On Fri, 24 Sep 2010, Prof Brian Ripley wrote:
On Thu, 23 Sep 2010, Peter Ehlers wrote:
On 2010-09-21 5:51, Nikhil Kaza wrote:
example(factor)
iris1$Species<- factor(iris1$Species, drop=T)
will get you what you need.
Hmm, doesn't work for me. ?factor does not list a 'drop='
argument.
I s
On Thu, 23 Sep 2010, Peter Ehlers wrote:
On 2010-09-21 5:51, Nikhil Kaza wrote:
example(factor)
iris1$Species<- factor(iris1$Species, drop=T)
will get you what you need.
Hmm, doesn't work for me. ?factor does not list a 'drop='
argument.
I suspect
iris1$Species <- [iris1$Species, drop=TR
On 2010-09-21 5:51, Nikhil Kaza wrote:
example(factor)
iris1$Species<- factor(iris1$Species, drop=T)
will get you what you need.
Hmm, doesn't work for me. ?factor does not list a 'drop='
argument.
-Peter Ehlers
Nikhil Kaza
Asst. Professor,
City and Regional Planning
University of North
Hi,
I agree with you that levels should not be automatically dropped after
subsetting.
However, I think there should/can be an extra argument to make it
possible (the default being no dropping). I have no example in mind, but
I guess it is possible that sometimes, one want to show only some
1.408.8111
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
> project.org] On Behalf Of Ivan Calandra
> Sent: Tuesday, September 21, 2010 7:23 AM
> To: r-help@r-project.org
> Subject: Re: [R] removed data is still there!
>
> Hi,
&g
Ivan Calandra uni-hamburg.de> writes:
>
> Hi,
>
> I knew about that way already, with factor(). Isn't there another
> possibility, directly at the subsetting step? That would be of great help
> iris1 <- iris[iris$Species == 'setosa',] ## I mean here
>
> Ivan
Not as far as I know.
See
Hi,
I knew about that way already, with factor(). Isn't there another
possibility, directly at the subsetting step? That would be of great help
iris1 <- iris[iris$Species == 'setosa',] ## I mean here
Ivan
Le 9/21/2010 15:14, David Winsemius a écrit :
>
> On Sep 21, 2010, at 9:04 AM, David
On Sep 21, 2010, at 9:04 AM, David Winsemius wrote:
On Sep 21, 2010, at 8:39 AM, pdb wrote:
Thanks, but that was what I just discovered myself the hard way.
What I really wanted to know was how to solve this issue.
Although that was _not_ what you requested in your first post.
2 options
On Sep 21, 2010, at 8:39 AM, pdb wrote:
Thanks, but that was what I just discovered myself the hard way.
What I really wanted to know was how to solve this issue.
Although that was _not_ what you requested in your first post.
2 options:
?table
?factor
iris1$Species <-factor(iris$Species
Thanks, but that was what I just discovered myself the hard way.
What I really wanted to know was how to solve this issue.
--
View this message in context:
http://r.789695.n4.nabble.com/removed-data-is-still-there-tp2548440p2548527.html
Sent from the R help mailing list archive at Nabble.com.
Removing elements from a factor does not change the levels of the
factor.
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek
team Biometrie & Kwaliteitszorg
Gaverstraat 4
9500 Geraardsbergen
Belgium
Research In
example(factor)
iris1$Species <- factor(iris1$Species, drop=T)
will get you what you need.
Nikhil Kaza
Asst. Professor,
City and Regional Planning
University of North Carolina
nikhil.l...@gmail.com
On Sep 21, 2010, at 7:41 AM, pdb wrote:
I'm confused, hope someone can point out what is no
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