Author Archive for ‘Mark Heckmann’
Useful R snippets
In this post we collect several R one- or few-liners that we consider useful. As our minds tend to forget these little fragments we jot them down here so we will find them again.
Filed under: R / R-Code | 5 Comments
Guest post by Daniel Adler. Below is a real-time audio-visual multimedia demonstration – or in short ‘an intro’ – written in 100% pure R. It requires no compilation and runs across major platforms via the package rdyncall and preinstalled precompiled standard libraries such as OpenGL and SDL libraries. This ‘happy-birthday’ production runs about 3 minutes [...]
Filed under: R / R-Code | 3 Comments
Tags: R, intro
The first week of April I attended an excellent workshop on biplots held by Michael Greenacre and Oleg Nenadić at the Gesis Institute in Cologne, Germany. Throughout his presentations, Michael used animations to visualize the concepts he was explaining. He also included animations in some of his papers. This inspired me to do this post [...]
Filed under: R / R-Code | 5 Comments
Yesterday I surfed the web looking for 3D wireframe examples to explain linear models in class. I stumbled across this site where animated 3D wireframe plots are outputted by SAS. Below I did something similar in R. This post shows the few steps of how to create an animated .gif file using R and ImageMagick. [...]
Filed under: R / R-Code | 15 Comments
Lately, David Smith from REvolution Computing set out to challenge the R community with the reprocuction of a beautiful choropleth map (= multiple regions map/thematic map) on US unemployment rates he had seen on the Flowing Data blog. Here you can find the impressing results. Being a fan of beautiful visualizations I tried to produce [...]
Filed under: R / R-Code | 24 Comments
Tags: maps, R, visualization
Most people using LaTex feel that creating tables is no fun. Some days ago I stumbled across a neat function written by Paul Johnson that produces LaTex code as well as LaTex code that can be used within Lyx. The output can be used for regression models and looks like output from the Stata outreg [...]
Filed under: R / R-Code | 12 Comments
Tags: regression, Lyx, sweave, LaTex, tables
Just a little note for german speaking R beginners: There is an introductory course in R (german) available online on the website of the department of methodology and evaluation research at the University of Jena. Dr. Ivailo Partchev holds a seven sessions course on that topic (duration 11.5 hours).
Filed under: News | 1 Comment
Before you read this post, please have a look at Enrique’s comment below. He pointed out that the built-in R function modifyList() already does what I wanted to describe in this post. Well, I live to learn :) I was wondering how I could write a function that uses default settings but accepts a list [...]
Filed under: R / R-Code | 4 Comments
Tags: building functions, dot-dot-dot
On the REvolutions Blog there is a nice posting treating the often raised concern on “How good or reliable R is”. At my university R is hardly used. Sometimes I was asked by lecturers wether the calculations done by R and its packages are accurate. The linked posting treats this matter and tries to clarify [...]
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Mark Heckmann’s blog- Psychologie und LaTex – Literaturverzeichnisse im DGPs-Stil February 29, 2012 markheckmann
- Zotero to LaTex Workflow December 1, 2011 markheckmann
- Einführung in die quantitative Datenanalyse mit R October 1, 2011 markheckmann
- Das (Neo)-Sokratische Gespräch January 10, 2011 markheckmann
- Einführung in das R-Framework zur quantitativen Datenanalyse für Bachelor and Master Studenten October 25, 2010 markheckmann
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