Re: [R] Removing objects and clearing memory
How do I remove all objects except one in R? Here is another way. ls() gives you a list. get a number (n) of the item you'd like to keep, and then do: rm(list=ls()[n+1:last]) rm(list=ls()[1:n-1]) ls() should return only one object after this. -- View this message in context: http://r.789695.n4.nabble.com/Removing-objects-and-clearing-memory-tp3445763p3849780.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] Removing objects and clearing memory
Hey guys thanks very much for al your responses. It was very helpful.
Jim
On Tue, Apr 12, 2011 at 6:59 PM, Peter Ehlers ehl...@ucalgary.ca wrote:
On 2011-04-12 15:52, seeliger.c...@epamail.epa.gov wrote:
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
But he wanted to remove all objects ***except one***!!! So what's the
point of this answer?
I can't see any way except a rather round-about kludge to do what the
OP wants. ...
That might work. Or try this, replacing QQQ with the name of the object
you want to keep.
rm(list=ls()[!grepl('^QQQ$',ls())])
cur
package gdata has function keep() which does just what the OP asks for.
Peter Ehlers
--
Thanks,
Jim.
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Re: [R] Removing objects and clearing memory
On Wed, Apr 13, 2011 at 11:12 AM, Jim Silverton jim.silver...@gmail.comwrote:
Hey guys thanks very much for al your responses. It was very helpful.
Jim
On Tue, Apr 12, 2011 at 6:59 PM, Peter Ehlers ehl...@ucalgary.ca wrote:
On 2011-04-12 15:52, seeliger.c...@epamail.epa.gov wrote:
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
But he wanted to remove all objects ***except one***!!! So what's the
point of this answer?
I can't see any way except a rather round-about kludge to do what the
OP wants. ...
That might work. Or try this, replacing QQQ with the name of the object
you want to keep.
rm(list=ls()[!grepl('^QQQ$',ls())])
cur
package gdata has function keep() which does just what the OP asks for.
Peter Ehlers
--
Thanks,
Jim.
--
Thanks,
Jim.
[[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.
Re: [R] Removing objects and clearing memory
On 13.04.2011 00:39, Jim Silverton wrote: How do I remove all objects except one in R? rm(list=ls()) #will remove ALL objects __ 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.
Re: [R] Removing objects and clearing memory
On 13/04/11 09:49, Denis Kazakiewicz wrote:
On 13.04.2011 00:39, Jim Silverton wrote:
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
But he wanted to remove all objects ***except one***!!! So what's the
point of this answer?
I can't see any way except a rather round-about kludge to do what the
OP wants.
Create a function:
rmabo - function(x) {
# Remove all but one.
fff - tempfile()
save(list=deparse(substitute(x)),file=fff)
rm(list=ls(pos=1),pos=1)
load(fff,envir=.GlobalEnv)
unlink(fff)
}
Save this function (otherwise it will get removed when you remove
all objects except one, and rmabo is not the one, and will be lost):
save(rmabo,file=.rmabo.rda)
Whenever you want to remove all objects except one, attach the
data base in which you have saved rmabo. (You only need to do
the attaching once per session; if you like you could put the attach
command in your .Rprofile.)
attach(.rmabo.rda)
Then to remove all objects except melvin execute rmabo(melvin).
E.g.:
rm(list=ls)
ls()
character(0)
melvin - clyde - irving - fred - 42
ls()
[1] clyde fred irving melvin
rmabo(melvin)
ls()
[1] melvin
This seems to work. Anyone have any cleverer ideas to accomplish the
stated objective?
cheers,
Rolf Turner
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Removing objects and clearing memory
This should work also
data.frame(ls())
rm(list=ls()[-5]) #for instance
On 13.04.2011 01:45, Rolf Turner wrote:
On 13/04/11 09:49, Denis Kazakiewicz wrote:
On 13.04.2011 00:39, Jim Silverton wrote:
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
But he wanted to remove all objects ***except one***!!! So what's the
point of this answer?
I can't see any way except a rather round-about kludge to do what the
OP wants.
Create a function:
rmabo - function(x) {
# Remove all but one.
fff - tempfile()
save(list=deparse(substitute(x)),file=fff)
rm(list=ls(pos=1),pos=1)
load(fff,envir=.GlobalEnv)
unlink(fff)
}
Save this function (otherwise it will get removed when you remove
all objects except one, and rmabo is not the one, and will be lost):
save(rmabo,file=.rmabo.rda)
Whenever you want to remove all objects except one, attach the
data base in which you have saved rmabo. (You only need to do
the attaching once per session; if you like you could put the attach
command in your .Rprofile.)
attach(.rmabo.rda)
Then to remove all objects except melvin execute rmabo(melvin).
E.g.:
rm(list=ls)
ls()
character(0)
melvin - clyde - irving - fred - 42
ls()
[1] clyde fred irving melvin
rmabo(melvin)
ls()
[1] melvin
This seems to work. Anyone have any cleverer ideas to accomplish the
stated objective?
cheers,
Rolf Turner
[[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.
Re: [R] Removing objects and clearing memory
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
But he wanted to remove all objects ***except one***!!! So what's the
point of this answer?
I can't see any way except a rather round-about kludge to do what the
OP wants. ...
That might work. Or try this, replacing QQQ with the name of the object
you want to keep.
rm(list=ls()[!grepl('^QQQ$',ls())])
cur
--
Curt Seeliger, Data Ranger
Raytheon Information Services - Contractor to ORD
seeliger.c...@epa.gov
541/754-4638
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Removing objects and clearing memory
On 2011-04-12 15:52, seeliger.c...@epamail.epa.gov wrote:
How do I remove all objects except one in R?
rm(list=ls()) #will remove ALL objects
But he wanted to remove all objects ***except one***!!! So what's the
point of this answer?
I can't see any way except a rather round-about kludge to do what the
OP wants. ...
That might work. Or try this, replacing QQQ with the name of the object
you want to keep.
rm(list=ls()[!grepl('^QQQ$',ls())])
cur
package gdata has function keep() which does just what the OP asks for.
Peter Ehlers
__
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.
Re: [R] Removing objects and clearing memory
#replace v with whatever rm(list=(ls()[ls()!=v])) -- View this message in context: http://r.789695.n4.nabble.com/Removing-objects-and-clearing-memory-tp3445763p3445865.html Sent from the R help mailing list archive at Nabble.com. __ 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.
