3899 search results for "GIS"

4 new R jobs (for September 10th 2014) and a new “about us” video

September 10, 2014
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4 new R jobs (for September 10th 2014) and a new “about us” video

This is the bimonthly R Jobs post (for 2014-09-10), based on the R-bloggers’ sister website: R-users.com. This time, I’d like to start by thanking Jeff Weakley (more on Jeffat the end of this post) for his huge help in producing the following short (1:30 minutes) video about R-users: If you are an employer who is looking to hire people from the R community, please visit this...

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Plotly: Here’s What You Can Do, One Year In

September 10, 2014
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Plotly: Here’s What You Can Do, One Year In

Plotly is now a year old. We wanted to update you on what you can do, and let you know how other folks are using Plotly. For example, NASA scientists and engineers track satellites with Plotly. Google Chrome ships a Plotly Chrome App for high school st...

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Fun with Bordered Cubes

September 9, 2014
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Fun with Bordered Cubes

I am interested in generating 3D reasoning items in R. To this end I have adapted some of the awesome functions built in the rgl library to my ends. My new function is 'cube' and it takes position and automatically sizes itself as a 1x1x1 cube though t...

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Multivariable gradient descent

September 9, 2014
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Multivariable gradient descent

This article is a follow up of the following:Gradient descent algorithm Here below you can find the multivariable, (2 variables version) of the gradient descent algorithm. You could easily add more variables. For sake of simplicity and for making it more intuitive I decided to post the 2 variables case. In fact, it would be quite challenging to...

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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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Transport Map Book

September 8, 2014
By
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...

Read more »

Build a SPAM filter with R

September 8, 2014
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Build a SPAM filter with R

You can find the complete code on github: https://github.com/JulianHill/R-Tutorials/blob/master/spam_class_r.r   Introduction: The topic Machine Learning gets more and more important. The number of data sources grows everyday and it makes it hard to get... The post Build a SPAM filter with R appeared first on ThinkToStart.

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Visualizing Website Pathing With Network Graphs

September 8, 2014
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Last week, version 1.4 of RSiteCatalyst was released, and now it’s possible to get site pathing information directly within R. Now, it’s easy to create impressive looking network graphs from your Adobe Analytics data using RSiteCatalyst and d3Network. In this blog post, I will cover simple and force-directed network graphs, which show the pairwise representation between pages. Related posts:

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An exercise in non-linear modeling

September 7, 2014
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An exercise in non-linear modeling

In my previous post I wrote about the importance of age and why it is a good idea to try avoiding modeling it as a linear variable. In this post I will go through multiple options for (1) modeling non-linear effects in a linear regression setting, (2) benchmark the methods on a real dataset, and (3) look at how...

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