February 2015

SweetheaRstats

February 12, 2015 | 0 Comments

I felt compelled to dust off my 2013 Valentine’s Day #rstats post and make it all Shiny and new again. I used the same math from that post, but made the polygon a bit sharper and used ggplot2 for the plotting. To kick it up a bit, I decided to ... [Read more...]

Quick Intro to XLConnect

February 12, 2015 | 0 Comments

[This article was first published on OutSpoken Data, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your [Read more...]

R Shiny App: Alaska Sea Ice Edge

February 12, 2015 | 0 Comments

A simple app for mapping estimates of Alaska sea ice edge during different months, years, and decades is now formally available. I made this app in R about six months ago and shared an earlier version on Twitter. I have cleaned up the code a bit. Most notably, it now ... [Read more...]

Eight New Ideas From Data Visualization Experts

February 12, 2015 | 0 Comments

This post summarizes and visualizes eight key ideas we’ve heard from data visualization experts. Check out our first Case Study to learn more about using Plotly Enterprise on-premise, on your servers. To get started on free online graphing like in this post, check out our tutorials. Make Interactive Graphs ... [Read more...]

The HP Workshop on Distributed Computing in R

February 12, 2015 | 0 Comments

by Joseph Rickert In the last week of January, HP Labs in Palo Alto hosted a workshop on distributed computing in R that was organized by Indrajit Roy (Principal Researcher, HP) and Michael Lawrence (Genentech and R-core member). The goal was to bring together a small group of R developers ... [Read more...]

Cache Rules Everything Around Me

February 12, 2015 | 0 Comments

Title with apologies to the Wu-Tang Clan. In this post, we're going to be discussing: Rcpp R's C interface The importance of CPU caches Performance benchmarking If none of these things is of interest you and you clicked anyway, please enjoy this picture of a cat: Background Cache is like ... [Read more...]

Epoch.com sponsors RMySQL development

February 11, 2015 | 0 Comments

I’m very pleased to announce that Epoch.com has stepped up as a sponsor for the RMySQL package. For the last 20 years, Epoch.com has built its Internet Payment Service Provider infrastructure on open source software. Their data team, led by Szilard Pafka, PhD, has been using R for ... [Read more...]

MazamaSpatialUtils Package

February 11, 2015 | 0 Comments

This entry is part 15 of 15 in the series Using RMazama Science has just released its first package on CRAN — MazamaSpatialUtils. Here is the description: A suite of conversion scripts to create internally standardized spatial polygons dataframes. Utility …   read more ... [Read more...]

R among top languages on GitHub

February 11, 2015 | 0 Comments

The site githut.info provides quarterly statistics on programming language activity on GitHub, by number of repositories, pushes, forks etc. Ranked by number of active repositories on GitHub, R is the 12th most popular programming language as of Q4 2014. JavaScript, Java and Python appear as the top 3 in the same ... [Read more...]

Make your R plots interactive

February 11, 2015 | 0 Comments

As a part of my daily job, I draw scatterplots, lots of them. And because there are thousands of genes expressed in any mouse or human tissue, my typical plot looks something like this (code). (Actually, it is a comparison of variance that can be attri...
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Code as Magic, and the Vernacular of Data Wrangling Verbs

February 11, 2015 | 0 Comments

It’s been some time now since I drafted most of my early unit contributions to the TM351 Data management and analysis course. Part of the point (for me) in drafting that material was to find out what sorts of thing we actually wanted to say and help identify the ...
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EdinbR: A new R usergroup for Edinburgh

February 11, 2015 | 0 Comments

Inspired by succesful RUGs like LondonR and CambR, I’m pleased to announce a new R usergroup for those in and around Edinburgh: EdinbR! Edinburgh has a large research community using R, spread across different campuses and even universities so a … Continue reading →
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Scheduling R Tasks via Windows Task Scheduler

February 10, 2015 | 0 Comments

This post will allow you to impress your boss with you’re strong work ethic by enabling Windows R users to schedule late night tasks.  Picture it, your boss gets an email at 1:30 in the morning with the latest company … Continue reading →
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More on Quadratic Programming in R

February 10, 2015 | 0 Comments

This post is another tour of quadratic programming algorithms and applications in R. First, we look at the quadratic program that lies at the heart of support vector machine (SVM) classification. Then we'll look at a very different quadratic programming demo problem that models the energy of a circus tent. ... [Read more...]

More on Quadratic Progarmming in R

February 10, 2015 | 0 Comments

This post is another tour of quadratic programming algorithms and applications in R. First, we look at the quadratic program that lies at the heart of support vector machine (SVM) classification. Then we'll look at a very different quadratic programming demo problem that models the energy of a circus tent. ... [Read more...]

Autocommit with ceODBC is slow

February 10, 2015 | 0 Comments

You already know that a SQL INSERT is faster with bulk loading than inserting a record at a time, but what about the effect of autocommit on performance? While this is probably not specific to ceODBC, using autocommit is astonishingly slow. Here is how slow. First, the Python code to ... [Read more...]
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