3140 search results for "GIS"

Intro R training from RStudio: NYC May 13-14, SF May 20-21 (and discounts)

April 17, 2013
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At RStudio, we’re hosting our Introduction to R Workshop this May in two locations. As an R-help subscriber, we’re offering 10% off! Intro to data science with R (http://goo.gl/bplg3)   May 13-14 New York City Intro to data science with R (http://goo.gl/VCUFL)  May 20-21 San Francisco Bay Area What will you learn? Practical skills for visualizing, transforming, and modeling data in R....

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Interview with a forced convert from Matlab to R

April 17, 2013
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Interview with a forced convert from Matlab to R

Here is an interview with Ron Hochreiter, Assistant Professor at WU Vienna University Economics and Business. In 25 words or less tell us what you do (using German words is cheating). I consider myself as a data scientist (teaching and research) with roots in Mathematical Programming, i.e. Optimization under Uncertainty (Stochastic Programming). You were an The post Interview...

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Reinhart & Rogoff: Everyone makes coding mistakes, we need to make it easy to find them + Graphing uncertainty

April 17, 2013
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Reinhart & Rogoff: Everyone makes coding mistakes, we need to make it easy to find them + Graphing uncertainty

You may have already seen a lot written on the replication of Reinhart & Rogoff’s (R &amp R) much cited 2010 paper done by Herndon, Ash, and Pollin. If you haven’t, here is a round up of some of some of what has been written: Konczal, Yglesias, Krugman, Cowen, Peng,

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R Color Reference Sheet

April 16, 2013
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R Color Reference Sheet

R has a built-in collection of 657 colors that you can use in plotting functions by using color names. There are also various facilities to select color sequences more systematically: Color palettes and ramps available in packages RColorBrewer and colorRamps. R base functions colorRamp and colorRampPalette that you can use to create your own color

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UseR! 2013 website at user2013.org

April 16, 2013
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For reasons beyond my understanding, the user 2013 committee didn’t register a domain name for the website, and the official address of the conference is: http://161.67.142.97/congresos/useR-2013/. Not only is this impossible to remember for humans, but it won’t show up in search engines. So I decided to help them out and invest 8 euro to ...

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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #5)

April 15, 2013
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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #5)

More exciting news about MCMSki IV! First thing first, the 16 contributed sessions are now all-set, having gotten the stamp of approval from the scientific committee! Thanks to everyone who submitted a session proposal. (There were so many proposals that we alas had to reject some, as well as every single talk proposal… Sorry people:

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Unshorten URLs in R

April 15, 2013
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Well, of course, this tip comes out one week after I needed it. The author uses the RCurl package to request the header of the shortened URL and then parse the "location" parameter on the return. This sort of operation tends to be needed frequently, es...

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Mapping the GDELT data (and some Russian protests, too)

April 15, 2013
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Mapping the GDELT data (and some Russian protests, too)

(This article was first published on Quantifying Memory, and kindly contributed to R-bloggers) In this post I show how to select relevant bits of the GDELT data in R and present some introductory ideas about how to visualise it as a network map. I've included all the code used to generate the illustrations. Because of this, if you here...

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Predicting Dichotomous Outcomes I

April 14, 2013
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Predicting Dichotomous Outcomes I

We are trying to predict a dependent dichotomous variable (male/female, yes/no, like/dislike,etc) with independent “predictor” variables. Let’s say we want to determine whether or not an employee will quit based on the percentage of their tenure spent traveling. We assemble the data from HR and erroneously employ simple linear regression to model the relationship, a

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Using R — Working with Geospatial Data

April 14, 2013
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Using R — Working with Geospatial Data

This entry is part 6 of 12 in the series Using RGIS, an acronym that brings joy to some and strikes fear in the heart of those not interested in buying expensive software. Luckily fight or flight can be saved for another day because you …   read more ...

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