R devel - Aug 2008 - matrix name

Hello,

Presently, we are able to add additionnal info to a matrix
thanks to the nice comment() and attr() functions.
Maybe I miss some other functions ?

Since there is a always a little remaining place on the
top left when one print a matrix,
I was wondering if it won't be interesting to offer the
possibility to show some information here,

I'm thinking on something like :

 > attr(M, 'topleft') = 'city\prms';
 > M
city\prms      a    b    c
seattle        1    3    5
vancouver      2    4    6

I don't know if it's easily feasible and even if it seems
interesting enough ... so sorry if it is a silly idea.

All the best
Vincent

Try this:
> matrix(1:9, 3, dim = list(x = letters[1:3], y = LETTERS[1:3]))
   y
x   A B C
  a 1 4 7
  b 2 5 8
  c 3 6 9


On Sat, Aug 9, 2008 at 12:34 PM, mel <mel at altk.com>
wrote:
> Hello,
>
> Presently, we are able to add additionnal info to a matrix
> thanks to the nice comment() and attr() functions.
> Maybe I miss some other functions ?
>
> Since there is a always a little remaining place on the
> top left when one print a matrix,
> I was wondering if it won't be interesting to offer the
> possibility to show some information here,
>
> I'm thinking on something like :
>
>> attr(M, 'topleft') = 'city\prms';
>> M
> city\prms      a    b    c
> seattle        1    3    5
> vancouver      2    4    6
>
> I don't know if it's easily feasible and even if it seems
> interesting enough ... so sorry if it is a silly idea.
>
> All the best
> Vincent
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

>>>>> Vincent Nijs <mel at altk.com>
>>>>>     on Sat, 09 Aug 2008 18:34:09 +0200 writes:
    >>> Hello,
    >>> Presently, we are able to add additionnal info to a matrix
    >>> thanks to the nice comment() and attr() functions.
    >>> Maybe I miss some other functions ?

    >>> Since there is a always a little remaining place on the
    >>> top left when one print a matrix,
    >>> I was wondering if it won't be interesting to offer the
    >>> possibility to show some information here,

    >>> I'm thinking on something like :

    >> attr(M, 'topleft') = 'city\prms';
    >> M
    >>> city\prms      a    b    c
    >>> seattle        1    3    5
    >>> vancouver      2    4    6

Well,  dimnames  can be named :

  > matrix(1:6, 2,3, dimnames=list(rows=c("r1","r2"),
cols=c("A","B","C")))
      cols
  rows A B C
    r1 1 3 5
    r2 2 4 6

This implements (something better I think than)  what you want.
The *printing* though is slightly different (since more
flexible).

Martin 

    >>> I don't know if it's easily feasible and even if it
seems
    >>> interesting enough ... so sorry if it is a silly idea.

    >>> All the best
    >>> Vincent

Martin Maechler a ?crit :
> Well,  dimnames  can be named :
Thanks Martin and Gabor for the trick.
And apologies for not thinking on it.
Thanks
Vincent