[Rd] RE: [R] Removing "row.names"

[Kurt Hornik]

>>>>> Yves Gauvreau writes:

> Try this
> sampled <- data.frame(sample(rnorm(100),2))
> colnames(sampled) <- " " # Or preferably something meaningful
> sampled

> 1 1.777068
> 2 0.937161

Ouch!

This *surely* is a bug.  How can it be possible to remove the variable
names in a data frame?

It may be time to reconsider what
	rownames
	colnames
	case.names
	variable.names
do for data frames.

But in fact, both

	names(sampled) <- " "
and
	dimnames(sampled)[[2]] <- " "

happily introduce non-unique variable names in the data frame.

Is the rule that row.names and names must be unique still on?

Argh ...

-k
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