[R] Why can't Anove (car package) see the data?

[Patrick Connolly]

At the end of the 'Details:' section of the help on Anova (car
package), it states:

     The standard R `anova' function calculates sequential (type-I)
     tests. These rarely test meaningful hypotheses.

So I thought I'd try it.  However, I was perplexed to get this
message:

Browse[1]> Anova.glm(leaf.glm1, type ="II")
Error in terms.formula(formula, data = data) : 
	Object "use.df" not found

The regular anova function can find use.df.  What could make it
invisible to Anova?  I thought it might be because terms.formula took
an argument x and I already had an object x, but changing its name
didn't help.  I spent some time searching the archives but found no
mention of this problem.  I read some of the car package help files,
but didn't notice a reference to what is different in the way data is
seen.

The example given in the help file does work, but it uses a data
object which is in the working directory.  That's not practicable
within a function.  So I'd appreciate other ideas.

platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
status                    
major    1                
minor    5.1              
year     2002             
month    06               
day      17               
language R                

Thanks

-- 
Patrick Connolly
HortResearch
Mt Albert
Auckland
New Zealand 
Ph: +64-9 815 4200 x 7188
~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~
I have the world`s largest collection of seashells. I keep it on all
the beaches of the world ... Perhaps you`ve seen it.  ---Steven Wright 
~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~


______________________________________________________
The contents of this e-mail are privileged and/or confidential to the
named recipient and are not to be used by any other person and/or
organisation. If you have received this e-mail in error, please notify 
the sender and delete all material pertaining to this e-mail.
______________________________________________________
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._