3857 search results for "GIS"

A few gotchas with R date-time classes

September 21, 2013
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Date and time handling is essential to many modelling and analysis exercises, in R and other languages used for scientific computing. Over the past few months I tackled the mapping of date-time concepts between R and the .NET framework as part of the w...

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Guns are cool

September 21, 2013
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Guns are cool

Reddit has a subreddit Guns are cool which in turn contains the MASS SHOOTINGS IN 2013 page. I pulled those data to see if there was anything of interest to plot or examine. I ended with modelling the frequency of shootings (once a day, Poisson distribution), and number of victims per shootings, a mixture of distributions, 2% of shootings...

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Creating your personal, portable R code library with GitHub

September 21, 2013
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Creating your personal, portable R code library with GitHub

As I discussed in a previous post, I have a few helper functions I’ve created that I commonly use in my work. Until recently, I manually included these functions at the start of my R scripts by either the tried and true copy-and-paste method, or by extracting them from a local file with the <code>source()</code> The post Creating...

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Calling R functions through AJAX using opencpu.js

September 21, 2013
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Calling R functions through AJAX using opencpu.js

The opencpu.js library builds on jQuery to call R functions through AJAX, straight from the browser. This makes it easy to embed R based computation or graphics in apps. Moreover, asynchronous requests (which are native in Javascript) make parallelization a natural part of the application. This post introduces some of...

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Calling R functions through AJAX using opencpu.js

September 21, 2013
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Calling R functions through AJAX using opencpu.js

The opencpu.js library builds on jQuery to call R functions through AJAX, straight from the browser. This makes it easy to embed R based computation or graphics in apps. Moreover, asynchronous requests (which are native in Javascript) make parallelization a natural part of the application. This post introduces some of...

Read more »

Network visualization – part 4: 3D networks

September 20, 2013
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Network visualization – part 4: 3D networks

In the fourth and final part of my graph visualization series, I’ll show how to create 3D network plots. 3D plots are more than just pretty plots – they allow you to rotate, scale, and zoom in and out of … Continue reading →

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Network visualization – part 4: 3D networks

September 20, 2013
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Network visualization – part 4: 3D networks

In the fourth and final part of my graph visualization series, I’ll show how to create 3D network plots. 3D plots are more than just pretty plots – they allow you to rotate, scale, and zoom in and out of … Continue reading →

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Hortonworks Hadoop, Big Data and Data Science

September 20, 2013
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Over at the Hortonworks blog, I've shared some resources for getting started with Data Science and R. And if you'd like to learn more about how Hadoop and R fit into the modern data artchitecture, I'll be participating in a joint webinar with Hortonworks' John Kreisa. If you'd like to join, register at the link below. The Modern Data...

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R, GeoJSON and GitHub

September 20, 2013
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R, GeoJSON and GitHub

GeoJSON is an open computer file format for encoding collections of simple geographical features along with their non-spatial attributes using …Continuar leyendo »

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Webcast on Writing Great R Code

September 19, 2013
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Webcast on Writing Great R Code

While I’m promoting things, you might also want to know that I’m doing a webcast on how to write great R code next Wednesday. It’s at 6pm British Summer Time or 10am Pacific Daylight Time. the big problem with being a data scientist is that you have to be a statistician and a programmer, which

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