Adaikalavan Ramasamy [EMAIL PROTECTED] writes:
Another option is pruneLevels() in library nlme.
x - factor( c( 0,1,2,1,2 ) )
x
[1] 0 1 2 1 2
Levels: 0 1 2
pruneLevels( x[-1] )
[1] 1 2 1 2
Levels: 1 2
That function has been removed from the latest release of the nlme
package because
A more transparent solution is
old.factor[1:3, drop = TRUE]
That has worked for a long time, but apparently not been documented in R
until 1.7.1 (docs added a couple of hours before release). So you could do
(probably, since there are some bugs prior to 1.8.0)
crb[] - lapply(crb, function(x)
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Prof
Brian Ripley
Sent: Friday, June 27, 2003 1:35 AM
To: Marc Schwartz
Cc: [EMAIL PROTECTED]; 'Nick Bond'
Subject: RE: [R] dropping factor levels in subset
A more transparent solution is
old.factor[1:3
Jun 2003, Marc Schwartz wrote:
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Prof
Brian Ripley
Sent: Friday, June 27, 2003 1:35 AM
To: Marc Schwartz
Cc: [EMAIL PROTECTED]; 'Nick Bond'
Subject: RE: [R] dropping factor levels in subset
] dropping factor levels in subset
A more transparent solution is
old.factor[1:3, drop = TRUE]
That has worked for a long time, but apparently not been
documented in R
until 1.7.1 (docs added a couple of hours before release). So
you could do
(probably, since there are some bugs
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Prof
Brian Ripley
Sent: Friday, June 27, 2003 12:11 PM
To: Marc Schwartz
Cc: [EMAIL PROTECTED]; 'Nick Bond'
Subject: RE: [R] dropping factor levels in subset
Re: [, drop=TRUE} for factors
It's been in S
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Nick Bond
Sent: Thursday, June 26, 2003 10:08 PM
To: [EMAIL PROTECTED]
Subject: [R] dropping factor levels in subset
Dear all,
I've taken a subset of data from a data frame using
crb-subset(all.raw, creek
