[TxMt] Count number of citations in LaTeX file

[Ross Ahmed]

Hi all

I want to count the number of citations contained within a .Rnw file and
show the result as a tool tip.

My .Rnw file looks like this:

\section{Methods}

<<plot_mtcars>>=
plot(mtcars)
@

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat \citet{Author2014, AuthorEtAl2014}. \citet{AuthorAuthor2013} duis
aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt
in culpa qui officia deserunt mollit anim id est laborum.

\section{Results}

<<plot_iris>>=
plot(iris)
@

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. \citet*{Author1998} ut
enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut
aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in
voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint
occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit
anim id est laborum \citep*{Somebody2014}.


Note that citation keys will be in one of these 3 formats: Author2014,
AuthorAuthor2014 or AuthorEtAl2014.

I would like to count the total number of citations within the .Rnw file and
the number in each section. In above example there are 3 citations in the
Methods section and 2 citations in the Results section.

Is this possible?

Thanks
Ross




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