2774 search results for "GIS"

Resolving species names when you have a lot of them

January 25, 2013
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taxize use case: Resolving species names when you have a lot of them Species names can be a pain in the ass, especially if you are an ecologist. We ecologists aren't trained in taxonomy, yet we often end up with huge species lists. Of course we want to correct any spelling errors in the names, and get the newest...

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Time series cross-validation 5

January 24, 2013
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Time series cross-validation 5

The caret package for R now supports time series cross-validation!  (Look for version 5.15-052 in the news file).  You can use the createTimeSlices function to do time-series cross-validation with a fixed window, as well as a growin...

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Storing a Function in a Separate File in R

January 24, 2013
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If you're going to be using a function across several different R files, you might want to store the function in its own file.If you want to name the function in its own fileThis is probably the best option in general, if only because you may want to p...

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Shiny, deSolve and ggplot play nicely together

January 24, 2013
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Shiny, deSolve and ggplot play nicely together

This is just a quick post (after a long absence) to quickly share my first Shiny attempt. The aim is to make available mechanistic models to coworkers through a web-based interface. I had planned to use RApache and RGTK+, but the arrival of Shiny has ...

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Maps in R: choropleth maps

January 23, 2013
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Maps in R: choropleth maps

This is the third article of the Maps in R series. After having shown how to draw a map without placing data on it and how to plot point data on a map, in this installment the creation of a … Continue reading →

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Revolution Newsletter: January 2013

January 23, 2013
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The most recent edition of the Revolution Newsletter is out. The news section is below, and you can read the full January edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Top Innovator, Big Data Technologies. Revolution Analytics is the proud recipient of the Top...

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Going Beyond Florence Nightingale’s Data Diagram: Did Flo Blow It with Wedges?

January 23, 2013
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Going Beyond Florence Nightingale’s Data Diagram: Did Flo Blow It with Wedges?

In 2010, I wrote a short blog item about Florence Nightingale the statistician, solely because of its novelty value. I didn't even bother to look closely at the associated graphic she designed, but that's what I intend to do here. In this first installment, I reflect on her famous data visualization by reconstructing it...

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Statisticians and computer scientists – if there is no code, there is no paper

January 23, 2013
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I think it has been beat to death that the incentives in academia lean heavily toward producing papers and less toward producing/maintaining software. There are people that are way, way more knowledgeable than me about building and maintaining software. For … Continue reading →

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Create HTML page containing all package examples using knitr and markdown

January 23, 2013
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Create HTML page containing all package examples using knitr and markdown body, td { font-family: sans-serif; background-color: white; font-size: 12px; margin: 8px; } tt, code, pre { font-family: 'DejaVu Sans Mono', 'Droid San...

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A beginner’s guide to sharing and collaboration with R

January 22, 2013
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In today's social world, it's important to be able to collaborate with others online when working with data, and to be able to easily share your outputs online. Fortunately, the R language and the broad R community provides a number of facilities for collaboration and sharing, which are summarized in Noam Ross's guide to tools for collaboration with R....

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