Posts Tagged ‘ visualization ’

Rose plot using Deducers ggplot2 plot builder

August 16, 2010
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The (excellent!) LearnR blog had a post today about making a rose plot in ggplot2. Following today’s announcement, by Ian Fellows, regarding the release of the new version of Deducer (0.4) offering a strong support for ggplot2 using a GUI plot builder, Ian also sent an e-mail where he shows how to create a rose plot using the new...

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ggplot2 plot builder is now on CRAN! (through Deducer 0.4 GUI for R)

August 16, 2010
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Ian fellows, a hard working contributer to the R community (and a cool guy), has announced today the release of Deducer (0.4) to CRAN (scheduled to update in the next day or so). This major update also includes the release of a new plug-in package (DeducerExtras), containing additional dialogs and functionality. Following is the e-mail he sent out with...

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Wikileaks Attack Data by Year and Type Projected on Afghanistan Regional Map

August 7, 2010
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Wikileaks Attack Data by Year and Type Projected on Afghanistan Regional Map

Below is a visualization of the Wikileaks data produced in collaboration with Michael Dewar. This plot shows attacks in the data set by year and type, projected onto a map of Afghanistan with district boundaries. This visualization is certainly not perfect, i.e., some colors are difficult to discern, but it does provide added insight to the

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Benford’s Law Tests for Wikileaks Data

August 1, 2010
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Benford’s Law Tests for Wikileaks Data

In my first post on the WL Afghanistan data I provided a very high-level view of the data, and found that it generally met expectations for frequency given its context and presumed data generating process. Next, I will look a bit deeper at this process and test if the observed frequencies of reports have properties

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Viewing a bipartite network

July 30, 2010
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Viewing a bipartite network

A short modification of a function to draw bipartite networks in matrix form, with sorting of the network to reflect its nestedness.

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Web applications with R

July 28, 2010
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Web applications with R

Video of the talk “Web applications with R” by Jeroen Ooms at the Los Angeles area R Users Group in January 2010:

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Hadley Wickham’s ggplot2 / Data Visualization Course Materials

July 27, 2010
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Hadley Wickham, creator of ggplot2, an immensely popular framework for Tufte-friendly data visualization using R, is teaching two short courses at Vanderbilt this week. Once we opened registration to Vanderbilt students and staff we instantly filled al...

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Anatomy of a Life-Milestone Announcement on Facebook

July 15, 2010
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Anatomy of a Life-Milestone Announcement on Facebook

As I have mentioned, I recently returned for a lovely trip to Europe. While on vacation my brilliant, beautiful, funny, and all around perfect girlfriend accepted my invitation to be my wife. Pause for shared overwhelming feeling of joy… While I am still basking in the glow of being the luckiest man on Earth, as

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QQ plot of p-values in R using base graphics

July 14, 2010
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Update Tuesday, September 14, 2010: Fixed the ylim issue, now it sets the y axis limit based on the smallest observed p-value. A while back Will showed you how to create QQ plots of p-values in Stata and in R using the now-deprecated sma package. A bi...

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Visualization of regression coefficients (in R)

July 2, 2010
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Visualization of regression coefficients (in R)

Update (07.07.10): The function in this post has a more mature version in the “arm” package. See at the end of this post for more details. * * * * Imagine you want to give a presentation or report of your latest findings running some sort of regression analysis. How would you do it? This was exactly the question...

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