R help - Sep 2004 - histograms with more than one variable

Hello.  I want to plot the distribution of a continuous variable (y) in
each of two groups on the same graph as histograms.  I suppose one could
call this a 2-d histogram?  Can this be done in R?  Here is a typical
data.set:

 

y          group

1.2       1

3.3       1

2.4       2

5.7       1

0.2       2

etc.

 

Bill Shipley

Subject Matter Editor, Ecology

North American Editor, Annals of Botany

Département de biologie, Université de Sherbrooke,

Sherbrooke (Québec) J1K 2R1 CANADA

Bill.Shipley@USherbrooke.ca

 <http://callisto.si.usherb.ca:8080/bshipley/>
http://callisto.si.usherb.ca:8080/bshipley/

 


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Sounds like you want something similar to:

library(lattice)
y <- rnorm(40)
group <- rep(1:2, each=20)
histogram(~y | group)

Andy
> From: Bill Shipley
> 
>  
> 
> y          group
> 
> 1.2       1
> 
> 3.3       1
> 
> 2.4       2
> 
> 5.7       1
> 
> 0.2       2
> 
> etc.
> 
>  
> 
> Bill Shipley
> 
> Subject Matter Editor, Ecology
> 
> North American Editor, Annals of Botany
> 
> D??partement de biologie, Universit?? de Sherbrooke,
> 
> Sherbrooke (Qu??bec) J1K 2R1 CANADA
> 
> Bill.Shipley at USherbrooke.ca
> 
 <http://callisto.si.usherb.ca:8080/bshipley/>
http://callisto.si.usherb.ca:8080/bshipley/

 


	[[alternative HTML version deleted]]

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