Posts Tagged ‘ r-project ’

Technical analysis of Kansas out-of-state Electronic Benefit Transfer payments

May 16, 2011
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Computer Assisted Reporting Ryan Kath from NBC Action News in Kansas City obtained three months of summary data for out-of-state public assistance payments from the Kansas Department of Social and Rehabilitation Services. These electronic reports wer...

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One minor detail for getting 64-bit R-2.13 running with Eclipse/StatET

May 9, 2011
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Upgrading from R-2.12 to R-2.13 was fairly painless, except for one minor hiccup in trying to get the 64-bit version running on my installation of Eclipse + StatET under Windows 7. The setup instructions are almost entirely the same as I have outlined ...

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Extracting sea surface temperatures from NOAA’s OISSTv2

March 1, 2011
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NOAA’s Physical Sciences Division produces a global map of weekly averaged sea surface temperatures, derived from satellite sources. The data can be found at http://www.esrl.noaa.gov/psd/data/gridded/data.noaa.oisst.v2.html. I’ve put togeth...

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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 ...

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Converting MATLAB and R date and time values

February 20, 2011
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For some unknown reason, MATLAB codes its date/time values as the number of elapsed days starting from January 1 in the year 0000. R uses the equally arbitrary, but much more widespread POSIX/Unix epoch as a reference for time keeping, so that R’...

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Screen Scraping, Mapping in R

February 19, 2011
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by Earl F. Glynn, Kansas Watchdog The PowerPoint slides below give an overview of screen scraping and mapping in R. Details with comments about many of the R statements can be found in these articles: Simple R Screen Scraping Example R Screen Scraping:...

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Analysis and Mapping of Kansas Judicial Retention Elections by County Using R

February 19, 2011
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by Earl F. Glynn, Kansas Watchdog This article describes how the data obtained from scraping 105 pages of county election data were analyzed and mapped using R. Background The Kansas Secretary of State published Nov. 2010 election results online, inclu...

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R Reshape Examples

February 19, 2011
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by Earl F. Glynn, Kansas Watchdog The goal of this article is to describe how to “reshape” data from screen scraping to make analysis with existing tools easier. Background The Kansas Secretary of State published Nov. 2010 election results ...

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R Screen Scraping: 105 Counties of Election Data

February 18, 2011
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by Earl F. Glynn, Kansas Watchdog The goal of this article is to show how to visit 105 online web pages programmatically and “scrape” data from them to form a statewide summary of election data in Kansas. An earlier article gave details of ...

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Accessing NOAA tide data with R

February 18, 2011
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Here's some R code that can be used to download archived tide height data from NOAA's CO-OPS OPeNDAP server. The code makes use of RCurl to send a URL query to the server, and then splits apart the resulting data into a data frame.

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