Articles by hadleywickham

httr 0.5

September 3, 2014 | hadleywickham

httr 0.5 is now available on CRAN. The httr packages makes it easy to talk to web APIs from R. Learn more in the quick start vignette. This release is mostly bug fixes and minor improvements, but there is one major new feature: you can now save response bodies directly to ... [Read more...]

httr 0.4

July 31, 2014 | hadleywickham

httr 0.4 is now available on CRAN. The httr packages makes it easy to talk to web APIs from R. The most important new features are two new vignettes to help you get started and to help you make wrappers for web APIs. Other important improvements include: New headers() and cookies() ... [Read more...]

New data packages

July 23, 2014 | hadleywickham

I’ve released four new data packages to CRAN: babynames, fueleconomy, nasaweather and nycflights13. The goal of these packages is to provide some interesting, and relatively large, datasets to demonstrate various data analysis challenges in R. The package source code (on github, linked above) is fully reproducible so that you ... [Read more...]

Introducing tidyr

July 22, 2014 | hadleywickham

tidyr is new package that makes it easy to “tidy” your data. Tidy data is data that’s easy to work with: it’s easy to munge (with dplyr), visualise (with ggplot2 or ggvis) and model (with R’s hundreds of modelling packages). The two most important properties of tidy ... [Read more...]

dplyr 0.2

May 21, 2014 | hadleywickham

I’m very excited to announce dplyr 0.2. It has three big features: improved piping courtesy of the magrittr package a vastly more useful implementation of do() five new verbs: sample_n(), sample_frac(), summarise_each(), mutate_each and glimpse(). These features are described in more detail below. To learn more ... [Read more...]

roxygen2 4.0.1

May 19, 2014 | hadleywickham

We’re pleased to announce a new version of roxygen2. Roxygen2 allows you to write documentation comments that are automatically converted to R’s standard Rd format, saving you time and reducing duplication. This release is a major update that provides enhanced error handling and considerably safer default behaviour. Roxygen2 ... [Read more...]

reshape2 1.4; Kevin Ushey joins Rstudio

May 9, 2014 | hadleywickham

reshape2 1.4 is now available on CRAN. This version adds a number of useful arguments and messages, but mostly importantly it gains a C++ implementation of melt.data.frame(). This new method should be much much faster (__10x) and does a better job of preserving existing attributes. For full details, see ... [Read more...]

devtools 1.5

April 8, 2014 | hadleywickham

devtools 1.5 is now available on CRAN. It includes four new functions make it easier to add useful infrastructure to packages: add_test_infrastructure() will create testthat infrastructure when needed. add_rstudio_project() adds an Rstudio project file to your package. add_travis() adds a basic template for travis-ci. add_build_... [Read more...]

httr 0.3

March 21, 2014 | hadleywickham

We’re very pleased to announce the release of httr 0.3. httr makes it easy to work with modern web apis so that you can work with web data almost as easily as local data. For example, this code shows how might find the most recently asked question about R on ... [Read more...]

dplyr 0.1.3

March 16, 2014 | hadleywickham

dplyr 0.1.3 is now on CRAN. It fixes an incompatibility with the latest version of Rcpp, and a number of other bugs that were causing dplyr to crash R. See the full details in the release notes. [Read more...]

testthat 0.8 (and 0.8.1)

February 25, 2014 | hadleywickham

We’re pleased to announce a new major version of testthat. Version 0.8 comes with a new recommended structure for storing your tests. To better meet CRAN recommended practices, we now recommend that tests live in tests/testthat, instead of inst/tests. This makes it possible for users to choose whether ... [Read more...]

dplyr 0.1.2

February 25, 2014 | hadleywickham

We’re pleased to announce a new minor version of dplyr. This fixes a number of bugs that crashed R, and considerably improves the functionality of select(). You can now use named arguments to rename existing variables, and use new functions starts_with(), ends_with(), contains(),  matches() and num_range() ... [Read more...]

dplyr 0.1.1

January 30, 2014 | hadleywickham

We’re pleased to announce a new minor version of dplyr. This fixes a few bugs that crashed R, adds a few minor new features (like a sort argument to tally()), and uses shallow copying in a few more places. There is one backward incompatible change: explain_tbl() has been ... [Read more...]

roxygen2 3.1.0

January 30, 2014 | hadleywickham

We’re pleased to announce a new version of roxygen2. The biggest news is that roxygen2 now recognises reference class method docstrings and will automatically add them to the documentation. 3.1.0 also offers a number of minor improvements and bug fixes, as listed on the github release notice. As always, you ... [Read more...]

Introducing dplyr

January 20, 2014 | hadleywickham

dplyr is a new package which provides a set of tools for efficiently manipulating datasets in R. dplyr is the next iteration of plyr, focussing on only data frames. dplyr is faster, has a more consistent API and should be easier to use. There are three key ideas that underlie ... [Read more...]

roxygen2 3.0.0

December 9, 2013 | hadleywickham

We’re pleased to announce a new version of roxygen2. The biggest news is that you can painlessly document your S4 classes, S4 methods and RC classes with roxygen2 – you can safely remove workarounds that used @alias and @usage, and simply rely on roxygen2 to do the right thing. Roxygen2 ... [Read more...]

Upcoming courses: Dec 2013

December 2, 2013 | hadleywickham

We’re pleased to announce two upcoming in-person training opportunities: Advanced R programming. SF, Dec 16-17. Learn the most important topics from advanced R programming in person. One day one, you’ll learn about metaprograming, functional programming and object oriented programming in R, as well general best practices for programming. ... [Read more...]

devtools 1.4 now available

November 27, 2013 | hadleywickham

We’re very pleased to announce the release of devtools 1.4. This version brings many improvements to package installation, including automated vignette building, and a better way of referring to repos on github, install_github("hadley/devtools"). There are also many other bug fixes and minor improvements; to see them all, ... [Read more...]

The RStudio CRAN mirror

June 10, 2013 | hadleywickham

RStudio maintains its own CRAN mirror, http://cran.rstudio.com. The server itself is a virtual machine run by Amazon’s EC2 service, and it syncs with the main CRAN mirror in Austria once per day. When you contact http://cran.rstudio.com, however, you’re probably not talking to ... [Read more...]

Version 1.2 of devtools released

April 17, 2013 | hadleywickham

We’re very pleased to announce the release of devtools 1.2. This version continues to make working with packages easier by increasing installation speed (skipping the build step unless local = FALSE), enhancing vignette handling (to support the non-Sweave vignettes available in R 3.0.0), and providing better default compiler flags for C and ... [Read more...]
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