## Tips for Using our Google Earth Interface to SoilWeb

February 28, 2011
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GE SoilWeb Demo The folks in Lincoln recently changed the links to the OSDs from http:// to https:// style URLs... which seems to cause problems for new versions of Google Earth. I have noticed that when clicking on soil profile sketches an error is re...

## Rstudio

February 28, 2011
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Rstudio, an open source cross-platform IDE for R, seems to be really attractive. It probably will not drag me away from Emacs, but having more options is always a good thing.The only downside of it is that it automatically installs R from the...

## Rstudio

February 28, 2011
By

Rstudio, an open source cross-platform IDE for R, seems to be really attractive. It probably will not drag me away from Emacs, but having more options is always a good thing.The only downside of it is that it automatically installs R from the...

## RStudio – another integrated development environment for R

February 28, 2011
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If you’re in the market for a very easy-to-setup integrated development environment for R, wander over to RStudio.org. They’ve just released a beta version of their freely-available front end for R that runs under Windows, Linux and Mac OS ...

## Release of XLConnect 0.1-3

February 28, 2011
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Mirai Solutions GmbH (http://www.mirai-solutions.com) is proud to announce the first release of XLConnect, a comprehensive and cross-platform R package for manipulating Microsoft Excel files from within R. XLConnect differs from other related R packages in that it is completely cross-platform … Continue reading →

## RStudio: New free IDE for R

February 28, 2011
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Just saw the announcement of the availability of Rstudio, a new (free & open source) integrated development environment for R that works on Windows, Mac, and Linux. Judging from the screenshots, it looks like Rstudio supports syntax highlighting for Sweave & easy PDF creation from Sweave code, which is something I haven't seen anywhere else (on Windows at least)....

## RStudio: New free IDE for R

February 28, 2011
By

Just saw the announcement of the availability of Rstudio, a new (free & open source) integrated development environment for R that works on Windows, Mac, and Linux. Judging from the screenshots, it looks like Rstudio supports syntax highlighting for Sweave & easy PDF creation from Sweave code, which is something I haven't seen anywhere else (on Windows at least)....

## Running a Regression in R

February 28, 2011
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I created another video tutorial on R. This time, I discuss R's lm() command and how to use it for a variety of standard applications.Here is the code that goes with the video:Enjoy!

## Plug for RStudio: powerful, free, and easy to use interactive development environment for R

February 28, 2011
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(click for a bigger picture)As a longtime SAS user, one obstacle for me in using R professionally has been figuring out a process for saving and testing code across several work sessions and integrating code composition and execution. There are a coup...

## RStudio, new open-source IDE for R

February 28, 2011
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RStudio is a new open-source IDE for R which we’re excited to announce the availability of today. RStudio has interesting features for both new and experienced R developers including code completion, execute from source, searchable history, and support for authoring Sweave documents. RStudio runs on all major desktop platforms (Windows, Mac OS X, Ubuntu, or

## RStudio, new open-source IDE for R

February 28, 2011
By

RStudio is a new open-source IDE for R which we’re excited to announce the availability of today. RStudio has interesting features for both new and experienced R developers including code completion, execute from source, searchable history, and support for authoring Sweave documents. RStudio runs on all major desktop platforms (Windows, Mac OS X, Ubuntu, or

## Example 8.28: should we buy snowstorm insurance?

February 28, 2011
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It's been a long winter so far in New England, with many a snow storm. In this entry, we consider a simulation to complement the analytic solution for a probability problem concerning snow. Consider a company that buys a policy to insure its revenue ...

## R Tutorial Series: Two-Way ANOVA with Unequal Sample Sizes

February 28, 2011
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When the sample sizes within the levels of our independent variables are not equal, we have to handle our ANOVA differently than in the typical two-way case. This tutorial will demonstrate how to conduct a two-way ANOVA in R when the sample sizes withi...

## R Tutorial Series: Two-Way ANOVA with Unequal Sample Sizes

February 28, 2011
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When the sample sizes within the levels of our independent variables are not equal, we have to handle our ANOVA differently than in the typical two-way case. This tutorial will demonstrate how to conduct a two-way ANOVA in R when the sample sizes withi...

## Visualizing Soccer League Standings

February 27, 2011
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I feel ashamed for this boring title, but hope that the entry can make up for it. This visualization did inspire me, as a comment did point to my Tour de France visualizations. As with all visualizations, we need data first – this sounds trivial, but is sometimes a frustrating show-stopper. After I found the

February 27, 2011
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We started the RStudio project because we were excited and inspired by R. The creators of R provided a flexible and powerful foundation for statistical computing; then made it free and open so that it could be improved collaboratively and its benefits could be shared by the widest possible audience. It’s better for everyone if the

## Welcome to our Weblog

February 27, 2011
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Welcome to the RStudio weblog! We’ll use the weblog to talk about both the product and its features as well as broader issues that concern the R community.

## John Chambers, the inventor of S, added reference classes to R…

February 26, 2011
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John Chambers, the inventor of S, added reference classes to R 2.12, and oh boy are they fun to look at! What you see in the picture above is a “Hello World” web application for R. It’s written using the Rack R package (not unlike Ruby’s Rac...

## More Chicago Mayoral Analaysis

February 26, 2011
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I perform a precincts-votes analysis on the returns from the Chicago Democratic Mayoral primary of 2011.

## The split-apply-combine paradigm in R

February 25, 2011
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Last night at the DC R Users meetup, which was our largest meetup to date, I gave an introductory presentation on data munging, and spent a bit of time on the split-apply-combine paradigm that I use almost daily in my work. I talked mainly about the packages plyr and doBy, which I use a lot

## ggplot2 joy

February 25, 2011
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I’ve been working on a long-term (25+yr) longitudinal study of rheumatoid arthritis with my boss. He just walked in and asked if I could create a plot showing the trajectory of pain scores over time for each subject, separated by educational level (4 groups). Having now worked with ggplot2 for a while, and learning more

## R 2.12.2 is available

February 25, 2011
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As previously announced, R 2.12.2 is available for download today. Browsing through the various mirrors (using the Download R tool on inside-R.org), it looks like the Windows version is already available on many mirrors; the Mac and Linux versions will follow soon (and of course, sources are available now). The complete list of changes is in the announcement on...

## Tutorial on Distributions in R

February 25, 2011
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Here's a video tutorial I put together to go over how to generate a random sample from one of the commonly known parametric distributions in R.Along the way, I also discuss how some of the properties of estimators are reflected in the computations I pe...

## Mapping the 2011 Chicago Mayoral Democratic Primary

February 25, 2011
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Mapping the Chicago Democratic Mayoral 2011 primary with Ruby, R, and ggplot2

## Setting up a parallel computing cluster for R with OpenSSH and doSNOW

February 25, 2011
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Responding to yesterday's post which included an aside on using parallel processing for by-group computations in R, reader Christian Gunning mused about the possibility of using doSNOW on his network, with OpenSSH to manage the authentication: I sit on a fast campus network and have at least 10 remote cores available that I could farm out for big jobs....

## Example 8.27: using regular expressions to read data with variable number of words in a field

February 25, 2011
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A more or less anonymous reader commented on our last post, where we were reading data from a file with a varying number of fields. The format of the file was:1 Las Vegas, NV --- 53.3 --- --- 12 Sacramento, CA --- 42.3 --- --- 2The complication in the...

## snow and ssh — secure inter-machine parallelism with R

February 24, 2011
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I just threw a post up on Revolutions, which got a lot longer than I planned. And got me thinking. And reading (see refs in previous post). And trying. Turns out that it was way easier than I thought! The problem:From the blog post: " OpenSSH is now available on all platforms. A sensible solution...