I am new at this. The two data sets don't have color variable just paired data. How should I structure the data sets in R?
Joe Ricci

________________________________
From: William Revelle [via R] <ml-node+s789695n3871355h20@n4.nabble.com>
To: Joe Ricci
Sent: Tue Oct 04 11:18:20 2011
Subject: Re: how do i put two scatterplots on same graph



If the data are from one data.frame (e.g., the iris data set), then simply label the red and white flowers with different colors:
e.g.,

with the iris data set

plot(iris$Sepal.Length,iris$Sepal.Width,col=c("red","blue","black")[iris$Species],pch=c(16:18)[iris$Species])

Bill




On Oct 4, 2011, at 4:20 AM, Paul Hiemstra wrote:

> On 10/04/2011 06:19 AM, jricci wrote:
>> Have two sets of scatterplot data
>> hypothetically
>> a) stem lenght vs number of petals in red flowers
>> b) stem lenght vs number of petals in white flowers
>>
>> want to place on same scatter plot with same x,y axis but different collored
>> markers
>>
>> How do I do this in R
>>
>> --
>> View this message in context: http://r.789695.n4.nabble.com/how-do-i-put-two-scatterplots-on-same-graph-tp3870030p3870030.html
>> Sent from the R help mailing list archive at Nabble.com.
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>
> Hi,
>
> You could take a look at the ggplot2 package.
>
> good luck,
> Paul
>
> --
> Paul Hiemstra, Ph.D.
> Global Climate Division
> Royal Netherlands Meteorological Institute (KNMI)
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