cumulative distributions for several groups

[erich studerus]

Hello,

I want to show the cumulative distribution functions of several groups
within one plot. When I use the geom_step function the lines get
connected between different groups. Is there a way to avoid this? I
want geom_step behaving the same way as geom_line. Here's an example:

x <- sort(rnorm(47))
df1<-data.frame(y=x,x=seq_along(x),z='A')
x <- sort(rnorm(47))
df2<-data.frame(y=x,x=seq_along(x),z='B')
df <-rbind(df1,df2)
qplot(data=df,x=x,y=y,colour=z)+geom_step() #lines get scrambled
qplot(data=df,x=x,y=y,colour=z)+geom_line() #lines from different
groups are separated

Thanks a lot!

[David Kahle]

Hi Erich -

Attached is a function I just put together which will plot empiricals
for a vector of samples or a list containing many samples (which is
what I think you're looking for). The function is in the file
attached along with some examples on the bottom. Let me know how it
goes!

Cheers
david.

[erich studerus]

Thanks a lot! I managed to adapt your code for my special needs.

Cheers

Erich

>  ggecdf.R
> 1KAnzeigenHerunterladen

[hadley wickham]

And I've just fixed the bug in the development version :)
Hadley

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