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spec3
2004 Dec 18
4
variables - data-structure
dear R-friends,
i`ve got a large dataset of vegetation-samples with about 500
variables(=species) in the following format:
1 spec1
1 spec23
1 spec54
1 spec63
2 spec1
2 spec2
2 spec253
2 spec300
2 spec423
3 spec20
3 spec88
3 spec121
3 spec200
3 spec450
.
.
this means: sample 1 (grassland) with the species (=spec) 1, 23, 54, 63
is it possible to get a following data-structure for further analysis?
1 2 3 ......
spec1 1 1 0
spec2 0 1 0
spec3
...
spe...