Monthly Archives: October 2012

City Size and SUHI

October 2, 2012
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City Size and SUHI

In the course of putting together data for my kriging project with the CRN stations, I got another idea related to a small but potentially important corner of the concerns over UHI in the global temperature index. For clarity I suppose I should make it clear that my position is that the UHI bias is

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Slides from “Tapping the Data Deluge with R” lightning talk #rstats #PAWCon

October 2, 2012
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Slides from “Tapping the Data Deluge with R” lightning talk #rstats #PAWCon

Here is my presentation from last night’s Boston Predictive Analytics Meetup graciously hosted by Predictive Analytics World Boston. The talk is meant to provide an overview of (some) of the different ways to get data into R, especially supplementary data sets to assist with your analysis. All code and data files are available at github:

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From Lavaan to OpenMx

October 2, 2012
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From Lavaan to OpenMx

Joel Caldwell gave an example of Confirmatory factor analysis in lavaan. The purpose of this post is to show you how to express this model in OpenMx. The data being modeled are in an object called ratings (see below for the code to create this object as described here. Here’s Joe’s example structural equation model, as implemented in lavaan: require(lavaan) bifactor <- "general.factor =~ Easy_Reservation +...

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R for SAS, SPSS, Stata Users Workshop Redesigned

October 2, 2012
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R for SAS, SPSS, Stata Users Workshop Redesigned

My workshop R for SAS, SPSS and Stata Users has been popular over the years, but it’s time for an overhaul. A common request has been to simplify it, so I have moved data management to a separate 4-hour workshop, … Continue reading →

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A replacement for theme_blank()

October 2, 2012
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A replacement for theme_blank()

ggplot2 has just hit 0.9.2, and with the change comes a new theme system. Previous versions of ggplot2 offered a theme_blank(), which was a stripped-down, essentially blank plotting canvas, but it is now deprecated. github user jrnold has produced a s...

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“Advanced R” Course – November 15-16, 2012

October 2, 2012
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This two days course shows wide variety of “Advanced R” topics ranging from S4 methods and classes to parallel computing in order to provide an exhaustive overview of R capabilities. Continue reading →

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Connecting the real world to R with an Arduino

October 2, 2012
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Connecting the real world to R with an Arduino

If connecting data to the real world is the next sexy job, then how do I do this? And how do I connect the real world to R? It can be done as Matt Shottwell showed with his home made ECG and a patched version of R at useR! 2011. However, there are ot...

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Scraping pages and downloading files using R

October 1, 2012
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Scraping pages and downloading files using R

I have written a few posts discussing descriptive analyses of evaluation of National Standards for New Zealand primary schools.The data for roughly half of the schools was made available by the media, but the full version of the dataset is … Continue reading →

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analyze the area resource file (arf) with r

October 1, 2012
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the arf is fun to say out loud.  it's also a single county-level data table with about 6,000 variables, produced by the united states health services and resources administration (hrsa).  the file contains health information and statistics fo...

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Where in the world is R and RStudio

October 1, 2012
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Where in the world is R and RStudio

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

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