> is in a
> large dataframe and you don't want to write out the names of  
> individual
> columns?
Something along the lines of:
lm(y ~ . -1, data=dfrm)

But you do need to offer specific examples to get specific answers.  
(Hence the usual advice to read the Posting Guide.)
>

-- 

David Winsemius, MD
Heritage Laboratories
West Hartford, CT