[R] subsetting problem with multiple criteria: Works in some but not all cases.

[John Kane]

Excellent, thank you .
--- jim holtman <jholtman at gmail.com> wrote:

> You can use apropos to find then and then list out
> their help pages:
> 
> > apropos("%")
> [1] "%%"   "%*%"  "%/%"  "%in%" "%o%"  "%x%"
> 
> 
> On 11/2/07, John Kane <jrkrideau at yahoo.ca> wrote:
> > Thank you Jim.  That seems to work perfectly.
> >
> > I had looked at %in% and apparently misunderstood
> what
> > it would do.  Is there any place where I can read
> on
> > the various %XX% functions?
> >
> > --- jim holtman <jholtman at gmail.com> wrote:
> >
> > > I think the problem is with your use of "=="
> instead
> > > of "%in%"; try
> > >
> > > matching <- subset(mydata[,c(j+1,j+7)],
> mydata[,j+1]
> > > %in% lone.word)
> > >
> > >
> > >
> > > On 11/1/07, John Kane <jrkrideau at yahoo.ca>
> wrote:
> > > > I am trying to compare some word lists which
> have
> > > an
> > > > associate set of numbers. I want to compare
> word
> > > list
> > > > aa with bb and find only those words which are
> > > > unique to bb, then compare bb with cc, etc.
> > > >
> > > > I thought that I should be able to do this by
> > > using
> > > > setdiff to get the unique words and then
> subset
> > > the
> > > > data frame to get the unique names and
> > > corresponding
> > > > numbers but I am misunderstanding something.
> > > >
> > > > When I run the code below a) I get lots of
> warning
> > > and
> > > > b) I get the correct results for 4 of the 5
> > > > comparisons. However the comparison of  three
> with
> > > > four (cc,dd) gives me an empty subset.
> > > >
> > > > Can anyone point out my error or suggest a
> better
> > > way
> > > > to do this?
> > > > Thanks
> > > >
> > > >
> > >
> >
>
============================================================================
> > > >
> > > > mydata  = data.frame(aa = Cs(cat, dog, horse,
> > > cow),
> > > > bb = c("mouse", "dog", "cow", "pigeon"),
> > > > cc  =c("emu", "rat", "crow", "cow"),
> > > > dd = c("cow", "camel", "manatee", "parrot") ,
> > > > ee = c( "coat", "hat", "dog", "camel") ,
> > > > ff = c("knife","dog", "cow", "pigeon"),
> > > > ann = c(1,2,3,4),
> > > > bnn = c(5,6,7,8),
> > > > cnn = c(9,10,11,12),
> > > > dnn = c(13,14,15,16),
> > > > enn = c(17,18,19,20),
> > > > fnn = c(21,22,23,24))
> > > >
> > > > wordnames <- c("word", "number")
> > > > word.list  <- rep(vector("list", 1), 5)
> > > >
> > > > for(j in 1:5) {
> > > > lone.word <- setdiff(mydata[,j+1],mydata[,j]);
> > > > lone.word
> > > > matching <- subset(mydata[,c(j+1,j+7)],
> > > > mydata[,j+1]==lone.word); matching
> > > > word.list[[j]] <- matching;
> > > names(word.list[[j]])<-
> > > > wordnames
> > > > }
> > > > word.list
> > > >
> > > >
> > >
> >
>
=============================================================================
> > > > R version 2.6.0 (2007-10-03)
> > > > i386-pc-mingw32
> > > >
> > > > locale:
> > > >
> > >
> >
>
LC_COLLATE=English_Canada.1252;LC_CTYPE=English_Canada.1252;LC_MONETARY=English_Canada.1252;LC_NUMERIC=C;LC_TIME=English_Canada.1252
> > > >
> > > > attached base packages:
> > > > [1] stats     graphics  grDevices utils
> > > datasets
> > > > methods   base
> > > >
> > > > other attached packages:
> > > > [1] Hmisc_3.4-2 gdata_2.3.1
> > > >
> > > > loaded via a namespace (and not attached):
> > > > [1] cluster_1.11.9 grid_2.6.0     gtools_2.4.0
> > > > lattice_0.17-1
> > > >
> > > >
> > > > R version 2.6.0 (2007-10-03)
> > > > i386-pc-mingw32
> > > >
> > > > locale:
> > > >
> > >
> >
>
LC_COLLATE=English_Canada.1252;LC_CTYPE=English_Canada.1252;LC_MONETARY=English_Canada.1252;LC_NUMERIC=C;LC_TIME=English_Canada.1252
> > > >
> > > > attached base packages:
> > > > [1] stats     graphics  grDevices utils
> > > datasets
> > > > methods   base
> > > >
> > > > other attached packages:
> > > > [1] Hmisc_3.4-2 gdata_2.3.1
> > > >
> > > > loaded via a namespace (and not attached):
> > > > [1] cluster_1.11.9 grid_2.6.0     gtools_2.4.0
> > > > lattice_0.17-1
> > > >
> > > > ______________________________________________
> > > > R-help at r-project.org mailing list
> > > > https://stat.ethz.ch/mailman/listinfo/r-help
> > > > PLEASE do read the posting guide
> > > http://www.R-project.org/posting-guide.html
> > > > and provide commented, minimal,
> self-contained,
> > > reproducible code.
> > > >
> > >
> > >
> > > --
> > > Jim Holtman
> > > Cincinnati, OH
> > > +1 513 646 9390
> > >
> > > What is the problem you are trying to solve?
> > >
> >
> >
> >
> >      Ask a question on any topic and get answers


> >
> 
> 
> -- 
> Jim Holtman
> Cincinnati, OH
> +1 513 646 9390
> 
> What is the problem you are trying to solve?
>