As the normal distribution is sort of the default choice when modeling continuous data (but not necessarily the best choice), the Poisson distribution is the default when modeling counts of events. Indeed, when all you know is the number of events during a certain period it is hard to think ... [Read more...]

Reproducible documents provide an efficient way to produce reports by automatically generating content from code chunks within the report. The processing of a source document, that contains code chunks, to a final document, that contains automatically-generated content, is typically one … Continue reading → [Read more...]

At useR! 2014, one of the most anticipated presentations was Joe Cheng’s Shiny: R made... [Read more...]

by Joseph Rickert The ancient Egyptians were a people with long memories. The lists of their pharaohs went back thousands of years, and we still have the names and tax assessments for certain persons and institutions from the time of Ramesses II. When Herodotus began writing about Egypt and the ... [Read more...]

  Machines take me by surprise with great frequency (Alan Turing) Imagine a 8×8 grid in which cells can be alive (black colored) or empty (light gray colored): As with the One-dimensional Cellular Automata, the next state of a cell is a function of the states of the cell’s nearest neighbors (... [Read more...]

The EARL Conference www.earl-conference.com is  just over a week away. EARL is the first conference dedicated to the commercial usage of R. If you want to see how a host [Read more...]

SPSS contains a very useful set of functions that R lacks. If you’re lucky enough to have access to SPSS, you can use SPSS and R very well together. If not, it’s easy to add these functions to R. The … Continue reading → [Read more...]

This post has been transferred from another blog platform and could have dead links / incorrect lay-out. Please note: the syntax described here is no longer up-to-date, please refer to the readme at simmer’s GitHub page. The simmer package grew out of a personal need for a simple rapid development ... [Read more...]

Introduction Extrapolation Introduction An excellent little post (Zoom, zoom googleVis) showed up recently on R-Bloggers. The author Markus Gesmann is the maintainer of the googleVis package that links R to the Google Charts API. My first thought was: could I embed charts like those in R Markdown documents that could ... [Read more...]

As more companies explore the benefits that Hadoop may provide, the opportunities to better understand the technology are myriad and unequal. As a provider of in-Hadoop analytics, Revolution Analytics is participating in the coming Hortonworks seminar series. We will be on site to discuss how to deploy R-based analytics within ... [Read more...]

You just sent a long R job running. How to know when it’s done? Have it notify you by beeping, sending you a text, or sending you a notification via pushbullet! beepr You can use Rasmus Bååth’s beepr package to have your computer play a sound. Install ... [Read more...]

I uploaded the newest version of rNOMADS to CRAN yesterday. This one has a new plotting function for wind altitude azimuth, and magnitude (see below for plot and source code). I also added a function for reading GRIB inventories, fixed a few typos, and tweaked a few functions. In other ... [Read more...]

Okay, as I wrote yesterday, ifelse is rather slow, at least compared to working in C++. As my current project is using ifelse rather a lot, i decided to write a small utility function. In the expectation that I will … Weiterlesen → [Read more...]

In our first meetup, we were introduced to R as a data analysis tool. Dr. Dennis Murphy spent some time telling us about a brief history of R and then went into a brief introduction to using R for data analysis for the beginner. You can find slides for this ... [Read more...]

With yesterday's announcement of littler 0.2.0, I kept thinking about a few not-so-frequently-asked but recurring questions about littler. And an obvious one if of course the relationship to Rscript. As we have pointed out before, littler preceded Rscript. Now, with Rscript being present in every R installation, it is of course ... [Read more...]

The FPP resources page has recently been updated with several new additions including R code for all examples in the book. This was already available within each chapter, but the examples have been collected into one file per chapter to save copying and pasting the various code fragments. Slides from ... [Read more...]

If a team scores X runs, what's the probability it will win the game? The post Baseball: Probability of winning conditional on runs, hits, walks and errors appeared first on Decision Science News. [Read more...]

Before beginning this post, I’d like to notify readers that I have a webcast tomorrow (Wednesday, Sep. 3) at 4:30 … Continue reading → [Read more...]

As someone who has spent a significant amount of time ‘data wrangling’ outside the field... [Read more...]

We have a few pieces of swag that we are raffling off to the community... [Read more...]