August 2014

CRAN release jsonlite 0.9.10 (RC)

August 19, 2014 | 0 Comments

The jsonlite package is a JSON parser/generator optimized for the web. It implements a bidirectional mapping between JSON data and the most important R data types. This is very powerful for interacting with web APIs, or to build pipelines where...
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Integrating R with production systems using an HTTP API

August 19, 2014 | 0 Comments

by Nick Elprin, Co-Founder of Domino Data Lab We built a platform that lets analysts deploy R code to an HTTP server with one click, and we describe it in detail below. If you have ever wanted to invoke your R model with a simple HTTP call, without dealing with ...
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Hijacking R Functions: Changing Default Arguments

August 19, 2014 | 0 Comments

I am working on a package to collect common regular expressions into a canned collection that users can easily use without having to know regexes. The package, qdapRegex, has a bunch of functions in the form of rm_xxx. The only … Continue reading → [Read more...]

Visualize pre-post comparison of intervention #rstats

August 19, 2014 | 0 Comments

My sjPlot-package was just updated on CRAN, introducing a new function called sjp.emm.int to plot estimated marginal means (least-squares means) of linear models with interaction terms. Or: plotting adjusted means of an ANCOVA. The idea to this function came up when we wanted to analyze the effect of ... [Read more...]

Introducing Rfiglet: ASCII logos from the comfort of R

August 19, 2014 | 0 Comments

The Rfiglet Package For those who don't know what figlet is, it's a command line utility for creating ascii logos.  Rfiglet, therefore, is a set of R bindings for figlet. Works about like you would expect: There are over 150 fonts available, and you can see an example of each one ... [Read more...]

Transform point shapefile to SpatStat object

August 19, 2014 | 0 Comments

Today I wanted to do some point pattern analysis in R using the fantastic package spatstat.The problem was that I only had a point shapefile, so I googled a way to transform a shapefile into a ppp object (which is the point pattern object used by spats... [Read more...]

googleVis 0.5.5 released

August 19, 2014 | 0 Comments

Earlier this week we released googleVis 0.5.5 on CRAN. The package provides an interface between R and Google Charts, allowing you to create interactive web charts from R. This is mainly a maintenance release, updating documentation and minor issues.Sc...
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Data Cleaning is a critical part of the Data Science process

August 18, 2014 | 0 Comments

A New York Times article yesterday discovers the 80-20 rule: that 80% of a typical data science project is sourcing cleaning and preparing the data, while the remaining 20% is actual data analysis. The article gives short shrift to this important task by calling it "janitorial work", but whether you call it ... [Read more...]

What are the Odds of an Independent Scotland?

August 18, 2014 | 0 Comments

“For things to remain the same, everything must change.” (Gattopardo by Giuseppe Tomasi di Lampedusa) In less than a month, Scots will decide if they want Scotland tied or apart of UK. Over the last days, I’ve noticed a variety of projections in the British press about this, but ... [Read more...]

Example 2014.10: Panel by a continuous variable

August 18, 2014 | 0 Comments

In Example 8.40, side-by-side histograms, we showed how to generate histograms for some continuous variable, for each level of a categorical variable in a data set. An anonymous reader asked how we would do this if both the variables were continuous. ... [Read more...]

GEFCom 2014 energy forecasting competition is underway

August 17, 2014 | 0 Comments

GEFCom 2014 is the most advanced energy forecasting competition ever organized, both in terms of the data involved, and in terms of the way the forecasts will be evaluated. So everyone interested in energy forecasting should head over to the competition webpage and start forecasting: www.gefcom.org. This time, the ... [Read more...]

Hayward/San Leandro Housing Prices

August 17, 2014 | 0 Comments

I’ve done a previous post about the salaries of data scientists, but now I’m going to look at one of the negative sides of all the high salaries generated by the tech field in the Bay Area – real estate prices. A … Continue reading →
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Changes to FSA — Estimating Abundance

August 17, 2014 | 0 Comments

I mentioned previously, that I have been updating the Mark-Recapture vignettes.  That has morphed into a document that is an update of the Mark-Recapture Closed and Open vignettes and the depletion/removal vignettes and associated FSA functions.  Some of the changes … Continue reading → [Read more...]

21 R navigation tools

August 17, 2014 | 0 Comments

Navigation gets you from where you are to where you want to be. Speaking of navigation, you can jump to selected sections of this post: Navigation; R-bloggers; Task views; Rdocumentation.org; sos package; ??; apropos; ls; methods; getAnywhere; :::; find; args; grep; %in%; str; getwd; file.choose; Spyglass summary; browser; See also. ... [Read more...]

Quicksort speed, just in time compiling and vectorizing

August 17, 2014 | 0 Comments

I was reading the Julia documentation the other day. They do speed comparisons to other languages. Obviously R does not come out very well. The R code for quicksort is here and I noticed it was not vectorized at all. So I wondered if it could be improv... [Read more...]
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