Monthly Archives: May 2013

A guide to speeding up R code

May 10, 2013
By

Noam Ross recently shared a very useful guide to speeding up your R code. Get a bigger computer (for example, renting an instance on the Amazon cloud for a few cents an hour) Use parallel programming techniques Using the R byte-compiler Profiling and benchmarking your code Using high-performance packages (like xts, for time series) And lastly, rewriting your code...

Read more »

Tutorials on git/github and GNU make

May 10, 2013
By
Tutorials on git/github and GNU make

If you’re not using version control, you should be. Learn git. If you’re not on github, you should be. That’s real open source. To help some colleagues get started with git and github, I wrote a minimal tutorial. There are lots of git and github resources available, but I thought I’d give just the bare

Read more »

Using Interactive D3.js charts from within Tiki with rNVD3

May 10, 2013
By
Using Interactive D3.js charts from within Tiki with rNVD3

I've recently managed to reproduce my first charts using the nice package rNVD3 from Ramnath Vaidyanathan: https://github.com/ramnathv/rNVD3 This rNVD3 package uses NVD3, which provides re-usable charts with d3.js, without taking away the power that...

Read more »

Using Interactive D3.js charts from within Tiki with rNVD3

May 10, 2013
By
Using Interactive D3.js charts from within Tiki with rNVD3

I've recently managed to reproduce my first charts using the nice package rNVD3 from Ramnath Vaidyanathan: https://github.com/ramnathv/rNVD3 This rNVD3 package uses NVD3, which provides re-usable charts with d3.js, without taking away the power that...

Read more »

Bubble sort implemented in pure R

May 10, 2013
By
Bubble sort implemented in pure R

Please note that this is programming I purely did for the learning experience. The pure R bubble sort implemented in this post is veeeeery slow for two reasons: Interpreted code with lots of iteration is very slow. Bubble sort is… See more ›

Read more »

Package intergraph goes 2.0

May 9, 2013
By

Yesterday I submitted a new version (marked 2.0-0) of package ‘intergraph’ to CRAN. There are some major changes and bug fixes. Here is a summary: The package supports “igraph” objects created with ‘igraph’ version 0.6-0 and newer (vertex indexing starting from 1, not 0) only! Main functions for converting network data between object classes “igraph”

Read more »

Medicare Provider Charge Data – How Are Things in Spokane?

May 9, 2013
By
Medicare Provider Charge Data – How Are Things in Spokane?

Disclosure: I am not a health care professional, but just some one interested in playing with data and ways to represent them. I am not going to interpret findings here, but will make a remark or two about how to interpret them from the few graphs...

Read more »

What’s Next

May 9, 2013
By

The last two weeks have been full of changes for me. For those who’ve been asking about what’s next, I thought I’d write up a quick summary of all the news. (1) I successfully defended my thesis this past Monday. Completing a Ph.D. has been a massive undertaking for the past five years, and it’s

Read more »

How R Grows – not so fast

May 9, 2013
By
How R Grows – not so fast

I have had some work on CRAN stats on the back-burner but the recent article How R Grows tempted me to push it up the list In the interim, I have a couple of comments on Joseph Rickert`s article. Although the body of the article refers to packages either created or updated in a time

Read more »

R is His Friend

May 9, 2013
By

Marcus Beck has a nice (& relatively new) blog called R is My Friend. You can guess that his posts relate to the use of R.I particularly liked his piece on the use of the XML package in R to mine data from the internet; and his post on using the integrate...

Read more »