Dear All,
I wish to calculate the Gini index (ineq from same package) and some other
indices for the diameter distribution of each plot (df dgtot).
dgtot:
IDPlot Diameter(cm)
1 4 34.0
2 4 23.0
3 4 38.0
...
51 5 16.0
52 5 8.0
53 5 9.0
...
5301 140 25.0
5302 140 12.0
5303 140 7.0
I use:
> aggregate(dgtot,by=list(dgtot$IDSupr),FUN=ineq(dsp))
where
dsp <- function(x) # compute frequency distribution for each plot
{
cd<-seq(5,max(x),by=2)
Fi <<- table(cut(x, br = seq(5, max(x)+1, 2), right = FALSE))
K <- length(names(Fi))
}
but, the result was:
Error in sort.int(x, na.last = na.last, decreasing = decreasing, ...) : 'x'
must be atomic
I'm at the beginning in R and I kindly request your experienced help.
Thank you,
Marius
Teodosiu
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