correlation by subset
Hi Mr. Cleland it worked excellently well, and i believe the same logic or function by() can be used even for running regressions on subsets of huge datasets. correct me if iam wrong thank you for the help rgds snvk
On 8/24/05, Krishna <snvk4u at gmail.com> wrote:
Hi Mr. Cleland Could you please detail the function. Thanks and best regards snvk On 8/24/05, Chuck Cleland <ccleland at optonline.net> wrote:
by(mydata, mydata$GROUPING, function(x) cor(x$x, x$y, use="pair")) ?by Krishna wrote:
Hi all Having searched the available documentation on R, I request for help in sorting out the underlying problem. I have a huge dataset containing 2 variables x and y, which is a daily price series. I would like to observe the quarterly correlations among these two variables. Is there anyway where i can calculate cor.coeff by using a grouping variable in R. thanks in advance for the help rgds snvk
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