[R] Help on Analysis of covariance

Chuck Cleland ccleland at optonline.net
Tue Jul 1 13:15:30 CEST 2008

On 7/1/2008 4:57 AM, Partha wrote:
>  Dear All,
> Kindly tell me the steps to perform analysis of covariance (ANCOVA). Can I find anything in the help(). My prime objective is to analyze the genotypic and phenotypic correlation coefficients.
> Thanks,
> Partha

RSiteSearch("{analysis of covariance}", restrict="function")

   would be a good way to identify possible functions.  Among other 
things, this points to lm() in the stats package.
   Also, you might look at some of the contributed R documentation 
(http://cran.r-project.org/other-docs.html) for examples of analysis of 
covariance.  “Practical Regression and Anova using R” by Julian Faraway 
  has a chapter on the topic.

> Partha Protim Banerjee, Ph. D.
> Scientist - Corn Breeding
> Hytech Seed India Pvt. Ltd.
> ICRISAT, Bldg: 303, Room: 15-23
> Patancheru, Hyderabad
> India
> p.banerjee at hytechseed.in
> +91 9441079865
> +9140 30713306
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> and provide commented, minimal, self-contained, reproducible code. 

Chuck Cleland, Ph.D.
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