Dear R-users.... please ignore my most recent posting..
Found the solution.. Thanks to David Winsemius..
Thanks,
Santosh
On Tue, Jul 14, 2009 at 9:14 PM, Santosh <santosh2...@gmail.com> wrote:
> Dear R-users..
>
> I hope the following scenario is more explanatory of my question..
>
> Continuous variables: AGE, WEIGHT, HEIGHT
> Categorical variables: Group, Sex, Race
> I would like to find a correlation between WEIGHT and AGE, grouped by
> "Group","Sex", and "Race".
>
> Is the following formula correct?
> tapply(dat$WEIGHT,
> by=list(dat$AGE,as.factor(dat$Group),as.factor(dat$EX),as.factor(dat$RACE)),cor)
>
>
> Thanks,
> Santosh
>
>
> On Tue, Jul 14, 2009 at 7:34 PM, Santosh <santosh2...@gmail.com> wrote:
>
>> Hi R-users,
>>
>> Was wondering if there is a way to quickly compute correlations between
>> continuous variables grouped by some categorical variables?
>>
>> What function do I use?
>>
>> Thanks much in advance.
>>
>> Regards,
>> Santosh
>>
>
>
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