R help - Sep 2012 - How to Write a Model in R that has the Log taken of the Intercept

Hi,

I know that +1 is used to specify an intercept in a R model. An example of
this would be: y~x+1

If I want to have a model where the log of the intercept is taken, the
equation y~x+log(1) will not take the log of the intercept.

Any suggestions on how to take the log of the intercept will be appreciated.

Thanks

	[[alternative HTML version deleted]]

Hi

I do not understand your point.

actually

lm(y~x) is the same as lm(y~x+1)

You can specify a model without intercept by

lm(y~x-1)

you can even do

lm(y~log(x))

But log(intercept) does not have sense. You will get an intercept which is a
number and you can consider it

log(intercept)
exp(intercept)
intercept^2

Regards
Petr

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Cheryl Johnson
> Sent: Sunday, September 23, 2012 11:26 PM
> To: r-help at r-project.org
> Subject: [R] How to Write a Model in R that has the Log taken of the
> Intercept
> 
> Hi,
> 
> I know that +1 is used to specify an intercept in a R model. An example
> of this would be: y~x+1
> 
> If I want to have a model where the log of the intercept is taken, the
> equation y~x+log(1) will not take the log of the intercept.
> 
> Any suggestions on how to take the log of the intercept will be
> appreciated.
> 
> Thanks
> 
> 	[[alternative HTML version deleted]]
> 
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