Monthly Archives: May 2009

Analytic Infrastructure – Three Trends

May 11, 2009
By
Analytic Infrastructure – Three Trends

This is a post about systems, applications, services and architectures for building and deploying analytics. Sometimes this is called analytic infrastructure. In this post, we look at several trends impacting analytic infrastructure. Trend 1. Open source analytics has reached Main Street. R, which was first released in 1996, is now

Read more »

Analytic Infrastructure – Three Trends

May 11, 2009
By
Analytic Infrastructure – Three Trends

This is a post about systems, applications, services and architectures for building and deploying analytics. Sometimes this is called analytic infrastructure. In this post, we look at several trends impacting analytic infrastructure. Trend 1. Open source analytics has reached Main Street. R, which was first released in 1996, is now

Read more »

vim plugin for R

May 11, 2009
By
vim plugin for R

For the vim/R-addicted a must to have: http://www.vim.org/scripts/script.php?script_id=2628

Read more »

Searching through mailing list archives

May 8, 2009
By
Searching through mailing list archives

Romain Francois on his blog posted a very useful function to search through the R mailing list archives. Take a look at it here. Take also a look at the tm package introduced in  R News, 8(2):19–22, Oct. 2008 with an example dealing with analysi...

Read more »

Region Of Interest analysis of BOLD data

Region Of Interest analysis of BOLD data

For my research I do Region-Of-Interest (ROI) analyses of BOLD fMRI data. That is, we look at how brain activity develops in certain predefined brain regions during an experiment. On this site I describe a script that automates these analyses, using SP...

Read more »

Resources for Learning R in Iraq?

May 6, 2009
By
Resources for Learning R in Iraq?

Please comment on this if you know of Arabic and Kurdish language resources for learning R. I have been encouraging the economics faculty here to learn R for econometrics, both on grounds of quality and cost. Here is a short list of resources that can help new users make the transition from SPSS if they

Read more »

SNA with R: Loading large networks using the igraph library

May 6, 2009
By
SNA with R: Loading large networks using the igraph library

We are interested in Social Network Analysis using the statistical analysis and computing platform R. The documentation for R is voluminous but typically not very good, so this entry is part of a series where we document what we learn as we explore the tool and the packages. In our previous post on SNA we gave up...

Read more »

R Reference Card (PDF)

May 5, 2009
By

Last week I posted a short tutorial on how to merge datasets using R. R is a free and open-source statistical computing software and programming language (get R here). The only downside is a steeper learning curve because the documentation is sparse and often difficult to understand at first. Once you start using it, you'll realize...

Read more »

05.05.09: 6 Steps to call a C function in R

May 5, 2009
By

TasksWrap for netMotifsSubmit Abstract for PhD RetreatRead Architecture paperÖzgür's WST data and Uli's RTCA dataAfter some searching and testing, I have began to know how to call a C function in R. The reason for doing this can be speed (for example, the convolution of two finite sequences, as raised by the Writing R Extensions tutorial, refered as...

Read more »

R/Finance 2009 Presentations Online

May 4, 2009
By
R/Finance 2009 Presentations Online

Posted to the R-SIG-Finance mailing list today:For those who missed it, the slides for the R/Finance 2009 tutorialsand presentations are now available on RinFinance.comhttp://www.RinFinance.com/presentationsWe want to thank everyone who traveled to Chi...

Read more »