Full_Name: Martin Elff
Version: 1.5.0
OS: MS Windows 98
Submission from: (NULL) (134.155.91.46)
Merging of two data frames by variables with different names
(using by.x and by.y) is no
longer possible (it was possible in version 1.4.1).
Call:
mvoteint.classd.matadd <- merge(
unique(mvoteint.classd),
unique(subset(dimens.mpp,
select=c(nation,year,mecode,
econlrdiff,
eeconlrdiff,
welfdiff,
labmiddiff,
authlibdiff,
authlibdiffn)
)),
by.x=c("nation","eyear","mvoteint"),
by.y=c("nation","year","mecode"),
all.x=TRUE,
sort=TRUE
)
Error message:
Error in match.names(clabs, names(xi)) : names don't match previous names:
year, mecode
Traceback:
10: stop(paste("names don't match previous names:\n ",
paste(nmi[nii ==
0], collapse = ", ")))
9: match.names(clabs, names(xi))
8: rbind(...)
7: rbind(x[, by.x], y[, by.y])
6: do.call("paste", c(rbind(x[, by.x], y[, by.y]), sep =
"\r"))
5: merge.data.frame(unique(mvoteint.classd), unique(subset(dimens.mpp,
select = c(nation, year, mecode, econlrdiff, eeconlrdiff,
welfdiff, labmiddiff, authlibdiff, authlibdiffn))), by.x
c("nation",
"eyear", "mvoteint"), by.y = c("nation",
"year", "mecode"),
all.x = TRUE, sort = TRUE)
4: merge(unique(mvoteint.classd), unique(subset(dimens.mpp, select = c(nation,
year, mecode, econlrdiff, eeconlrdiff, welfdiff, labmiddiff,
authlibdiff, authlibdiffn))), by.x = c("nation",
"eyear",
"mvoteint"), by.y = c("nation", "year",
"mecode"), all.x = TRUE,
sort = TRUE)
3: eval.with.vis(expr, envir, enclos)
2: eval.with.vis(ei, envir)
1: source("setup-classd-mat-additiv.R", echo = T)
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On Fri, 3 May 2002 elff@rumms.uni-mannheim.de wrote:> Full_Name: Martin Elff > Version: 1.5.0 > OS: MS Windows 98 > Submission from: (NULL) (134.155.91.46) > > > Merging of two data frames by variables with different names > (using by.x and by.y) is no > longer possible (it was possible in version 1.4.1).To be precise, it doesn't seem to work with multiple by columns, so> df<-data.frame(x=1:10,y=rnorm(10)) > fd<-data.frame(z=1:10,w=rnorm(10)) > merge(df,fd,by.x="x",by.y="z")succeeds but> fd<-data.frame(z=1:10,m=letters[1:10],w=rnorm(10)) > df<-data.frame(x=1:10,y=rnorm(10),n=letters[1:10]) > merge(df,fd,by.x=c("x","n"),by.y=c("z","m"))Error in match.names(clabs, names(xi)) : names don't match previous names: z, m -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Fri, 3 May 2002, Thomas Lumley wrote:> On Fri, 3 May 2002 elff@rumms.uni-mannheim.de wrote: > > > Full_Name: Martin Elff > > Version: 1.5.0 > > OS: MS Windows 98 > > Submission from: (NULL) (134.155.91.46) > > > > > > Merging of two data frames by variables with different names > > (using by.x and by.y) is no > > longer possible (it was possible in version 1.4.1). > > To be precise, it doesn't seem to work with multiple by columns, so > > df<-data.frame(x=1:10,y=rnorm(10)) > > fd<-data.frame(z=1:10,w=rnorm(10)) > > merge(df,fd,by.x="x",by.y="z") > succeeds butYes, and there is an example on the help page for that case.> > fd<-data.frame(z=1:10,m=letters[1:10],w=rnorm(10)) > > df<-data.frame(x=1:10,y=rnorm(10),n=letters[1:10]) > > merge(df,fd,by.x=c("x","n"),by.y=c("z","m")) > Error in match.names(clabs, names(xi)) : names don't match previous names: > z, mYes, the code is different for multiple match columns, and I know how to fix it. Thank you Thomas for the example: creating one was my next task. -- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._