Hi-
I am trying to create a table of values by adding pairs of vectors, but
am running into some problems. The problem is best expressed by a
simple example.
Starting with a data table "basis":
atom x y z
1 Cu 0.0 0.0 0.0
2 Cu 0.5 0.5 0.5
I want to add 0.5 0.5 0.5 (and also the 0 0 0 but it wouldn't change
the values below so I won't refer to it in the rest of the example) to a
list of vectors in the form of:
> latpoints
V1 V2 V3
1 0 0 0
2 0 0 1
3 0 0 2
4 0 0 3
5 0 1 1
so that I end up with a table such as:
V1 V2 V3
0.5 0.5 0.5
0.5 0.5 1.5
0.5 0.5 2.5
0.5 0.5 3.5
0.5 1.5 1.5
I've tried many variations on the following: (not just cat, but most of
the data/data.table options)
test = for(i in 1:5) {cat(basis[1,2:4] + latticemultipliers[i,],
append=TRUE)}
However, I either end up with an error telling me that cat doesn't
handle "type 'list' " or with a table with length of 1 such as:
x y z
2 0.5 1.5 1.5
Which is simply the last value that the loop calculates.
Does anyone know what function handles lists of the form I am using, or
have a better suggestion on how to get the form that I want.
Thanks in advance,
Seth Imhoff
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