Hi,
I was wondering if there is a direct approach for lining up 2-column
matrices according to the values of the first column. An example and a
brute-force approach is given below:
x - cbind(1:10, runif(10))
y - cbind(5:14, runif(10))
z - cbind((-4):5, runif(10))
xx - seq(
On Thu, 2007-02-01 at 15:05 -0500, Christos Hatzis wrote:
Hi,
I was wondering if there is a direct approach for lining up 2-column
matrices according to the values of the first column. An example and a
brute-force approach is given below:
x - cbind(1:10, runif(10))
y - cbind(5:14,
:[EMAIL PROTECTED]
Sent: Thursday, February 01, 2007 3:29 PM
To: [EMAIL PROTECTED]
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] Lining up x-y datasets based on values of x
On Thu, 2007-02-01 at 15:05 -0500, Christos Hatzis wrote:
Hi,
I was wondering if there is a direct approach for lining up 2
On Thu, 2007-02-01 at 15:45 -0500, Christos Hatzis wrote:
Thanks Marc and Phil.
My dataset actually consists of 50+ individual files, so I will have to do
this one column at a time in a loop...
I might look into SQL and outer joints as an alternative to avoid looping.
Thanks again.
: Marc Schwartz [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 01, 2007 4:21 PM
To: [EMAIL PROTECTED]
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] Lining up x-y datasets based on values of x
On Thu, 2007-02-01 at 15:45 -0500, Christos Hatzis wrote:
Thanks Marc and Phil.
My dataset
-
From: Marc Schwartz [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 01, 2007 4:21 PM
To: [EMAIL PROTECTED]
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] Lining up x-y datasets based on values of x
On Thu, 2007-02-01 at 15:45 -0500, Christos Hatzis wrote:
Thanks Marc and Phil.
My dataset
x-y datasets based on values of x
On Thu, 2007-02-01 at 15:45 -0500, Christos Hatzis wrote:
Thanks Marc and Phil.
My dataset actually consists of 50+ individual files, so I will have
to do this one column at a time in a loop...
I might look into SQL and outer joints as an alternative to avoid
The zoo package has a multiway merge with optional zero fill.
Here are two ways:
library(zoo)
merge(x = zoo(x[,2], x[,1]),
y = zoo(y[,2], y[,1]),
z = zoo(z[,2], z[,1]),
fill = 0)
# or
library(zoo)
X - list(x = x, y = y, z = z)
merge0 - function(..., fill = 0) merge(..., fill =
On Thu, 2007-02-01 at 23:34 +, Prof Brian Ripley wrote:
On Thu, 1 Feb 2007, Marc Schwartz wrote:
Christos,
Haccording to the Value section in ?merge:
A data frame. The rows are by default lexicographically sorted on the
common columns, but for sort=FALSE are in an
@stat.math.ethz.ch; [EMAIL PROTECTED]
Subject: Re: [R] Lining up x-y datasets based on values of x
On Thu, 2007-02-01 at 23:34 +, Prof Brian Ripley wrote:
On Thu, 1 Feb 2007, Marc Schwartz wrote:
Christos,
Haccording to the Value section in ?merge:
A data frame. The rows are by default
Thanks again.
-Christos
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 01, 2007 7:25 PM
To: [EMAIL PROTECTED]
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] Lining up x-y datasets based on values of x
The zoo package has a multiway merge
On Thu, 2007-02-01 at 22:46 -0500, Christos Hatzis wrote:
Marc,
I don't think the issue is duplicates in the matching columns. The data
were generated by an instrument (NMR spectrometer), processed by the
instrument's software through an FFT transform and other transformations and
finally
.
-Christos
-Original Message-
From: Marc Schwartz [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 01, 2007 11:06 PM
To: [EMAIL PROTECTED]
Cc: 'Prof Brian Ripley'; r-help@stat.math.ethz.ch
Subject: Re: [R] Lining up x-y datasets based on values of x
On Thu, 2007-02-01 at 22:46 -0500, Christos
]
Sent: Thursday, February 01, 2007 11:06 PM
To: [EMAIL PROTECTED]
Cc: 'Prof Brian Ripley'; r-help@stat.math.ethz.ch
Subject: Re: [R] Lining up x-y datasets based on values of x
On Thu, 2007-02-01 at 22:46 -0500, Christos Hatzis wrote:
Marc,
I don't think the issue is duplicates
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