R help - Oct 2008 - Multiple hist(ograms) - One plot

Hello,
I am trying to plot multiple histograms with the same scales, etc into one
plot. The commands below produce a 3 page PDF with each histogram occupying
the upper right quadrant. And use slightly different scales on the X and Y
axes.
> s21 <- dat[dat$sc_recov=="21",]
> s21.ED <- subset(s21, select=(bbED))
> s31 <- all[all$sc_recov=="31",]
> s31.ED <- subset(s31, select=(bbED))
> s41 <- all[all$sc_recov=="41",]
> s41.ED <- subset(s41, select=(bbED))
> pdf("234_1_ED.pdf")
> par(mfrow = c(2, 2), oma = c(0, 0, 2, 0))
> hist(s21.ED) + hist(s31.ED) + hist(s41.ED)
> dev.off()
Also, for example if I add something like col="x", or
main="x" to the
hist(x, ...) nothing appears on the plot.  ?

Please advise,
Thank you kindly,
M Just

	[[alternative HTML version deleted]]

Michael Just <mgjust <at> gmail.com> writes:
> I am trying to plot multiple histograms with the same scales, etc into one
> plot. The commands below produce a 3 page PDF with each histogram occupying
> the upper right quadrant. And use slightly different scales on the X and Y
> axes.
I suggest that you forget hist (="old style" graphics) for this type
of job and
use trellis graphics in package lattice, function histogram instead. True,
lattice has a bit of a learning curve, but I promise you it pays. No manual
subset selection, and "same scaling" is the default; you will even
have some
problems when you want to force different scaling.

See http://dsarkar.fhcrc.org/lattice/book/figures.html

You could also have a look a ggplot2, which takes and elegant approach, but
still has a few rough edges.

Dieter

Dear Michael,

Try ggplot2. Use something like

install.packages("ggplot2")
library(ggplot2)
recov <- 0:2
n <- 1000
all <- data.frame(bbED = rnorm(3 * n, mean = recov), recov factor(rep(recov,
n)))
ggplot(data = all, aes(x = bbED)) + geom_histogram() + facet_grid(. ~
recov)
ggplot(data = all, aes(x = bbED)) + geom_histogram() + facet_grid(recov
~ .)
ggplot(data = all, aes(x = bbED, colour = recov)) + geom_density()

You'll find more information on ggplot2 at 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 op inbo.be 
www.inbo.be 

To call in the statistician after the experiment is done may be no more
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 op r-project.org [mailto:r-help-bounces op r-project.org]
Namens Michael Just
Verzonden: donderdag 2 oktober 2008 7:29
Aan: r-help op r-project.org
Onderwerp: [R] Multiple hist(ograms) - One plot

Hello,
I am trying to plot multiple histograms with the same scales, etc into
one
plot. The commands below produce a 3 page PDF with each histogram
occupying
the upper right quadrant. And use slightly different scales on the X and
Y
axes.
> s21 <- dat[dat$sc_recov=="21",]
> s21.ED <- subset(s21, select=(bbED))
> s31 <- all[all$sc_recov=="31",]
> s31.ED <- subset(s31, select=(bbED))
> s41 <- all[all$sc_recov=="41",]
> s41.ED <- subset(s41, select=(bbED))
> pdf("234_1_ED.pdf")
> par(mfrow = c(2, 2), oma = c(0, 0, 2, 0))
> hist(s21.ED) + hist(s31.ED) + hist(s41.ED)
> dev.off()
Also, for example if I add something like col="x", or
main="x" to the
hist(x, ...) nothing appears on the plot.  ?

Please advise,
Thank you kindly,
M Just

	[[alternative HTML version deleted]]

______________________________________________
R-help op r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer 
en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is
door een geldig ondertekend document. The views expressed in  this message 
and any annex are purely those of the writer and may not be regarded as stating 
an official position of INBO, as long as the message is not confirmed by a duly 
signed document.