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With following the value of variable can be printed to pdf, so it should be somehow possible to write this value to txt file.
\documentclass{article}
% \usepackage[verbose]{geometry}
\begin{document}
% \SweaveOpts{concordance=TRUE}
\newlength{\mylength}
\settowidth{\mylength}{some text}
\the ...

For my purpose sinking variables with their values into file would suffice. Anything else I can do with R project. It would serve many purposes I can't possibly list them all.

For example I can dynamically set tabular data in pretty table using \longtable. Some things still bothers me. I have ...

Nice, that's what I hopped for. Thank you very much.

Say I have many thousands of such strings which I need to measure. I can generate code in R project into txt file like following:

\settowidth{\stringlngth1}{string1}
\settowidth{\stringlngth2}{string2}
\settowidth{\stringlngthn}{stringn}

Can ...

Hello, is it possible to make pdf which has interactive table with sorting options like in excel? I mean data/filter which can sort rows upon clicking on column header.

Hello, I would like to get properties of typeset object. For example width and height of particular formatted text string. I would like to assign height of this string to variable and than use and manipulate with this variable in subsequent typesetting.

Say I have string "my string". I than assign ...