Blog Archives

When k-means Clustering Fails

February 2, 2016
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When k-means Clustering Fails

This entry is part 19 of 19 in the series Using RLetting the computer automatically find groupings in data is incredibly powerful and is at the heart of “data mining” and “machine learning”. One of the most widely used methods …   read more ...

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Visualizing Bikeshare Data

November 6, 2015
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Visualizing Bikeshare Data

This entry is part 18 of 18 in the series Using RSeattle’s Pronto bikeshare system recently announced a Data Challenge for data visualization using their first year of trip data. As avid cyclists and data analysis junkies, we of course took …   read more ...

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Function Argument Lists and missing()

August 21, 2015
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This entry is part 17 of 17 in the series Using RSometimes it is useful to write a wrapper function for an existing function. In this short example we demonstrate how to grab the list of arguments passed to a …   read more ...

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MazamaSpatialUtils Package

February 11, 2015
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MazamaSpatialUtils Package

This entry is part 15 of 15 in the series Using RMazama Science has just released its first package on CRAN — MazamaSpatialUtils. Here is the description: A suite of conversion scripts to create internally standardized spatial polygons dataframes. Utility …   read more ...

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R Class for Wildfire Scientists

October 29, 2014
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R Class for Wildfire Scientists

This entry is part 14 of 14 in the series Using RMazama Science has just finished creating class materials on using R for the AirFire team at the USFS Pacific Wildland Fire Sciences Lab in Seattle, Washington. This team of …   read more ...

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Population Databrowser

May 14, 2014
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Population Databrowser

This entry is part 13 of 13 in the series Using RAt Mazama Science we produce web based tools for interrogating important datasets. We are proud to announce the release of a new Population databrowser that allows users to review …   read more ...

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Using R — Package Installation Problems

February 12, 2013
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This entry is part 3 of 12 in the series Using RThe post titled Installing Packages described the basics of package installation with R.  The process is wonderfully simple when everything goes well.  But it can be maddening when it …   read more ...

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Using R — Packaging a C library in 15 minutes

November 16, 2012
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This entry is part 14 of 12 in the series Using RYes, this post condenses 50+ hours of learning into a 15 minute tutorial.  Read ‘em and weep.  (That is, you read while I weep.) OK.  For the last week …   read more ...

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Using R — Callling C code with Rcpp

November 12, 2012
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This entry is part 12 of 12 in the series Using RIn two previous posts we described how R can call C code with .C() and the more complex yet more robust option of calling C code with .Call().  Here …   read more ...

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Using R — .Call(“hello”)

November 9, 2012
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This entry is part 10 of 12 in the series Using RIn an introductory post on R APIs to C code, Calling C Code ‘Hello World!’, we explored the .C() function with some ‘Hello World!’ baby steps.  In this post …   read more ...

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