On Wednesday 08 November 2006 11:41 am, Gabor Grothendieck wrote:
> .subset and .subset2 are equivalent to [ and [[ except that
> dispatch does not take place. See ?.subset
>
Thank you Gabor !
I made an experiment and got rid of
class(x) <- attr(x, "row.names") <- NULL
while replacing all
.subset and .subset2 are equivalent to [ and [[ except that
dispatch does not take place. See ?.subset
On 11/8/06, Vladimir Dergachev <[EMAIL PROTECTED]> wrote:
> On Wednesday 08 November 2006 3:21 am, Prof Brian Ripley wrote:
> >
> > > So far I was not able to figure out why this is necessary -
On Wednesday 08 November 2006 3:21 am, Prof Brian Ripley wrote:
>
> > So far I was not able to figure out why this is necessary -
> > could anyone help ?
>
> You need to remove the class to avoid recursion: a few lines later x[i]
> needs to be a call to the primitive and not the data frame method.
'[' is the 'subscript' or 'extraction', not 'subscription' operator: this
is also called 'indexing', as in 'An Introduction to R'.
On Mon, 6 Nov 2006, Vladimir Dergachev wrote:
> I was looking at the data frame subscription operator (attached in the end
> of this e-mail) and got puzzled by the
Hi all,
I was looking at the data frame subscription operator (attached in the end
of this e-mail) and got puzzled by the following line:
class(x) <- attr(x, "row.names") <- NULL
This appears to set the class and row.names attributes of the incoming data
frame to NULL. So far I was no
