2022 search results for "twitter"

Quantile regression in R

January 5, 2008
By
Quantile regression in R

Roger Koenker, a quantile regression crusader, has an R package that implements the procedure. It is called quantreg, and it is documented here. This package has apparently been around for quite some time, but I was only recently turned on to quantile ...

Read more »

A bugfix release for rjags

December 18, 2007
By
A bugfix release for rjags

Several people have written in to tell me that rjags crashes if you  re-run a modelling script in the same R session.  The crash is caused by a memory management bug in the JAGS library that is triggered when you … Continue reading →

Read more »

Rattle: an R GUI

December 16, 2007
By
Rattle: an R GUI

Rattle is a graphical interface to R. It supports basic data management tasks, as well as a number of different modeling functions. I haven’t had a chance to test it out yet since I don’t have my R installation  completely up to date, but it looks promising. For all of R’s strengths, one weakness is

Read more »

Linear panel data models in R: The PLM package

November 10, 2007
By
Linear panel data models in R: The PLM package

The plm package for R lets you run a number of common panel data models, including The fixed effects (or within) estimator The random effects GLS estimator It also allows for general GLS estimation, as well as GMM estimation, and includes a feature for heteroscedasticity consistent covariance estimation. It’s very easy to use, it simply

Read more »

Changing the fonts in R plots

October 28, 2007
By
Changing the fonts in R plots

Tweet I use R to do almost all of my statistical analysis and plotting. It has a very steep learning curve but once you get into it, it’s very powerful and you can customise almost anything. The only problem is that these changes are not...

Read more »

Quick-R: a great R tutorial site

October 23, 2007
By
Quick-R: a great R tutorial site

Quick-R, by Robert Kabacoff, is a wonderful R introduction site. It covers data management, basic and advanced statistics, and graphing in R, and it is aimed at an audience that has previous experience using other packages (such as SAS or Stata) that w...

Read more »

GillespieSSA 0.3-1 released

October 4, 2007
By
GillespieSSA 0.3-1 released

I recently rolled up the new version of the GillespieSSA package, version 0.3-1. The tar ball of the new version is posted on its web page (here). I also submitted it to CRAN so in (due time) it should appear … Continue reading →

Read more »

Special Volume of JSS on Ecology and Ecological Modelling in R

October 3, 2007
By
Special Volume of JSS on Ecology and Ecological Modelling in R

The latest issue Journal of Statistical Software is a special volume on Ecology and Ecological Modelling in R. This has been in the woodwork for quite some time now and it is nice to finally to see this out “in … Continue reading →

Read more »

GillespieSSA on CRAN

September 21, 2007
By
GillespieSSA on CRAN

So it’s official – my R package GillespieSSA has been posted to the official list of packages on CRAN (The Comprehensive R Archive Network). Check it out. Now back to my manuscript. Over the last few days I have been … Continue reading →

Read more »

GillespieSSA 0.2-0 is released

September 19, 2007
By
GillespieSSA 0.2-0 is released

Just finished the new version of the GillespieSSA package. The tar ball of the new version is posted on its web page (here). I also submitted it to CRAN so in (due time) it should appear on the official R … Continue reading →

Read more »