Hi everyone,
I am trying to run Sweave.bat (batchfiles_0.6-1) from the command line
on Windows, but I get this error:
C:\batchfiles_0.6-1>Sweave.bat Sweave-test-1
"Error: rterm.exe not found"
I don't know how to set up the path if this one were the problem... I
ran rcmd.bat and I got this...
Thanks Dennis, looks like there's even less boiler plate code with plyr. By
the way, what I labelled "W.SE" is meant to represent the weighted standard
error of the mean. Your "WSE" calculations appear to be providing the weighted
standard deviation of the variable. Is this a matter of needin
It is currently not possible to pass weights in summaryBy.
Regards
Søren
Fra: Joshua Wiley [jwiley.ps...@gmail.com]
Sendt: 17. januar 2011 08:16
Til: Solomon Messing
Cc: r-help@r-project.org; Søren Højsgaard
Emne: Re: [R] Using summaryBy with weighted
Hi:
Does this do what you need?
wstats <- function(d) {
require(Hmisc)
N <- length(d$response[!is.na(d$response)])
c(WM = wtd.mean(d$response, d$weights),
WSE = sqrt(wtd.var(d$response, d$weights)),
N = N)
}
library(plyr)
dd
Thanks Josh. I built on your example and ended up with the code below--if you
or anyone sees any issues please let me know. It would be great if there were
a slicker way to get these kinds of summary stats in R, but this gets the job
done.
# takes data frame z with weights w and data x, retur
You might use the plyr package to get group-wise weighted means
library(plyr)
ddply(mydata,~group,summarise, b=mean(weights),
c=weighted.mean(response,weights))
hth
david freedman
--
View this message in context:
http://r.789695.n4.nabble.com/Using-summaryBy-with-weighted-data-tp3220761p32212
Dear Solomon,
On Sun, Jan 16, 2011 at 10:27 PM, Solomon Messing
wrote:
> Dear Soren and R users:
>
> I am trying to use the summaryBy function with weights. Is this possible?
> An example that illustrates what I am trying to do follows:
>
> library(doBy)
> ## make up some data
> response = rno
7 matches
Mail list logo
