Try this:
x[1,, drop = FALSE]
On Tue, Jul 21, 2009 at 1:46 PM, Vadim Ogranovich <
vogranov...@jumptrading.com> wrote:
> Dear R-help,
>
> When the result of a matrix subscription degenerates to a scalar the names
> implied by the dimnames are discarded.
>
> > x <- matrix(0, 1, 1, dimnames=list('a', 'x'))
>
> ## below I expected result to have names='x', it's not
> > x[1,]
> [1] 0
>
> ## below I expected result to have names='a', it's not
> > x[,1]
> [1] 0
>
> This is probably a side effect of 'drop' applied to a 1*1 matrix, is there
> an elegant way around?
>
> One possibility could be to allow the 'drop' arg in '[' to take numerical
> values (in addition to bool), which would be interpreted as dimensions to
> drop.
>
> Thanks,
> Vadim
>
> Note: This email is for the confidential use of the named addressee(s) only
> and may contain proprietary, confidential or privileged information. If you
> are not the intended recipient, you are hereby notified that any review,
> dissemination or copying of this email is strictly prohibited, and to please
> notify the sender immediately and destroy this email and any attachments.
> Email transmission cannot be guaranteed to be secure or error-free. Jump
> Trading, therefore, does not make any guarantees as to the completeness or
> accuracy of this email or any attachments. This email is for informational
> purposes only and does not constitute a recommendation, offer, request or
> solicitation of any kind to buy, sell, subscribe, redeem or perform any type
> of transaction of a financial product.
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
