Publications by Noam Ross
More ESA 2014 Program Text-Mining: Topics as Communities
In my first pass at text analysis of the ESA program, I looked at how the frequency of words used in the ESA program differed from last year to this year. There are much more sophisticated ways at looking at word use in text, though, and I began to dive into the text-mining literature to find other ways to draw insight from ESA abstracts. One met...
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Ongoing learning with user groups
Cross-posted from the Software Carpentry Blog. For the past two years I’ve run the UC Davis R Users’ Group (D-RUG). In this post, I’ll (1) outline the structure of D-RUG, and (2) summarize some lessons learned, and (3) discuss how such users’ groups could act to support and complement SWC’s workshops. Per Bill’s suggestion, we could d...
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Tim Bowles on multivariate stats with vegan
Today, Tim Bowles gave this presentation on the vegan package to the Davis R Users’ Group. The screencast and slides are below. You can also download Tim’s RStudio project with all the code, data, figures, and slides presented here. Thanks to Tim for a great session! Related To leave a comment for the author, please follow the link and comm...
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Carl Boettiger on accessing online data with ROpenSci
*Today, Carl Boettiger gave a tutorial on the ROpenSci project and how to use their many packages to connect to online data repositories to retrieve and up deposit data. Here’s our screencast of the talk. All the code from this talk is available at this github repository, and you can download it as a *.zip file here. Thanks to Carl for for a g...
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Making Maps in R with Ryan Peek and Michele Tobias
Today, Ryan Peek and Michele Tobias gave an introduction to making maps in R. Here’s the webcast: (Pardon the little scuffle at the beginning and as we switched computers halfway through. Still getting the hang of hangouts.) Resources: Download all of Ryan’s code and HTML files here. See Michele’s slides on Slideshare here. Code for Miche...
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An introduction to ggplot with Myfanwy Johnston
Last week at the Davis R Users’ Group, Myfanwy Johnston gave an introduction to to the powerful and ubiquitous ggplot2 package for plotting in R. See below for the screencast and her particularly enlightening figure of how ggplot’s syntax and conceptual approach. Myfanwy also placed all her slides, code, and links to more ggplot resources in ...
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Back to basics: High quality plots using base R graphics
Today at the Davis R Users’ Group, Michael Koontz gave tour de force lesson in using R’s base graphics capabilities to plot data. Here’s the video: Get Michael’s excellent annotated script, which covers much more than we got to during our tutorial, here. Related To leave a comment for the author, please follow the link and comment on t...
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Visualizing fits, inference, implications of (G)LMMs with Jaime Ashander
A couple of weeks at the Davis R Users’ Group, Jaime Ashander gave a presentation on and visualizing and diagnosing (G)LMMs in R. Here’s the video: Jaime also wrote up the notes from his talk, including all the code, on his blog here (with the raw R Markdown file on github here). The material in the blog post is expanded and improved upon fr...
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First Steps with Structural Equation Modeling
Last Friday at the Davis R Users’ Group, Grace Charles gave a presentation on structural equation modeling in R using the Lavaan package. Here’s the video and her slides. We’ve also posted Grace’s script from the presentation as a gist here. More resources that Grace mentioned in her talk below. Resources Jim Grace’s website at USGS ...
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Qualitative Text Analysis in R with RQDA
Last Friday at the Davis R Users’ Group, Mallory Johnson gave a presentation on RQDA, an R-based GUI tool for doing coding on documents for use in qualitative text analysis. Here’s the video, and you can view the slides here [Sorry about reverb in the video] Resources The RQDA home page More RQDA instructional videos Related To leave a co...
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