Hello,
I am trying to compute a distance measure for the rows (var1) in a
sparse matrix:
require(Matrix)
dfx = xtabs(~ var1 + var2, data = df, sparse = T, drop.unused.levels = T
)
dm = dist(dfx)
on my data frame. Note that I am using the xtabs function from the
Matrix package, not R base. The thing is that length(unique(df$var1)) =
15000 and length(unique(df$var1)) = 1600, so the matrix is huge. Thus,
when I run dist(dfx), I get the error message:
Error: cannot allocate vector of size 885.1 Mb.
Anyone know how I might resolve the issue?
Thanks,
Solomon
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