Hi R users.

I have a problem with function strata in sampling packages.

> st0 = strata(dom, stratanames="stratas", size=sample.size,
method="systematic",pik, FALSE)
Error in sort.list(y) : 'x' must be atomic for 'sort.list'
Have you called 'sort' on a list?

In previous version of R 2.9.1 and previous version of package sampling this
code worked well and now I don't know what is a problem?
Any ideas how to solve this problem will be very useful?


Thanks in advance

Andrija

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