ggplot2: Choosing colours
Dear Domenico,
It looks like my question wasn't very clear. I want to specify the
colours meself. Colour = z will use default colours and I'd like to
change those. I need to change them into red, green, blue and black
instead of pink, brown, green and blue.
The solution should have the layout of:
ggplot(data = dataset, aes(x = x, y = y, colour = z)) + geom_point()
But the colours of:
ggplot(data = dataset, aes(x = x, y = y, group = z)) + geom_point(colour
= c("red", "green", "blue", "black"))
Cheers,
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 op inbo.be
www.inbo.be
Do not put your faith in what statistics say until you have carefully
considered what they do not say. ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney
-----Oorspronkelijk bericht-----
Van: Domenico Vistocco [mailto:vistocco op unicas.it]
Verzonden: maandag 3 december 2007 14:08
Aan: ONKELINX, Thierry
CC: r-help op r-project.org
Onderwerp: Re: [R] ggplot2: Choosing colours
qplot(data=dataset, x, y, colour=z)
ONKELINX, Thierry wrote:
Dear useRs, I'm trying to specify the colour of a factor with ggplot2. The example below gets me close to what I want, but it's missing a legend. Any ideas? Thanks, Thierry library(ggplot2) dataset <- data.frame(x = rnorm(40), y = runif(40), z = gl(4, 10,
labels
= LETTERS[1:4])) ggplot(data = dataset, aes(x = x, y = y, group = z)) +
geom_point(colour
= c("red", "green", "blue", "black"))
------------------------------------------------------------------------
---- 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 op inbo.be www.inbo.be Do not put your faith in what statistics say until you have carefully considered what they do not say. ~William W. Watt A statistical analysis, properly conducted, is a delicate dissection
of
uncertainties, a surgery of suppositions. ~M.J.Moroney
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