Help with tm assocation analysis and Rgraphviz installation.
THANK YOU IN ADVANCE
Question 1:
I saved two txt file in C:\textfile
And each txt file contents only one text column, and both have 100 records.
I know term research occurs 49 times, so I want to find out which other
words are correlated to this word, and I got tons of association 1 .
I tried other terms, and no association value is less than 1, which
obviously is wrong.
Could any export tell me where did I do wrong?
My R-code is:
R>my.path<-'C:\\textfile'
R>library(tm)
R>my.corpus <- Corpus(DirSource(my.path), readerControl = list
(reader=readPlain))
R>tdmO <- TermDocMatrix(my.corpus)
R>tdmO
An object of class TermDocMatrix
Slot "Data":
2 x 1426 sparse Matrix of class "dgCMatrix"
[[ suppressing 1426 column names 000, 0092, 0093 ... ]]
1 3 1 12 1 1 1 8 1 1 2 1 9 . 2 2 1 518 1 1 1 2 1 1 2 6 1 1 3 3 2 1 1 4 1 4 3
3 1 11 5 1 7 2 5 4 3 1 1
2 . . . . . . . . . . . . 3 . . . 6 . . . . . . . . . . . . . . . 3 . . .
. . 1 . 1 . . . . . . .
1 1 2 1 4 1 5 4 4 2 4 6 2 2 . 3 1 2 1 3 1 2 1 4 1 1 3 1 1 1 12 2 1 1 2 1 1 4
1 1 . 3 1 2 1 3 3 1 1 2 2
2 . . . . . . . 3 . . 3 . . 1 . . . . . . . . . . . . . . . . . . . . . . .
. . 1 . . 1 . . 2 . . . .
R>findAssocs(tdmO,research,0.95)
academ access accompani
accord
ace
1 1 1
1
1
achiev acquir acquisit
act
activ
1 1 1
1
1
activi adapt add
addit
adequ
1 1 1
1
1
Question2:
I cant load Rgraphviz in R.
I am using windows XP professional, R 2.8.1
I followed the instruction in this link
http://groups.google.com/group/r-help-archive/browse_thread/thread/413605edc81b3422/b7917083646d9cd2?lnk=gst&q=Rgraphviz#b7917083646d9cd2
and
https://stat.ethz.ch/pipermail/bioconductor/2008-June/022838.html
What I did is
1. Close down any R sessions you have open.
2. Download and install Microsoft Visual C++ 2005 SP1 Redistributable
Package:
http://www.microsoft.com/downloads/details.aspx?familyid=200B2FD9-AE1A-4A14-984D-389C36F85647&displaylang=en
2. Download and install the Graphviz 2.16.1 from the archives:
I also tried 2.18.1, and 2.22.2
3. Check your PATH to see how Graphviz was added: graphvis 2.18 and later
versions will automatically add
C:\Program Files\Graphviz2.16\Bin
to Path.
4. open R and download and install Rgraphviz using:
R> source("http://bioconductor.org/biocLite.R";
<http://bioconductor.org/biocLite.R%22>)
R> biocLite("Rgraphviz")
I got no error before the next step:
R>library(Rgraphviz)
I got this error message:
Error in inDL(x, as.logical(local), as.logical(now), ...) :
unable to load shared library
'C:/PROGRA~1/R/R-28~1.1/library/Rgraphviz/libs/Rgraphviz.dll':
LoadLibrary failure: The specified module could not be found.
Error : .onLoad failed in 'loadNamespace' for 'Rgraphviz'
Error: package/namespace load failed for 'Rgraphviz'
What else shall I do?
Thank you in advance!
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