[R] a newbie question about "data"

[Rolf Turner]

On 8/11/2007, at 4:26 PM, envisage wrote:

> hi, I am reading Modern Applied Statistics with S 4th ed。
> page4 have these two lines:
>> library(MASS)
>> data(chem) # needed in R only
>  but I find withou the line " data(chem)"
> I can still access chem, isn't it?
> is it unnecessary or something i missed here?
> thanks for the replay in advance.

I don't think you're missing anything.  It appears that things have  
changed
and that ``chem'' has become what Prof. Ripley refers to as a ``first  
class
object'' in the MASS package.  That is it's ``there''.

If you start R and execute

	library(MASS)
	ls(2)

you will see ``chem'' amongst the names listed.

		cheers,

			Rolf Turner
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