Displaying 2 results from an estimated 2 matches for "mback".
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2005 Jan 27
4
self-written function
Dear all,
I?ve got a simple self-written function to calculate the mean + s.e.
from arcsine-transformed data:
backsin<-function(x,y,...){
backtransf<-list()
backtransf$back<-((sin(x[x!="NA"]))^2)*100
backtransf$mback<-tapply(backtransf$back,y[x!="NA"],mean)
backtransf$sdback<-tapply(backtransf$back,y[x!="NA"],stdev)/sqrt(length(y[x!="NA"]))
backtransf
}
I would like to apply this function to whole datasets, such as
tapply(variable,list(A,B,C,D),backsin)
Of course, this d...
2002 May 04
2
R crashes trying to read a data.frame
Dear all,
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 1
minor 5.0
year 2002
month 04
day 29
language R
OS: Win98
I have a strange problem with a particular data.frame built with