It has been a long time coming. Vegan now has in-built, native ability to use restricted permutation designs when testing effects in constrained ordinations and in range of other methods. This new-found functionality comes courtesy of Jari (mainly) and my efforts to have vegan permutation routines use the permute package. ... [Read more...]

Have you wondered how stable are weather forecasts? Since curiosity + R = fun, let’s do a little test. I’ve used a function getWeatherForecast {SmarterPoland} (github release) to download weather forecasts from the Dark Sky API. Hourly forecasts are downloaded every 10 minutes and stored in this repository based on archivist ... [Read more...]

A few days ago, Conrad provided another minor release of Armadillo. Once again, I had created a GitHub-only pre-release of his pre-release which was tested against (then) all ninety (!!) CRAN dependents of our RcppArmadillo package, providing a further test for Conrad's code and uploaded RcppArmadillo 0.4.500.0 to CRAN and Debian once ... [Read more...]

Recently, Harry Long posted not one but four new articles on Seeking Alpha called It’s Amazing How Well Dumb Things … Continue reading → [Read more...]

This is the last post of testing Laplaces Demon algorithms. In the last algorithms there are some which are completely skipped because they are not suitable for the problem. Reversible Jump is for variable selection. Sequential Metropolis-within-Gibbs,... [Read more...]

Similar to SQLDF package providing a seamless interface between SQL statement and R data.frame, PANDASQL allows python users to use SQL querying Pandas DataFrames. Below are some examples showing how to use PANDASQL to do SELECT / AGGREGATE / JOIN operations. More information is also available on the GitHub (https://github.... [Read more...]

Today I’m introducing new version of rmongodb (which I started to maintain) – v1.8.0. Install it from github:

<span>library</span><span>(</span>devtools<span>)</span>
install_github<span>(</span><span>"mongosoup/[email protected]"</span><span>)</span>

Release version will be uploaded to CRAN shortly. This release brings a lot of improvements to rmongodb: Now rmongodb correctly handles arrays. mongo.bson.to.list() rewritten from scratch. R’s ... [Read more...]

Quite a few people emailed me regarding my post on Econ Job Market. This post is about how you can use very basic and simple R tools to help you in sorting through the Job Openings for Economists list from the American Economic Association.This definitely helped me in developing ... [Read more...]

Today, I would like to quickly introduce our package “Rsenal”. It is basically a collection of R functions that we use in our daily lives at Environmental Informatics Marburg. The package is hosted at GitHub and can be installed using … Continue reading → [Read more...]

This blog post will do a quick exploration of the grapheme make up of words in the English. Specifically we will use R and the qdap package to answer 3 questions: What is the distribution of word lengths (number of … Continue reading → [Read more...]

Since I debuted the stepwise correlation algorithm, I suppose the punchline that people want to see is: does it actually … Continue reading → [Read more...]

Today, I am going to share results of an exercise that I carried out recently for a start-up. Intention of the study was to extract those major attributes that are generally driving less/in experienced (or) re-skilled data miners towards the given objective and to understand where they are failing ... [Read more...]

The latest update to the world's most popular statistical data analysis software is now available. R 3.1.2 (codename: "Pumpkin Helmet") makes a number of minor improvements and bug fixes to the R language engine. You can see the complete list of changes here, which include improvements for the log-Normal distribution function, ... [Read more...]

Several months ago, I was looking for a new opportunity, one that would be part of a fundamental shift in cloud technology. I could see that Docker had elevated containers from an operational detail to a hot new developer tool, but what did this mean for the future of infrastructure? ... [Read more...]

DataCamp just launched its latest interactive course: dplyr. This new course was developed in close collaboration with Garrett Grolemund, RStudio’s master instructor. By taking this course, you will be challenged one step at a time to master the essentials about transforming data sets fast and intuitively with the dplyr ... [Read more...]

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Earlier this year I started trying to pull together some of my #f1datajunkie R-related ramblings together in a book form. The project stalled, but to try to reboot it I’ve started publishing it as a living book over on Leanpub. Several of the chapters are incomplete – with TO ... [Read more...]

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In my last post, I discussed how ggplot2 is not always the answer to the question “How should I plot this” and that base graphics were still very useful. Why Do I use ggplot2 then? The overall question still remains: why (do I) use ggplot2? ggplot2 vs lattice For one, ... [Read more...]

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