On 8/5/2009 4:16 PM, Steve Jaffe wrote:
Why when I assign 0 to an element of an integer vector does the type change
to numeric?
Because 0 is a numeric constant, not an integer constant. R doesn't
check the value, only the type: it's just as if you assigned 3.14159 to
that element as far as R is concerned.
If you want the integer constant use 0L.
Duncan Murdoch
Here is a particularly perplexing example:
v <- 0:10
v
[1] 0 1 2 3 4 5 6 7 8 9 10
class(v)
[1] "integer"
v[1] <- 0
class(v)
[1] "numeric" #!!
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