R help - Jan 2006 - how to get the row name?

Hi R-listers,

I have a simple question about a data frame.  

I sorted a data set by one of the variable in some condition (eg. X>=0),  the
followed is part of the achieved. I was wondering how can I get the row name, i.
e.   (1202,  2077 , 2328,  3341,...  ) and save them as a vector.     Thanks!

			  Tag  Species     X     Y Dbh3 Recr4 mort slope elevation aspect    SA   SR 
dist1     dist2     dist3
1202    19103     316 856.0 430.3   21     4    1  9.87    151.42  60.08 25.38
1.02 0.2236068 0.7211103 1.3601471
2077    29893     316 935.4 482.7   28     4    1  5.66    137.28  13.86 25.14
1.01 0.6403124 0.8944272 1.0630146
2328    32989     316 910.7 301.5   12     4    1  8.07    137.69  86.16 25.26
1.01 0.3000000 1.2806248 1.3038405
3341    45198     316 975.2   2.4  144     4    1  2.95    121.10 173.60  0.00
0.00 0.5656854 1.2727922 1.3416408
...

Regards,

Leaf

rownames(subset(mydata, X >=0))

?rownames

Leaf Sun wrote:
> Hi R-listers,
> 
> I have a simple question about a data frame.  
> 
> I sorted a data set by one of the variable in some condition (eg. X>=0),
the followed is part of the achieved. I was wondering how can I get the row
name, i. e.   (1202,  2077 , 2328,  3341,...  ) and save them as a vector.    
Thanks!
> 
> 			  Tag  Species     X     Y Dbh3 Recr4 mort slope elevation aspect    SA 
SR     dist1     dist2     dist3
> 1202    19103     316 856.0 430.3   21     4    1  9.87    151.42  60.08
25.38 1.02 0.2236068 0.7211103 1.3601471
> 2077    29893     316 935.4 482.7   28     4    1  5.66    137.28  13.86
25.14 1.01 0.6403124 0.8944272 1.0630146
> 2328    32989     316 910.7 301.5   12     4    1  8.07    137.69  86.16
25.26 1.01 0.3000000 1.2806248 1.3038405
> 3341    45198     316 975.2   2.4  144     4    1  2.95    121.10 173.60 
0.00 0.00 0.5656854 1.2727922 1.3416408
> ...
> 
> Regards,
> 
> Leaf
> 
> 
> 
> ------------------------------------------------------------------------
> 
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Em Seg 30 Jan 2006 18:36, Chuck Cleland escreveu:
> rownames(subset(mydata, X >=0))
Hi,

I am new to R and read this list to learn. It is amazing how frequently new  
functions pop in messages. Useful and timesaving functions like subset 
(above) must be documented somewhere.

Is there a glossary of functions?

-- 

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