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2004 Dec 17
3
If it's not a data.frame, matrix or vector, what is it?
Hi
Forgive my ignorance. I am selecting a column of a data.frame using the
column name, and I want to know what the resulting column "is". My data
frame is called "submin" and the column name is held in a variable
called "display.gname" Eg:
> is.data.frame(submin)
[1] TRUE
> is.data.frame(submin[,display.gname])
[1] FALSE
> is.matrix(submin[,display.gname])
[1] FALSE
> is.vector(submin[,display.gname])
[1] FALSE
> length(submin[,displa...