1195 search results for "tutorial"

Is your phylogeny informative?

January 19, 2012
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Is your phylogeny informative?

Yesterday my paper   appeared in early view in Evolution (author’s preprint),1 so I’d like to take this chance to share the back-story and highlight my own view on some of our findings, and the associated package on CRAN.2 I didn’t set out to write this paper.  I set out to write a very different

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Running R2WinBUGS on a Mac Running OSX

January 18, 2012
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I have long used JAGS to do all of my Bayesian work on my mac. Early on, I tried to figure out how to install WinBUGS and OpenBUGS and their accompanying R libraries on my mac, but, to no avail. I just had too hard of a time getting them running and gave up. But,

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Quick Introduction to ggplot2

January 17, 2012
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Quick Introduction to ggplot2

For a much better looking version of this post (where code is actually readable!), see this Github repository, which also contains some of the example datasets I use and a literate programming version of this tutorial. Introduction This is a bare-bones introduction to ggplot2, a visualization package in R. It assumes no knowledge of R

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Time Series Matching

January 13, 2012
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Time Series Matching

THIS IS NOT INVESTMENT ADVICE. The information is provided for informational purposes only. If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck. Do you want to know what S&P 500 will do in the next week, month, quarter? One way to make an

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Amateur Mapmaking: Getting Started With Shapefiles

January 13, 2012
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Amateur Mapmaking: Getting Started With Shapefiles

One of the great things about (software) code is that people build on it and out from it… Which means that as well as producing ever more complex bits of software, tools also get produced over time that make it easier to do things that were once hard to do, or required expensive commercial software

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Toying with Google Apps Script

January 11, 2012
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Toying with Google Apps Script

Google offers an access to its services with Apps Scripts (JavaScript). That gives you a possibility to connect your spreadsheet to a fascinating variety of tools like geocoder, stock info, language translator, or email.My java-scri...

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Coming of Age: R and Spatial Data Visualisation

January 10, 2012
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Coming of Age: R and Spatial Data Visualisation

I have been using R (a free statistics and graphics sof

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Aggregation and Restructuring data (from “R in Action”)

January 9, 2012
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Aggregation and Restructuring data (from “R in Action”)

The followings introductory post is intended for new users of R.  It deals with the restructuring of data: what it is and how to perform it using base R functions and the {reshape} package. This is a guest article by Dr. Robert I. Kabacoff, the founder of (one of) the first online R tutorials websites: Quick-R. Kabacoff Read more...

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Lesson 2: Values & Variables (CloudStat School)

January 8, 2012
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This is the second lesson of CloudStat School, Lesson 2: Values & Variables. At the end of the lesson 2, you should know: 1. Inserting values into valuables 2. Calling valuables 3. Simple operation within variables. 2.1 Assign/Insert Values into Vari...

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Scraping R-bloggers with Python – Part 2

January 5, 2012
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In my previous post I showed how to write a small simple python script to download the pages of R-bloggers.com. If you followed that post and ran the script, you should have a folder on your hard drive with 2409 .html files labeled post1.html , post2....

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