Thanks Martin for the lead. A new avenue to explore.
Dhruv
-Original Message-
From: Martin Maechler [mailto:maech...@stat.math.ethz.ch]
Sent: Wednesday, March 10, 2010 6:18 AM
To: kMan
Cc: Sharma, Dhruv; r-help@r-project.org
Subject: Re: [R] r code to generate interaction columns
ere
which you can run in R by
examples(model.matrix)
Regards,
Martin Maechler, ETH Zurich
k> -Original Message-
k> From: Sharma, Dhruv [mailto:dhruv.sha...@penfed.org]
k> Sent: Monday, March 08, 2010 7:51 AM
k> To: kMan; r-help@r-project.org
k> Subje
Dhruv; r-help@r-project.org
Subject: RE: [R] r code to generate interaction columns
Dear Dhruv,
You could create interaction variables manually (assuming A is your
dependent variable). Just multiply the variables together.
cd.int<-C*D
ce.int<-C*E
cde.int<-C*D*E # what about D*E, or inter
-project.org
Subject: RE: [R] r code to generate interaction columns
Dear Dhruv,
You could create interaction variables manually (assuming A is your
dependent variable). Just multiply the variables together.
cd.int<-C*D
ce.int<-C*E
cde.int<-C*D*E # what about D*E, or interactions with B?
Incl
From: Sharma, Dhruv [mailto:dhruv.sha...@penfed.org]
Sent: Saturday, March 06, 2010 10:30 AM
To: r-help@r-project.org
Subject: [R] r code to generate interaction columns
Hi,
is there a way to take a dataset and extract numeric columns and create
interaction columns from it automatically?
For e.g. the
Hi,
is there a way to take a dataset and extract numeric columns and create
interaction columns from it automatically?
For e.g. there are 5 columns of data: A,B,C,D,E.
CDE are numeric.
Can someone provide code to automatically create more columns such as:
1) C*D, C*E, C*D*E, (C
Hi,
is there a way to take a dataset and extract numeric columns and create
interaction columns from it automatically?
For e.g. there are 5 columns of data: A,B,C,D,E.
CDE are numeric.
Can someone provide code to automatically create more columns such as:
1) C*D, C*E, C*D*E, (C
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