Blog Archives

S3 vs S4, efficiency issues

May 23, 2008
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S3 vs S4, efficiency issues

While developing some new simulation code with S4 system I stumbled upon some big difficulties in terms of computational efficiency. That lead me to diging into archives of Rhelp and Rdevel looking for clues. I found some interesting threads that address almost exactly the same problems that I do. Read for yourself here and here,

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Writing Rd files in Vim

March 3, 2008
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Writing Rd files in Vim

I have made a small “translation” of a portion of “Writing R Extensions” manual about the Rd files to a vimhelp format. You can find it on vim.org, under this link http://www.vim.org/scripts/script.php?script_id=2177. If that does not work just search for a script “rd” there. The script itself is called “rdhelp.txt”.

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ERGMs in R

January 23, 2008
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ERGMs in R

Developers of statnet, a collection of packages for R for fitting Exponential Random Graph Models (ERGM), issued a major update. First change is that the main package is now called ergm. Secondly, a set of additional packages has been made available. Apart from package network, that provides a class system for relational data on which

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Resources for S4 classes and methods

January 23, 2008
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Resources for S4 classes and methods

Learning the programming in the new S4 system of classes and methods in R can be quite cumbersome, even though the methods package is very well documented. That is why I collected some of the info and materials that I am aware of on a separate page here. I warmly welcome any suggestions for extending

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