Dear all,
   I have a few extra questions regarding this. Below is my code.
My questions are:
 (1), How can I remove the labels, tick marks and numbers, and the word
"density" for the histgrams.
  (2) On the top right corner, there is a empty grid. How can I remove it.

Thank you in advance.
      Hannah



require(ggplot2)
require(gridExtra)
x <- rnorm(10000,10, 2)
y <- rnorm(10000, 20, 6)
##x<-xbar
##y <- ybar
xy<-data.frame(x,y)

xhist  <-  ggplot(xy, aes(x=x)) +
        geom_histogram(aes(y=..density..), fill="red", colour="black")+
        geom_density(colour="black", adjust=4) +
        opts(title="")
yhist  <-  ggplot(xy, aes(x=y)) +
        geom_histogram(aes(y=..density..), fill="blue", colour="black")+
        geom_density(colour="black", adjust=4) +
        opts(title="") +
        coord_flip()
none <- qplot(x,y, data=xy) + geom_blank()

empty <- ggplot()+geom_point(aes(1,1), colour="white")+
opts(axis.ticks=theme_blank(),
panel.background=theme_blank(),
axis.text.x=theme_blank(),
axis.text.y=theme_blank(),
axis.title.x=theme_blank(), axis.title.y=theme_blank())
grid.arrange(xhist, empty, none, yhist, ncol=2, nrow=2, widths=c(3, 1),
 heights=c(1, 3))










2012/8/7 li li <hannah.hlx@gmail.com>

> Please ignore my previous message. The limits are correct.
>     Thanks again.
>       Hannah
>
> 2012/8/7 li li <hannah.hlx@gmail.com>
>
>> Hi John,
>>   Is it possible to set the xlim and ylim in the histograms. It seems
>> that the limits are not the true ranges.
>>   Thanks.
>>      Hannah
>>
>>  2012/8/7 li li <hannah.hlx@gmail.com>
>>
>>> Thanks John.
>>>
>>>
>>> 2012/8/7 John Kane <jrkrideau@inbox.com>
>>>
>>>> I cannot see any obvious way to do this.  Ben Gunter's suggestion re
>>>> layout makes sense.  Here is a version using grid and ggplot2.  Note I
>>>> shamelessly stole code to due it.
>>>>
>>>>
>>>> library(ggplot2)
>>>> library(grid)
>>>>
>>>> dd <- data.frame(x =  rnorm(1000, 10, 10),
>>>>                    y =  rnorm(1000, 3, 20))
>>>> #  From https://stat.ethz.ch/pipermail/r-help/2011-June/280588.html
>>>>
>>>> p1  <-  ggplot(dd, aes(x=x)) +
>>>>         geom_histogram(aes(y=..density..), fill="red", colour="black")+
>>>>         geom_density(colour="black", adjust=4) +
>>>>         opts(title="Normal Random Sample")
>>>>
>>>> p2  <-  ggplot(dd, aes(x=y)) +
>>>>         geom_histogram(aes(y=..density..), fill="blue", colour="black")+
>>>>         geom_density(colour="black", adjust=4) +
>>>>         opts(title="Normal Random Sample") +
>>>>         coord_flip()
>>>>
>>>> # From StackOverflow
>>>> http://stackoverflow.com/questions/9490482/combined-plot-of-ggplot2-not-in-a-single-plot-using-par-or-layout-functio
>>>>
>>>> # this simplifies the vp statement
>>>> # otherwise we would have to use something like
>>>> # print(plot5 , vp = viewport(layout.pos.row = 2, layout.pos.col = 1:2))
>>>> # and so on for the rest of the plots.
>>>> vplayout <- function(x, y) viewport(layout.pos.row = x, layout.pos.col
>>>> = y)
>>>>
>>>> grid.newpage()
>>>> pushViewport(viewport(layout = grid.layout(2, 1)))
>>>> print(p1, vp = vplayout(1, 1))
>>>> print(p2, vp = vplayout(2, 1))
>>>>
>>>>
>>>>
>>>>
>>>> John Kane
>>>> Kingston ON Canada
>>>>
>>>>
>>>> > -----Original Message-----
>>>> > From: hannah.hlx@gmail.com
>>>> > Sent: Mon, 6 Aug 2012 15:40:55 -0400
>>>> > To: r-help@r-project.org
>>>> > Subject: [R] Overlay Histogram
>>>> >
>>>> > Dear all,
>>>> >   For two sets of random variables, say, x <-  rnorm(1000, 10, 10)
>>>> and  y
>>>> > <- rnorm(1000. 3, 20).
>>>> > Is there any way to overlay the histograms (and density curves) of x
>>>> and
>>>> > y
>>>> > on the plot of y vs. x?
>>>> > The histogram of x is on the x axis and that of y is on the y axis.
>>>> >   The density curve here is to approximate the shape of the
>>>> distribution
>>>> > and does not have to have area 1.
>>>> >    Thank you in advance.
>>>> >       Hannah
>>>> >
>>>> >       [[alternative HTML version deleted]]
>>>> >
>>>> > ______________________________________________
>>>> > R-help@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<http://www.r-project.org/posting-guide.html>
>>>> > and provide commented, minimal, self-contained, reproducible code.
>>>>
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>>>>
>>>
>>
>

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