[R] ANOVA with many IV's

[Rolf Turner]

It is not nearly as complicated as Dennis Murphy makes out.

Just do

     aov(y ~ ., data=X)

where X is your data frame with one column (the response) name ``y''
and then any number of other columns which will then form the
predictors (which may be either numeric predictors or factors).

     cheers,

         Rolf Turner

On 09/06/11 16:14, Dennis Murphy wrote:
> Hi:
>
> You can try something like this: assuming the factor variables of
> interest and the response variable are in a data frame named df,
>
> ivset<- c(<comma separated vector of factor names>)
> myaovs<-  lapply(ivset, function(x) {
>       form<- as.formula(substitute(yvar ~ foo, list(foo = as.name(x))))
>       aov(form, data = df)
>     } )
>
> This should generate a list of aov objects, one per factor in ivset.
> > From there, R has functions to extract pieces of output as needed.
>
> Since no example data was presented, the above is untested, so caveat emptor.
>
> HTH,
> Dennis
>
> On Wed, Jun 8, 2011 at 3:25 PM, mandakaye<mandakaye at gmail.com>  wrote:
>> I'd like to conduct one-way ANOVA's on multiple IV's. Is there a function for
>> "aov (y~"all of my IV's")? Thank you!
>>
>> --
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>> Sent from the R help mailing list archive at Nabble.com.
>>
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