3795 search results for "gis"

Bank of America uses R for reporting

June 23, 2014
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A recent FastCoLabs article, "The 9 Best Languages For Crunching Data", starts its list with the R language: It would be downright negligent to start this list with any language other than R. It has been kicking around since 1997 as a free alternative to pricey statistical software, such as Matlab or SAS. But over the past few years,...

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Coloring the world – Extracting user specific color palettes from Tableau Workbooks

June 22, 2014
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Coloring the world – Extracting user specific color palettes from Tableau Workbooks

If you read some of my last blog post you may notice that R got a new companion called Tableau. Tableau is an easy to use and mighty BI toolbox for visualizing all kinds of data and I suggest everybody to give it a trial. One of the things that I like very much is that it gives...

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Multilevel modeling of community composition with imperfect detection

June 19, 2014
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Multilevel modeling of community composition with imperfect detection

This is a guest post generously provided by Joe Mihaljevic. A common goal of community ecology is to understand how and why species composition shifts across space. Common techniques to determine which environmental covariates might lead to such shifts typically rely on ordination of community data to reduce the amount of data. These techniques include redundancy analysis (RDA), canonical...

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Multilevel modeling of community composition with imperfect detection

June 19, 2014
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Multilevel modeling of community composition with imperfect detection

This is a guest post generously provided by Joe Mihaljevic. A common goal of community ecology is to understand how and why species composition shifts across space. Common techniques to determine which environmental covariates might lead to such shifts typically rely on ordination of community data to reduce the amount of data. These techniques include redundancy analysis (RDA), canonical...

Read more »

Upcoming R Training Course in Boston

June 18, 2014
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Upcoming R Training Course in Boston

R for Software Developers and Data Analysts Saturday June 28, 2014 9:00am-4:00pm Microsoft NERD, Cambridge, MA I’ll be presenting a one day professional development workshop on R programming for software developers and data scientists, sponsored by the Greater Boston Chapter of … Continue reading →

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The RoughSets R Package (free webinar)

June 18, 2014
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The RoughSets R Package (free webinar)

Ray DiGiacomo, President of The Orange County R User Group (OC-RUG) in Southern California, contacted us to spread the word about the free webinar they will host on the new “RoughSets” package. RoughSets package This free webinar will provide an introduction to the “RoughSets” package, which provides comprehensive implementations of rough set theory (RST) and

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PITFALL: Did you really mean to use matrix(nrow, ncol)?

June 17, 2014
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PITFALL: Did you really mean to use matrix(nrow, ncol)?

Are you a good R citizen and preallocates your matrices? If you are allocating a numeric matrix in one of the following two ways, then you are doing it the wrong way!x <- matrix(nrow=500, ncol=100)orx <- matrix(NA, nrow=500, ncol=100)Why? Becau...

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Studying Ted Talks, Anscombe’s Quartet, and Modern Languages Enrollment

June 17, 2014
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While the feed from a newer github/jekyll blogging platform (patilv.github.io) is registered with blog aggregators, here are snippets of three posts that were recently published at the new site. Please click on the titles to visit the corresponding page. 1. Frequent Speakers at Ted and Word Cloud of Talk Titles A recent article in openculture.com by Dan Colman mentioned...

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3 new R jobs (for June 16th 2014)

June 16, 2014
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r_jobs

This is the bimonthly R Jobs post (for 2014-06-16), based on the R-bloggers’ sister website: R-users.com. If you are an employer who is looking to hire people from the R community, please visit this link to post a new R job (it’s free, and registration takes less than 10 seconds). If you are a job seekers, please follow the links below to learn more and apply for your job of interest (or visit previous...

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Simultaneous confidence intervals for derivatives of splines in GAMs

June 16, 2014
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Simultaneous confidence intervals for derivatives of splines in GAMs

Last time out I looked at one of the complications of time series modelling with smoothers; you have a non-linear trend which may be statistically significant but it may not be increasing or decreasing everywhere. How do we identify where in the series the data are changing? In that post I explained how we can use the first...

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