1210 search results for "MAPS"

Stay on track: Plotting GPS tracks with R

September 18, 2014
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Stay on track: Plotting GPS tracks with R

Many GPS devices and apps have the capability to track your current position via GPS. If you go walking, running, cycling, flying or driving, you can take a look at your exact route and your average speed.Some of these devices or apps also allow you to...

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The Traveling Salesman with Simulated Annealing, R, and Shiny

September 17, 2014
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The Traveling Salesman with Simulated Annealing, R, and Shiny

I built an interactive Shiny application that uses simulated annealing to solve the famous traveling salesman problem. You can play around with it to create and solve your own tours at the bottom of this post. Here's an animation of the annealing process finding the shortest path through the 48 state capitals of the contiguous...

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Mortality Rate of Children Under 5 and Gender Differences

September 16, 2014
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This post displays two animated choropleths. One for global mortality rates for children under 5 (per 1000 live births) and the second for the difference in global mortality rates for males and female children under 5 (per 1000). This was put together after my wife sent a link to this optimistic story on NPR’s site. It was regarding...

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Using great circles and ggplot2 to map arrival/departure of 2014 US Open Tennis Players

September 16, 2014
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Using great circles and ggplot2 to map arrival/departure of 2014 US Open Tennis Players

This was one of the few visualizations I worked on during the 2014 US Open Tennis Championships. Thanks to Alex Bresler and Aragorn Technologies for the data and opportunity to work with a great group of people. In this one, we’ll take a look at player’s countries, particularly the potential flight paths to and from New York...

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Creating a map showing land covered by rising sea levels

September 15, 2014
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I joined the Geekli.st climate Hackathon this weekend at the Hub Westminster (my favorite venue for Hackathons). While the organizers had lots of enthusiasm they had very little in the way of data for us to work on. No problem, ever since the Flood-relief hackathon I have wanted to use the SRTM ‘whole Earth’ elevation

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Mapping every IPv4 address

September 15, 2014
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Mapping every IPv4 address

During July I was working with a commercial data source that provides extra data around IP addresses and it dawned on me: rather than pinging billions of IP addresses and creating map, I could create a map from all the geolocation data I had at my finger tips. At a high level I could answer “Where are all the IPv4 addresses worldwide?” But in...

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PCA / EOF for data with missing values – a comparison of accuracy

September 15, 2014
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PCA / EOF for data with missing values – a comparison of accuracy

Not all Principal Component Analysis (PCA) (also called Empirical Orthogonal Function analysis, EOF) approaches are equal when it comes to dealing with a data field that contain missing values (i.e. "gappy"). The following post compares several methods by assessing the accuracy of the derived PCs to reconstruct the "true" data set, as was similarly...

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Next Kölner R User Meeting: Friday, 12 September 2014

September 9, 2014
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Next Kölner R User Meeting: Friday, 12 September 2014

The next Cologne R user group meeting is scheduled for this Friday, 12 September 2014.We have a great agenda with international speakers: Maarten-Jan Kallen: Introduction to Renjin, the R interpreter for the JVM Jonathan Cornelissen, Martijn Theuwissen: DataCamp - An online interactive learning platform for R The event will be followed by drinks and schnitzel...

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ASDAR book Review

September 8, 2014
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ASDAR book Review

I was recently invited to write a book review for Applied Spatial Analysis and Policy (ASAP). The book, I conclude, “is the authoritative resource on R’s spatial capabilities” and should be of interest to many R users. Below is a preprint of the full review, now published on ASAP’s website. As a geographer and heavy R user,...

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Transport Map Book

September 8, 2014
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Transport Map Book

The Transport Map Books are available for each local authority district in England and present a series of maps related to commuting behaviour. The data are derived from multiple sources including: the 2011 Census, Department for Transport estimates and the results of a research project looking at carbon dioxide emissions linked to the...

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