Blog Archives

ShareLaTeX now supports knitr

January 31, 2014
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ShareLaTeX (click here to register a free account) is a wonderful and reliable on-line editor for writing and compiling LaTeX documents “in the cloud” as well as working together in real-time (imagine Google Docs supporting LaTeX => you get ShareLaTeX).…Read more ›

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FuzzyNumbers_0.3-3 released

January 3, 2014
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A new release of the FuzzyNumbers package for R is now available on CRAN. The package provides S4 classes and methods to deal with Fuzzy Numbers that allow for computations of arithmetic operations, approximation by trapezoidal and piecewise linear FNs,…Read more ›

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FuzzyNumbers-0.3-1 released

June 23, 2013
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A new version of the FuzzyNumbers package for R has just been submitted to the CRAN archive. Check out our step-by-step tutorial. ** FuzzyNumbers Package CHANGELOG ** ********************************************************************* 0.3-1 /2013-06-23/ * piecewiseLinearApproximation() - general case (any knot.n) for method="NearestEuclidean" now…Read more ›

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Package-defined S4 generic covered by a base S3 generic in R packages

May 22, 2013
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While developing our agop package I encountered some problems with calling S4 generic functions defined in the Matrix package, that were created from “base” S3 generics. I don’t know whether it’s an R bug (tested in R 2.15 and R…Read more ›

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Documentation of R source code for package developers

April 26, 2013
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R package developers who use the native API written in C will surely be interested in the Roxygen-generated Documentation of R source code. The documentation is based on the SVN R-devel branch and will be updated on a monthly basis…Read more ›

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knitr documents with tikzDevice graphics

April 13, 2013
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Setting up tikzDevice output in knitr may be a frustrating task, but gives outstandingly aesthetic, LaTeX-like figures. Here are my global knitr settings for typesetting documents in Polish (in UTF-8, make sure your R also runs in a Unicode locale…Read more ›

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Configure Kile for knitr under GNU/Linux

April 13, 2013
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Kile – a convenient LaTeX editor – may also be used to prepare knitr-generated reports. Here is how we may make our work much more efficient with a convenient compile-on-keypress feature. Create a bash script in your home directory, named…Read more ›

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Properly “internationalized” regular expressions in R

April 5, 2013
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We should pay special attention to writing a truly portable code that works in the same fashion under different locales and character encodings. Currently, R has two Regex engines, ERE (via TRE) and PRE (via PCRE). What is surprising, they…Read more ›

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