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Higher order functions are functions that take other functions as arguments or return functions as their result. In this set of exercises we will focus on the former. R has a set of built-in higher order functions: Map, Reduce, Filter, Find, Position, Negate. They enable us to complete complex operations ... [Read more...]

While many media properties including the New York Times, FiveThirtyEight and FlowingData use the R language to prepare graphics for publication, they often use Adobe Illustrator or similar graphics tools to touch up the last 5% or so of the graphics. Not so for Switzerland's news site swissinfo.ch, whose data ... [Read more...]

A maintenance release of RcppStreams is now on CRAN. RcppStreams brings the excellent Streamulus C++ template library for event stream processing to R. Streamulus, written by Irit Katriel, uses very clever template meta-programming (via Boost Fusion... [Read more...]

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Cytoscape is a popular open-source program for visualizing and analyzing networks (biological and otherwise). This summer I have been working on a Google Summer of Code project with the National Resource for Network Biology that aims to make it easier... [Read more...]

Today I was so pleased to see a new data package hit CRAN, and how wonderful to see such accomplished women writing R packages. What a great new data package on CRAN! And always great to see more women authors in #rstats https://t.co/nROMibqPxX pic.twitter.com/UEayWgx9... [Read more...]

Cytoscape is a popular open-source program for visualizing and analyzing networks (biological and otherwise). This summer I have been working on a Google Summer of Code project with the National Resource for Network Biology that aims to make it easier... [Read more...]

You love R and you want your colleagues to love R too. In our latest post we will walk you through seven tips and tricks for hosting a successful R demo at your company that will really impress your colleagues. You can read the full post at 7 Tips F... [Read more...]

by Joseph Rickert My guess is that a good many statistics students first encounter the bivariate Normal distribution as one or two hastily covered pages in an introductory text book, and then don't think much about it again until someone asks them to generate two random variables with a given ... [Read more...]

I recently promised a "NetCDF in R" cheat sheet to a friend, and I thought it might make a useful tutorial. NetCDF files are often used to distribute gridded, multidimensional spatial data such as sea surface temperature, chlorophyll-a levels and so on. NetCDF is more than just a file format, ... [Read more...]

This blog- or rather its predecessor Google site (now defunct)- originally began in 2009 as an auxiliary tool to communicate on-line with my students in the Universidad Nacional Abierta of Venezuela (UNA), a distance education university where I teach math and statistics. The original purpose of that site was to ... [Read more...]

Pandoc is awesome. It’s the universal translator for plain-text documents. I especially like that it can do inline citations. I write @Jones2005 proved aliens exist and pandoc produces “Jones (2005) proved aliens exist”. But it doesn’t quite d... [Read more...]

The U.S. Geological Survey (USGS) recently published a report describing a groundwater-flow model of the Wood River Valley (WRV) aquifer system. What makes this report unique (at least in my opinion) was the authors’ desire to make their work as r... [Read more...]

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Tired of trying to get your data to print right or formatting it in a program like excel? Try out fashion() from the corrr package: d gender age height fte #__ 1 Male NA 188.0000 NA #__ 2 Female 28.11111 NA 0.78273 #__ 3 74.30000 168.7891 0.90000 library(corrr) fashion(d) #__ gender age height fte #__ 1 Male 188.00 #__ 2 Female 28.11 .78 #__ 3 74.30 168.79 .90 But how does it work ... [Read more...]