R help - May 2009 - how to adding colors to data points in scatter plot in R?

Does anybody know how to adding colors to data points in scatter plot in R?

I have the following R data frame -

Voter_Name, Education_years, Income, Registered
Ricky, 18, 40000, Y
Lisa, 20, 34000, N
Jon, 10, 35000, Y
...

I am doing a scatter plot in R for those data points - Income vs. 
EducationYears.

I would also like to using different colors to differentiate whether that 
data point is a Registered Voter or not.

Does anybody know how to adding colors to data points in scatter plot in R?

Thanks in advance!!

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Dear Tim,

Have a look at the ggplot2 package.

library(ggplot2)
ggplot(your.data.frame, aes(x = EducationYears, y = Income, colour Registered))
+ geom_point()

You find a lot of examples at the ggplot2 website:
http://had.co.nz/ggplot2/

HTH,

Thierry 


------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be

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than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of
data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Tim LIU
Verzonden: zaterdag 23 mei 2009 7:18
Aan: r-help at r-project.org
Onderwerp: [R] how to adding colors to data points in scatter plot in R?


Does anybody know how to adding colors to data points in scatter plot in
R?

I have the following R data frame -

Voter_Name, Education_years, Income, Registered Ricky, 18, 40000, Y
Lisa, 20, 34000, N Jon, 10, 35000, Y ...

I am doing a scatter plot in R for those data points - Income vs. 
EducationYears.

I would also like to using different colors to differentiate whether
that data point is a Registered Voter or not.

Does anybody know how to adding colors to data points in scatter plot in
R?

Thanks in advance!!

--
View this message in context:
http://www.nabble.com/how-to-adding-colors-to-data-points-in-scatter-plo
t-in-R--tp23681471p23681471.html
Sent from the R help mailing list archive at Nabble.com.

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Simply use the col paramater, with a factor to index the colors. 

Example: 
# generate some data
x <- rnom(100)
y <- rnorm(x)
z <- as.factor(rbinom(x,1,0.5))

# plot
plot(x,y, col=c('red','blue')[z])

HTH, 

Matthieu