Hi all.
I have a factor variable distributed over time. I am looking for an elegant
way to code duration of a state. Suppose,
>rainfall.shocks <- factor(sample(c(1,2,3), size = 15, replace = TRUE, prob
>= unit.p),
+ label = c("Drought", "Normal", "High"))
>
>rainfall.shocks
[1] Normal High High Drought Normal Normal High Normal Drought
[10] Normal Drought Normal Normal Normal Normal
So capture the duration of say drought, I'd need a variable that is able to
keep track of rainfall.shocks as well as its past values. I was wondering if
there is any obvious way to do this. the Drought variable in this case would
have values
0 0 0 1 0 0 0 0 1 0 1 0 0 0 0
many thanks for the suggestions you are likely to make.
Alexander Nervedi
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
