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At RStudio, we want you to be effective R users. As well as creating great software, we want to make it easier for you to master R. To this end, we’re very happy to announce our new training offerings.

We’re kicking off with two public courses:

We’ve also planned a number of other courses, based on our experience with the R community, seeing what’s hard to learn and what people are struggling with. These courses are available now if you’d like us to come to your company, and based on your feedback we’ll offer public versions in the near future.

You can also read about our instructors and our philosophy.

We’re happy to announce a new version of httr, a package designed to make it easy to work with web APIs. Httr is a wrapper around RCurl, and provides:

  • functions for the most important http verbs: GET, HEAD, PATCH, PUT, DELETE and POST.
  • automatic cookie handing across requests, connection sharing, and standard SSL config.
  • a request object which captures the body of the request along with request status, cookies, headers, timings and other useful information.
  • easy ways to access the response as a raw vector, a character vector, or parsed into an R object (for html, xml, json, png and jpeg).
  • wrapper functions for the most common configuration options: set_cookies, add_headers, authenticate, use_proxy, verbose, timeout.
  • support for OAuth 1.0 and 2.0. Use oauth1.0_token and oauth2.0_token to get user tokens, and sign_oauth1.0 and sign_oauth2.0to sign requests. The demos directory has six demos of using OAuth: three for 1.0 (linkedin, twitter and vimeo) and three for 2.0 (facebook, github, google).

Track httr’s development on github, and see what’s new in this version.

The latest version of lubridate offers some powerful new features and huge speed improvements. Some areas, such as date parsing are more than 50 times faster. lubridate 1.2.0 also fixes those pesky NA bugs in 1.1.0. Here’s some of what you’ll find:

Parsers can now handle a wider variety date formats, even within the same vector

dates <- c("January 31, 2010", "2-28-2010", "03/31/2000")
dates <- mdy(dates)
## [1] "2010-01-31 UTC" "2010-02-28 UTC" "2000-03-31 UTC

Stamp lets you display dates however you like, by emulating an example date

stamper <- stamp("1 March 1999")
[1] "31 January 2010"  "28 February 2010" "31 March 2000"

New methods add months without rolling past the end of short months. Its hard to find a satisfactory way to implement addition with months, but the %m+% and %m-% operators provide a new option that wasn’t available before.

ymd("2010-01-31") %m+% months(1:3)
[1] "2010-02-28 UTC" "2010-03-31 UTC" "2010-04-30 UTC"

lubridate 1.2.0 includes many awesome ideas and patches submitted by lubridate users, so check out what is new. For a complete list of new features and contributors, see the package NEWS file on github.

Using the web logs collected when users download RStudio, we’ve prepared the following two maps showing where RStudio is being used, over the whole globe and just within the continental USA. Obviously this data is somewhat biased, as it reflects the number of downloads of RStudio, rather than the number of users of R (which we’d really love to know!). However, based on a month’s worth of data, we think the broad patterns are pretty interesting.

We made the maps by translating IP addresses to latitude and longitude with the free GeoIP databases provided by MaxMind. To make it easier to see the main patterns for each map, we used k-means clustering to group the original locations into 300 clusters for the world and 100 clusters for the US,  then used ggplot2 to display the number of users in each cluster with the area of each bubble.

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