R help - Mar 2011 - help needed with histogram plotting

Dear all,

I am trying to plot 3 histograms on the same graph using the following
command.

hist(x,xlim=c(0,100))
hist(y,add=TRUE)
hist(z,add=TRUE)

The xlim of y is c(20,21) and that of z is c(99,99.5) , whereas the variable
x has xlim at c(0.5,2). Apparently, the graph end of displaying a line only,
corresponding to each histogram due to the wide range of the xlim and
tightness of the histograms. I need to plot them on the same graph for
comparison purpose. Can anyone suggest me a better way to do it? I am
wondering if there is any command in R, where we can break the x-axis into
several parts putting a 'break' at the discontinuity..what I mean is if
the
x-axis start from 0 and break at say 3, then start at 19 and break at 21 and
the last part starts at say 98. In this way, the histograms would be
prominent.

Thanks in advance.


Cassie

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Does this seems like a good stand in for now:

require(ggplot2)

x <- runif(100,1,2)
y <- runif(100,50,60)
z <- runif(100,99,100)

xyz <- melt(data.frame(x,y,z))

ggplot(xyz, aes(value)) +
geom_histogram() +
facet_grid(~ variable, scale="free")


On Sunday, March 6, 2011 at 9:25 PM, cassie jones wrote:
> Dear all,
> 
> I am trying to plot 3 histograms on the same graph using the following
> command.
> 
> hist(x,xlim=c(0,100))
> hist(y,add=TRUE)
> hist(z,add=TRUE)
> 
> The xlim of y is c(20,21) and that of z is c(99,99.5) , whereas the
variable
> x has xlim at c(0.5,2). Apparently, the graph end of displaying a line
only,
> corresponding to each histogram due to the wide range of the xlim and
> tightness of the histograms. I need to plot them on the same graph for
> comparison purpose. Can anyone suggest me a better way to do it? I am
> wondering if there is any command in R, where we can break the x-axis into
> several parts putting a 'break' at the discontinuity..what I mean
is if the
> x-axis start from 0 and break at say 3, then start at 19 and break at 21
and
> the last part starts at say 98. In this way, the histograms would be
> prominent.
> 
> Thanks in advance.
> 
> 
> Cassie
> 
>  [[alternative HTML version deleted]]
> 
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> 
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