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,
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
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
I'm confused, hope someone can point out what is not obvious to me.
I thought I was creating a new data frame by 'deleting' rows from an
existing dataframe - I've tried 2 methods.
But this new data frame seems to remember values from its parent - even
though there are no occurences.
Where
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
-Oorspronkelijk bericht-
Van: r-help-boun...@r-project.org
[mailto:r-help-boun...@r-project.org] Namens pdb
Verzonden: dinsdag 21 september 2010 13:42
Aan: r-help@r-project.org
Onderwerp: [R] removed data is still there!
I'm confused, hope someone can point out what is not obvious to me
Thanks, but that was what I just discovered myself the hard way.
What I really wanted to know was how to solve this issue.
--
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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$Species
On Sep 21, 2010, at 9:04 AM, David Winsemius wrote:
On Sep 21, 2010, at 8:39 AM, pdb wrote:
Thanks, but that was what I just discovered myself the hard way.
What I really wanted to know was how to solve this issue.
Although that was _not_ what you requested in your first post.
2
Hi,
I knew about that way already, with factor(). Isn't there another
possibility, directly at the subsetting step? That would be of great help
iris1 - iris[iris$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
Ivan Calandra ivan.calandra at 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$Species == 'setosa',] ## I mean here
Ivan
Not as far as I know.
7:23 AM
To: r-help@r-project.org
Subject: Re: [R] removed data is still there!
Hi,
I knew about that way already, with factor(). Isn't there another
possibility, directly at the subsetting step? That would be of great
help
iris1 - iris[iris$Species == 'setosa',] ## I mean here
Ivan
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