2593 search results for "Map"

Introducing imagemetrics

September 25, 2013
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Introducing imagemetrics

References In my recent projects, I had the opportunity to work with the professor Raphaël Proulx who introduced me to several metrics commonly used in landscape ecology for quantifying image texture. In order to make my life easier, I decided to implement...

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Working with intraday data

September 24, 2013
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When working with intraday data, analysts are often facing a large dataset problem. R is well equipped to deal with this but the standard approach has to be modified in some ways. Large dataset means different things to different people. I’m talking here about a dataset of less than 10 columns and 2 to 5

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Going to Plot Some Proportions? Why not Flog ’em First?

September 23, 2013
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Going to Plot Some Proportions? Why not Flog ’em First?

Fractions and proportions can be difficult to plot nicely for a number of reasons: If the proportions are based on small counts (e.g., two of his three computing devices were Apple products) then the calculated proportions will only take on a number of discrete values. Depending on what you have measured there might be many proportions close to the...

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Introducing parallelRandomForest: faster, leaner, parallelized

September 23, 2013
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ffffffffffffforst

Together with other members of Andreas Beyer's research group, I participated in the DREAM 8 toxicogenetics challenge. While the jury is still out on the results, I want to introduce my improvement of the R randomForest package, namely parall...

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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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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...

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Are you ready for some Football? (No not soccer)

September 20, 2013
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Are you ready for some Football? (No not soccer)

With two weeks of NFL football under our belts, it is time to start peaking under the proverbial hood at some of the statistics.  What better way than with R?  If you want the best stats out there, I recommend the website http://www.advancedn...

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R and The Journal of Computational and Graphical Statistics

September 20, 2013
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R and The Journal of Computational and Graphical Statistics

by Joseph Rickert I don’t think that most people find reading the articles in the statistical journals to be easy going. In my experience, the going is particularly rough when trying to learn something completely new and I don’t expect it could be any other way. There is no getting around the hard work. However, at least in the...

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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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