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fourcomplexes
2006 Nov 03
1
man page for as.matrix for data frames outdated?
...<- data.frame(a=fourLogicals, b=fourInts)
> storage.mode(as.matrix(df2))
[1] "integer"
> fourDoubles <- rep(pi,4)
> df3 <- data.frame(c=fourDoubles, a=fourLogicals, b=fourInts)
> storage.mode(as.matrix(df3))
[1] "double"
> fourComplexes <- (-1:2)+3i
> df4 <- data.frame(a=fourLogicals, d=fourComplexes, b=fourInts,
c=fourDoubles)
> storage.mode(as.matrix(df4))
[1] "complex"
If one column is of mode character, then 'as.matrix' will effectively
return a character matrix:
> df5 &...