[R] sorting matrix output alphabetically

[Greg Snow]

Prof Ripley referred you to the help pages for sort and order for the sorting part of your question.  For viewing large data objects look at View (note capitol V), head, tail, page, and write.csv/write.table.

Hope this helps,

--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Bob Green
> Sent: Saturday, October 18, 2008 3:59 AM
> To: r-help at r-project.org
> Subject: [R] sorting matrix output alphabetically
>
>
> Hello,
>
> I have been using the TM package to create a TermDocMatrix, which I
> have saved as a matrix so that I can view word frequencies.  Below is
> a section of the code that I have used and an excerpt of the output:
> What I wanted to be able to do is to view the output alphabetically -
> rather than the results being sorted by frequency as below, that an
> alphabetical list would be generated. This would be quite long as the
> matrix is 176 x 2796, so I was hoping I could save the output in a
> csv file, which could be manipulated either in R or EXCEL.
>
> Any advice as to how I could do this is appreciated,
>
> Bob
>
> rec.matrix <- TermDocMatrix(recdata)
> recdata.matrix <- findFreqTerms(rec.matrix, 5, Inf)
>
> # creates a matrix
> new.matrix <- as(Data(rec.matrix), "matrix")
> tot <- colSums(new.matrix)
> sort(tot)
>
>
>                 unavail            unwilling               wheels
>                     1                    1                    1
>                 evans          interviewed                 jill
>                     1                    1                    1
>              referral             achieved                 aids
>
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