@stat.math.ethz.ch
Subject: Re: [R] subset using noncontiguous variables by name (not
index)
Try this:
%:% - function(x, y) {
+prex - gsub([0-9], , x); postx - gsub([^0-9], , x)
+prey - gsub([0-9], , y); posty - gsub([^0-9], , y)
+stopifnot(prex == prey)
+paste(prex, seq(from
On Mon, 27 Aug 2007, Muenchen, Robert A (Bob) wrote:
Gabor, That works great!
I think this would be a very helpful addition to the main R
distribution. Perhaps with a single colon representing numerical order
(exactly as you have written it) and two colons representing the order
of the
Thanks for helping me see why R doesn't have the obvious! -Bob
-Original Message-
From: Thomas Lumley [mailto:[EMAIL PROTECTED]
Sent: Monday, August 27, 2007 2:12 PM
To: Muenchen, Robert A (Bob)
Subject: RE: [R] subset using noncontiguous variables by name (not
index)
On Mon, 27
Hi All,
I'm using the subset function to select a list of variables, some of
which are contiguous in the data frame, and others of which are not. It
works fine when I use the form:
subset(mydata,select=c(x1,x3:x5,x7) )
In reality, my list is far more complex. So I would like to store it in
a
Using builtin data frame anscombe try this. First we set up a data frame
anscombe.seq which has one row containing 1, 2, 3, ... . Then select
out from that data frame and unlist it to get the desired index vector.
anscombe.seq - replace(anscombe[1,], TRUE, seq_along(anscombe))
idx -
[Muenchen, Robert A (Bob)]
I'm using the subset function to select a list of variables, some of
which are contiguous in the data frame, and others of which are not. It
works fine when I use the form:
subset(mydata,select=c(x1,x3:x5,x7))
In reality, my list is far more complex. So I would like
To: Muenchen, Robert A (Bob)
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] subset using noncontiguous variables by name
(not index)
Using builtin data frame anscombe try this. First we set up a
data frame
anscombe.seq which has one row containing 1, 2, 3, ... . Then select
out from
A (Bob)
Cc: r-help@stat.math.ethz.ch
Subject: RE: [R] subset using noncontiguous variables by name (not
index)
The problem is that x3:x5 does not mean what you think it means. The
only
reason it does the right thing in subset() is because a clever trick
is
used
there (read the code -- it's
, August 26, 2007 6:50 PM
To: 'Gabor Grothendieck'; Muenchen, Robert A (Bob)
Cc: r-help@stat.math.ethz.ch
Subject: RE: [R] subset using noncontiguous variables by name (not
index)
The problem is that x3:x5 does not mean what you think it means. The
only
reason it does the right thing
