2636 search results for "GIS"

Simple example:How to use foreach and doSNOW packages for parallel computation.

February 6, 2011
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update************************************************************************************************ I checked whether this example was run collectly or not in Windows XP(32bit) only !  ************************************************************************************************ In R language, the members at Revolution R provide foreach and doSNOW packages for parallel computation. these packages allow us to compute things in parallel. So, we start to install these packages. install.packages("foreach")install.packages("doSNOW") Created by Pretty R at inside-R.org In...

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Simple example:How to use foreach and doSNOW packages for parallel computation.

February 6, 2011
By

update************************************************************************************************I checked whether this example was run collectly or not in Windows XP(32bit) only ! ************************************************************************************************In R language, the members at Revolution R provide foreach and doSNOW packages for parallel computation. these packages allow us to compute things in parallel. So, we start to install these packages.install.packages("foreach")install.packages("doSNOW")Created by Pretty R at inside-R.orgIn...

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Boxplots and Beyond – Part II: Asymmetry

Boxplots and Beyond – Part II: Asymmetry

In my last post, I discussed boxplots in their simplest forms, illustrating some of the useful options available with the boxplot command in the open-source statistical software package R.  As I noted in that post, the basic boxplot is both useful...

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Clustering NHL Skaters

February 6, 2011
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Clustering NHL Skaters

I have been sitting on this post for some time now and wanted to get it out there.  The goal is to simply show how easy it is to pull live data from the web into R, massage it, and perform some analytics on it.  I am not sure how useful this analysis really is

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Revolution R Enterprise 4.2 now available

February 1, 2011
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Today we're pleased to announce the availability of the latest update to the Revolution R family, Revolution R Enterprise 4.2. This release includes all of the capabilities of the most powerful statistical software available, open-source R (version 2.11.1), plus additional components for big data analysis, integration, user experience and more. Version 4.2 includes a number of new features, including:...

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A gentle introduction to R

January 31, 2011
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A gentle introduction to R

Whenever a post on this blog requires some data analysis and perhaps a chart or two, my tool of choice is the versatile statistical programming package R. Developed as an open-source implementation of an engine for the S programming language, R is therefore free. Since commercial mathematical packages can costs thousands of dollars, this alone

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Null Confusion

January 25, 2011
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Null Confusion

Talking a bit with my friend Jarrod about math stats and econometrics, we both came to the conclusion that the standard presentation for basic inference is lacking. In an intro or intermediate applied statistics course you learn about first and … Continue reading →

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Disable auto-update from R (Windows)

January 21, 2011
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There are two major threats to complex MCMC estimations:Wrong energy settings (hibernate after 2 hours of inactivity)Automatic Updates (install updates at 3 a.m.)I thought about the latter threat. At times, you may hand some R code to other co-workers,...

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Disable auto-update from R (Windows)

January 21, 2011
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There are two major threats to complex MCMC estimations:Wrong energy settings (hibernate after 2 hours of inactivity)Automatic Updates (install updates at 3 a.m.)I thought about the latter threat. At times, you may hand some R code to other co-workers,...

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Submit your talks for the R user conference

January 19, 2011
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useR! 2011, the annual R user conference supported by the R Foundation for Statistical Computing, will be held this year in the United Kingdom at the University of Warwick (which is located, oddly enough, in Coventry). Last year's conference featured dozens of presentations on R's use in pretty much every domain of analysis, science and research. There were talks...

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