[R] Way to rotate a histogram?

[Mike Lawrence]

In case anyone is still interested, a slight improvement is to plot
both density and normal distributions on top of the empirical
histogram (previous version plotted only density):

library(ggplot2)
test_data<-rnorm(100,mean=10,sd=4)
a = data.frame(obs = test_data,condition = 'None')
p1 = ggplot(
	data = a
	,aes(
		x = obs
	)
)+geom_histogram(
	aes(
		y = ..density..
		)
)+stat_density(
	mapping=aes(ymax=max(..density..))
	,geom='path'
	,colour='red'
)+stat_function(
	fun = dnorm
	,args = list(
		m=mean(a$obs)
		,sd=sd(a$obs)
	)
	,colour = 'green'
)+scale_x_continuous(
	limits = range(a$obs)
)+opts(
	panel.grid.minor = theme_blank()
	,panel.grid.major = theme_blank()
	,panel.background = theme_rect()
)+coord_flip(
)
p2 = ggplot(
	data = a
	,aes(
		x = condition
		,y = obs
	)
)+geom_boxplot(
)+scale_y_continuous(
	limits = range(a$obs)
)+scale_x_discrete(
	name = ''
	,labels = ''
)+opts(
	panel.grid.minor = theme_blank()
	,panel.grid.major = theme_blank()
	,panel.background = theme_rect()
	,axis.ticks = theme_blank()
	,axis.text.y = theme_blank()
	,axis.title.y = theme_blank()
)
p3 = ggplot(
	data = a
	,aes(
		sample = (obs-mean(obs))/sd(obs)
	)
)+stat_qq(
	distribution=qnorm
)+geom_abline(
	intercept=0
	,slope=1
)+opts(
	panel.grid.minor = theme_blank()
	,panel.grid.major = theme_blank()
	,panel.background = theme_rect()
	,axis.ticks = theme_blank()
	,axis.text.y = theme_blank()
	,axis.title.y = theme_blank()
)


print(p1,vp = viewport(width = 1/3,height = 1,x = 1/3*.5,y = .5))
print(p2,vp = viewport(width = 1/3,height = 1,x = 1/3+1/3*.5,y = .5))
print(p3,vp = viewport(width = 1/3,height = 1,x = 2/3+1/3*.5,y = .5))


-- 
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University

Looking to arrange a meeting? Check my public calendar:
http://tinyurl.com/mikes-public-calendar

~ Certainty is folly... I think. ~