[R] data manipulation

[Cowpertwait, Paul]

Antonio,

This seems to work (but you may want to adjust the resulting column names):

length2.dat <- data.frame(cbind(length1.dat$LT[-c(5,6)],
length1.dat$LF[-c(5,6)]))

_____________________________________

Paul S.P. Cowpertwait
IIMS, Massey University, Albany, 
Private Bag 102 904 
North Shore Mail Centre
Auckland, NZ
Tel (+64) (9) 443 9799 ext 9488

http://www.massey.ac.nz/~pscowper
_____________________________________
 

-----Original Message-----
From: Antonio Olinto [mailto:aolinto at bignet.com.br]
Sent: Wednesday, 5 September 2001 10:51
To: R-help
Subject: [R] data manipulation


Dear R-list members,

Here goes a simple question that I could not solve: I want to delete a row
in a data frame.
Suppose rows 5 and 9 are out-layers and I want to take them out from a data
frame named "length1.dat":

       LT   LF
 1    335 320
 2    340 335
 3    360 355
 4    370 365
 5    376 310
 6    388 378
 7    395 385
 8    400 390
 9    400 410
10   405 392

I tried to make another data frame:

length2.dat <- data.frame(subset(length1.dat,select=-[5,])) # to take out
the 5th row

and also ... select= [-c(5,)] ... [-5,-9] ... many other variations, without
success.

I’d be thankful to receive any help. I have printed Maindonald’s “Using R
...” and Verzani’s “simpleR” but I could not find any hint on this matter.

Thanks in advance,

Antonio Olinto
Fisheries Institute
Sao Paulo - BRAZIL


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