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2001 Dec 12
1
can't vectorize an expression
Dear R support network
I have a problem that is driving me crazy.
I have a dataframe with about 74000 landscapes which I call "land". A
landscape is a 2km -by- 2km square.
Land has three columns: land$lat, land$long, and land$description.
The last one holds a NON-unique (integer) description of each
landscape. There are maybe 100 distinct descriptions. Identifying
landscapes that