Monthly Archives: April 2014

Exploring US healthcare data

April 13, 2014
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A few days ago, the Centers for Medicare and Medicaid Services (CMS) released some unprecedented data on the US healthcare system. The data consists of 9 million rows showing how much each doctor in the US charged Medicare, for what, and how much Medicare paid out. It doesn't quite cover everything (for example, services with less than 11...

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Survey: Computing Your Own Post-Stratification Weights in R

April 13, 2014
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Social Science Goes R: Weighted Survey Data Survey Data: Computing Your Own Weights The second installment in my series on working with survey data in R explains how to compute your own post-stratification weights to use with survey data. For a more...

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Finally, an easy way to fix the horizontal lines in ggplot2 maps

April 13, 2014
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ggplot2 tries to make it super easy to add country or state borders to your map, and for the most part it works great as long as you include the entire map region in your plot (all the states or the entire world map for example). A long standing issue with the ggplot2 borders() function

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Open Science Through R

April 13, 2014
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There's so much being written about R these days, and justifiably so. If you use R for your econometrics, you should also keep in mind that its applicability is far wider than statistical analysis.  A big HT to the folks at Quandl for leading me to a nice overview of the way in which R is enabling some big...

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ChIPseeker for ChIP peak annotation

April 13, 2014
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ChIPpeakAnno WAS the only one R package for ChIP peak annotation. I used it for annotating peak in my recent study. I found it does not consider the strand information of genes. I reported the bug to the authors, but they are reluctant to change. Read More: 2903 Words Totally

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Earthquakes: Land / Ocean Distribution

April 13, 2014
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Earthquakes: Land / Ocean Distribution

The next stage in my earthquake analysis project is to partition the events into groups with epicentre over land or water. Since our existing catalog contains the latitude and longitude for the epicentres, it was a relatively simple matter to pipe these into gmtselect and label the events accordingly. The resulting data when sucked into

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Following open courseware

April 13, 2014
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I love massive open online courses such as provided on Coursera and edX. So I enrolled in the Data Analysis for Genomics course on edX. I am not alone there as seen from this posting on FreshBiostats.I was shocked when I took the Pre-Course R self-asse...

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GeoCoding, R, and The Rolling Stones – Part 1

April 12, 2014
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GeoCoding, R, and The Rolling Stones – Part 1

Originally posted on Rolling Your Rs:In this article I discuss a general approach for Geocoding a location from within R, processing XML reports, and using R packages to create interactive maps. There are various ways to accomplish this, though using Google’s GeoCoding service is a good place to start. We’ll also talk a bit…

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WrightMap 1.1 Ancillary Antelope Released

April 12, 2014
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WrightMap 1.1 Ancillary Antelope Released

The new version of WrightMap (Ancillary Antelope) is now available on CRAN. Remember that you can visit the package tutorials on our website. This new version includes: - New function to create fit graphs like the example below. - Parameter conversion: Function for calculating Thurstonian thresholds from Master’s deltas. - New examples. - Added axis range controls. - Made histogram...

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Visualizing Age-Length Keys

April 12, 2014
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Visualizing Age-Length Keys

Lately, I have been interested in methods related to age-length keys. One aspect of this interest has been in visualizing age-length keys. I had seen various visualizations in publications and wanted to be able to reproduce those relatively efficiently. To … Continue reading →

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