Publications by micha
Assignment One
##### loading the data set in R source("http://www.openintro.org/stat/data/cdc.R") library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.4 ✔ readr 2.1.5 ## ✔ forcats 1.0.0 ✔ stringr 1.5.1 ## ✔ g...
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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 this, for now short, collection! Where to look...
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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 statnet rel...
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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”. Related To ...
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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, including the fo...
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One R tip a day
I just encountered this website http://onertipaday.blogspot.com/: One R tip per day. Very nice collection of R tips. Related To leave a comment for the author, please follow the link and comment on their blog: Brokering the Closure » R. R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topi...
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maps of Poland in R
Bogdan Taranta (website in Polish) is developing a set of functions for drawing administrative maps of Poland. I wrote similar functionality for myself already some time ago, but only for voivodships, i.e. top-level administrative units, and also in a rather low resolution. Bogdan’s contribution seems to contain all levels, at high resolution, ...
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UseR!2008 aftermath
Earlier in August I was on the R user conference which this year took place in Dortmund. It was a quite an exciting event gathering around 500 people from around the globe and featuring 170 presentations and talks. Topics varied from new developments in the R system, newly implemented statistical methods as well as plethora of very interesting, a...
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rgraph6 on R-Forge
I have moved my rgraph6 R package to R-Forge. R-Forge is a website that facilitates development of R packages by providing services for version control (through Subversion), automatic checking and building of the packages including binaries for Windows and MacOS, as well as for collaboration with other R users/developers. The rgraph6 package has ...
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R’s working directory
Do you usually start R with a desktop icon or some other shortcut? Are you tired of using setwd and getwd each time after you start R to get the working directory correctly? If so, then your days of suffering might be just coming to an end. Having the working directory set correctly is very convenient. You can both read and write files to the pr...
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