[R] pairwise comparisons among treatments

[kevin Lin]

Hello R listing,

I did two-way anova on lm. Further question the investigator 
interested in is what two treatments are different?

I am looking for a command which could do pairwise comparison for 
every treatment.

Could anyone help me out?

Thanks a bunch

Kevin

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Re: [R] pairwise comparisons among treatments

[kevin Lin]

Hello Bert,

Thanks for your response. I don't know why I am getting following 
error messages. I use version of R version 2.1.1, 2005-06-20, 
powerpc-apple-darwin7.9.0  in Mac OS X version 10.3.8.
I did try to load following packages before, but it failed.

help.search(pairwise comparison)
Error in help.search(pairwise comparison) :
could not find package 'arrayQuality.1'
In addition: Warning messages:
1: no Rd contents for package 'R2HTML' in 
'/Library/Frameworks/R.framework/Resources/library' in: 
help.search(pairwise comparison)
2: no Rd contents for package 'affylmGUI' in 
'/Library/Frameworks/R.framework/Resources/library' in: 
help.search(pairwise comparison)

Thanks.

Kevin

help.search('pairwise comparison')

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA

The business of the statistician is to catalyze the scientific learning
process.  - George E. P. Box




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