Monday, August 29, 2011

Linux partition guid

Here is a short but useful guide showing how to partition a hard drive for a new Linux installation.

Configuring AUCTeX

This post explains how to configure AUCTeX to use different PDF file viewers.

Sunday, August 28, 2011

Ra vs. compiler package

R seems to have two byte code compilers: the Ra add-on module (and the accompanying "jit" package) and the "compiler" package came with the default installation. I wonder how they differentiate from each other and what the strengths and weaknesses of each are.


A simple way to get CppBugs to work is to copy the "cppbugs" folder to "/usr/local/include". On my Ubuntu 10.04 system, I also need to modify the make file located in the test file directory and replace the "ARMADILLO_LIBS = llapack" with "ARMADILLO_LIBS = -larmadillo".

As a BUGS/JAGS user, I think this project is very promising and extremely interesting. It will be even more attractive if CppBugs can be integrated with R (maybe through Rcpp) in the similar way that R2WinBUGS integrates WinBUGS with R.

Saturday, August 27, 2011

Using Rcpp for faster MCMC simulation

Here is a very informative blog post showing how to use Rcpp to speed up MCMC simulation.

Thursday, August 25, 2011

OpenGeoDa, again

Another new release of OpenGeoDa is out, but the same problems persists: while the Linux version opened .shp files with Chinese names without problems, the windows version crashed.

Now the new version also works on Ubuntu 11.04 64-bit.

Wednesday, August 24, 2011

The "rube" package

The "rube" package is very promising. It builds upon the "R2WinBUGS" package and adds some very useful features. I hope it further extends to the JAGS engine because JAGS is apparently the future of the BUGS famine.

R for programmer

This is a useful document.

Friday, August 19, 2011

WebOS is gone

So that's it, HP has decided to ditch its short-lived tablet, smartphone etc.

Ibus mode

Ibus mode for Emacs allows the use of Ibus input method in Emacs. Very convenient.

Tuesday, August 16, 2011

Tango color theme for Emacs

I like the Tango color theme for Emacs

Saturday, August 06, 2011

Get predicted values from GAM models

I used to rely on the default plot produced  by the GAM command; now I realized that it is quite simple to produce and plot predicted predicted values using the "predict.gam()" function in the "mcgv" package.

Thursday, August 04, 2011

Interaction effect plot

I am glad to find out that the "effects" package can now handle mixed effect model results from "lme4".