2151 search results for "map"

John Snow’s famous cholera analysis data in modern GIS formats

January 6, 2012
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John Snow’s famous cholera analysis data in modern GIS formats

In 1854 there was a massive cholera outbreak in Soho, London – in three days over 120 people died from the disease. Famously, John Snow plotted the locations of the deaths on a map and found they clustered around a pump in Broad Street – he suggested that the pump be taken out of service

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Scraping R-bloggers with Python – Part 2

January 5, 2012
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In my previous post I showed how to write a small simple python script to download the pages of R-bloggers.com. If you followed that post and ran the script, you should have a folder on your hard drive with 2409 .html files labeled post1.html , post2....

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Coat of arms of Poland challenge

January 5, 2012
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Coat of arms of Poland challenge

Last week I have experimented with coloring map of Poland in national colors. Vaidotas Zemlys improved on my effort by adding colors to map of Lithuania and posted a challenge to also add coat of arms to the plot. This proved to be a nice exe...

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Good at applying R? Be a Sales Engineer!

January 5, 2012
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Revolution Analytics is hiring! We're looking for a Sales Engineer -- someone who can show Revolution R to potential customers and really show off what R can do in an applied setting. (Fun fact: this was my first job when I left university, and it's a lot of fun.) The job description is below, please pass it along to...

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Revolution Analytics named Startup to Watch in 2012

January 4, 2012
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While we were out over the holiday break, Silicon Angle selected five open-source startups that are commercializing and contributing to open source projects as "Startups to Watch in 2012". Revolution Analytics was #2 on the list: This was a busy year for Revolution. The company released Revolution R 5.0, which included Hadoop integration, allowing users to create map/reduce jobs...

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Plotting earthquake data

January 2, 2012
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Plotting earthquake data

Since 4th September 2010 we have had over 2,800 quakes (considering only magnitude 3+) in Christchurch. Quakes come in swarms, with one or few strong shocks, followed by numerous smaller ones and then the ocasional shock, creating an interesting data … Continue reading →

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Top 20 R posts of 2011 (and some R-bloggers statistics)

January 1, 2012
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Top 20 R posts of 2011 (and some R-bloggers statistics)

R-bloggers.com is now two years young. The site is an (unofficial) online R journal written by bloggers who agreed to contribute their R articles to the site. In this post I wish to celebrate R-bloggers’ second birthmounth by sharing with you: Links to the top 20 posts of 2011 Statistics on “how well” R-bloggers did Read more...

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You’ve got the whole world in your portfolio

December 29, 2011
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You’ve got the whole world in your portfolio

A famous finance professor once told us that good diversification meant holding everything in the world. Fine, but in what proportion? Suppose you could invest in every country in the world. How much would you invest in each? In a market-capitalization weighted index, you'd invest in each country in proportion to the market value of its investments (its "market capitalization")....

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Benchmarking time series models

December 29, 2011
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Benchmarking time series models

This is a quick post on the importance of benchmarking time-series forecasts.  First we need to reload the functions from my last few posts on times-series cross-validation.  (I copied the relevant code at the bottom of this post so you don't...

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dcemriS4 0.46

December 29, 2011
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dcemriS4 0.46

The R package dcemriS4 provides routines for the quantitative analysis of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), along with quantification of diffusion-weighted MRI (ADC = apparent diffusion coefficient) and quantitative T2 map...

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