[R] (... not defined because of singularities) in lm()

[Jia Pu]

Thanks, Petr.

isInterNuclear and zeroSyllToEOP are both binary, and it turns out :
isInterNuclear & zeroSyllToEOP == zeroSyllToEOP.

On Aug 6, 2006, at 11:23 PM, Petr Pikal wrote:

> Hi
>
> On 4 Aug 2006 at 16:44, Jia Pu wrote:
>
> To:             	r-help at stat.math.ethz.ch
> From:           	Jia Pu <jpu at apple.com>
> Date sent:      	Fri, 4 Aug 2006 16:44:44 -0700
> Subject:        	[R] (... not defined because of singularities) in  
> lm()
>
>> I got the message, " Coefficients: (1 not defined because of
>> singularities)", in the returned result of lm(). What does it mean?
>> And where should I start investigating why it happens?
>
> one of your variables (probably isInterNuclear:zeroSyllToEOP) is a
> linear combination of other explanatory variables or is constant.
>
> HTH
> Petr
>