3226 search results for "MAP"

Approximate Bayesian model choice

March 16, 2014
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Approximate Bayesian model choice

The above is the running head of the arXived paper with full title “Implications of  uniformly distributed, empirically informed priors for phylogeographical model selection: A reply to Hickerson et al.” by Oaks, Linkem and Sukuraman. That I (again) read in the plane to Montréal (third one in this series!, and last because I also watched

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Moving the North Pole to the Equator

March 15, 2014
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Moving the North Pole to the Equator

I am still working with @3wen on visualizations of the North Pole. So far, it was not that difficult to generate maps, but we started to have problems with the ice region in the Arctic. More precisely, it was complicated to compute the area of this region (even if we can easily get a shapefile). Consider the globe, worldmap <- ggplot()...

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A brief introduction to higher order functions in R

March 14, 2014
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In R, function may not be as special as it is in other programming languages; it is regarded as one of the many types and can be passed as an argument to some other function. The way we deal with other objects such list and data.frame definitely applies to function. Here is a simple example in which we define...

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A brief introduction to higher order functions in R

March 14, 2014
By

In R, function may not be as special as it is in other programming languages; it is regarded as one of the many types and can be passed as an argument to some other function. The way we deal with other objects such list and data.frame definitely applies to function. Here is a simple example in which we define...

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Rcpp 0.11.1

March 14, 2014
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A new minor release 0.11.1 of Rcpp is now on the CRAN network for GNU R; binaries for Debian have also been uploaded. The release fixes a number of bugs that have come up since the 0.11.0 release in January, but also brings some extensions. See t...

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Aggregation of point data to polygons MKII – US states

March 14, 2014
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Aggregation of point data to polygons MKII – US states

After a colleague of mine requested an illustration of the aggregation technique that was part of an introduction to spatial data in R, I decided to revisit aggregation. The first article I posted here on the subject used data from London; this one is slightly different, using Twitter data aggregated to the state level in the USA. All example code...

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Aggregation of point data to polygons MKII – US states

March 14, 2014
By
Aggregation of point data to polygons MKII – US states

After a colleague of mine requested an illustration of the aggregation technique that was part of an introduction to spatial data in R, I decided to revisit aggregation. The first article I posted here on the subject used data from London; this one is slightly different, using Twitter data aggregated to the state level in the USA. All example code...

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Bayesian Search Models

March 13, 2014
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Bayesian Search Models

Bayesian Search Theory The US had a pretty big problem on their hands in 1966. Two planes had hit each other during a in-flight refueling and crashed. Normally, this would be an unfortunate thing and terrible for the families of those involved in the crash but otherwise fairly limited...

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Text Mining Gun Deaths Data

March 13, 2014
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Text Mining Gun Deaths Data

In this post I will explore public data being collected by Slate.  I previously released code using a much early set of this data demonstrating how to turn this data into an animated map.This data began collection as a public response to the horri...

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Web Scraping: working with APIs

March 12, 2014
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APIs present researchers with a diverse set of data sources through a standardised access mechanism: send a pasted together HTTP request, receive JSON or XML in return. Today we tap into a range of APIs to get comfortable sending queries and processing...

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