weighted cumulative distribution with ggplot2

I think I have my answer... ggplot2 uses ecdf which does NOT allow
weightings...
so there is no warning or error, but still the resulting plot do not
take into account the command weight=weight

Hope that helps someone, just in case ;-)

On 8 October 2012 15:40, Francesco <cariboupad at gmx.fr> wrote:

Dear all,

I am trying to draw a weighted cumulative distribution (as defined
here http://rss.acs.unt.edu/Rdoc/library/spatstat/html/ewcdf.html)
with ggplot2

however the syntax

temp<-qplot(X,weight=weight,data=data,stat = "ecdf", geom =
"step",colour=factor(year))

seems not to produce exactly the right figure (the values seems higher
at some points)... I am wrong in the weight definition?

The data is like the following

X     Weight Year
0      2         2001
0      1         2001
1      5         2001
2      1         2001
2      3         2001
2      2         2002
3.. etc

Any ideas ?
Many thanks in advance