DearR Users,
I have a problem which I think you might be able to help. I have a dataframe
which I'm trying to "filter" following different groups I specified. It's a
little hard to explain, so here is an example:
My dataframe:
ESS DHP
1 EPB 22
2 SAB 10
3 SAB 20
4 BOJ 14
5 ERS 28
11 SAB 10
12 SAB 22
13 BOJ 26
20 SAB 10
21 SAB 22
22 BOJ 32
29 SAB 14
30 SAB 22
38 SAB 14
47 SAB 18
I'm trying to filter it by selecting a subgroup of ESS, for example:
softwood<- c("EPB","SAB")
So I can obtain:
NEW dataframe:
ESS DHP
1 EPB 22
2 SAB 10
3 SAB 20
11 SAB 10
12 SAB 22
20 SAB 10
21 SAB 22
29 SAB 14
30 SAB 22
38 SAB 14
47 SAB 18
(my real groups are actually bigger and so are my dataframe but you get the
idea).
I have looked at subset and aggregate but it doesn't work and the loop would be
totally inefficient. I'm sure there is a function in R that does something like
that but I couldn't find the proper "keyword" to search for it.
Thanks for your help,
Bastien
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