2146 search results for "map"

Facebook-class social network analysis with R and Hadoop

May 25, 2012
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Facebook-class social network analysis with R and Hadoop

In computing, social networks are traditionally represented as graphs: a connection of nodes (people), pairs of which may be connected by edges (friend relationships). Visually, the social networks can then be represented like this: Social network analysis often amounts to calculating the statistics on a graph like this: the number of edges (friends) connected to a particular node (person),...

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French dataset: population and GPS coordinates

May 24, 2012
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French dataset: population and GPS coordinates

A short post today based on recent work by @3wen (Ewen Galic, graduate Student in Rennes, spending a year in Montreal). Since we were working on a detailed French dataset (per commune), we needed a dataset containing a list all communes, with popu...

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Slides for R/Finance 2012

May 23, 2012
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Slides for R/Finance 2012

Another succeessful* year of R/Finance is behind us. It was certainly more: a larger crowd, a longer session, more seminars, more presentations, more sponsors – perhaps even to the point where we’ve reaching a certain capacity. What began as an interesting idea among a few friends has more than credible momentum – it’s now more

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Global Fires, the Amazon and Humans

May 23, 2012
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Global Fires, the Amazon and Humans

Fires are natural - most of the time (click on image for larger view). Natural Global Fires Many plants and animals have evolved to depend on fires periodically occurring in certain parts of the world. This phenomenon has been occurring for...

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R-NOLD 2012-05-23 05:48:00

May 23, 2012
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R-NOLD 2012-05-23 05:48:00

Mapping Global Earthquake using XML and MaptoolsEveryday the US Geological Survey (USGS) publish earthquake data (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.html) all over the globe. Using XML and maptool packages of R I d...

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knitr Performance Report–Attempt 3

May 22, 2012
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knitr Performance Report–Attempt 3

please see knitr Performance Report-Attempt 2 and knitr Performance Report-Attempt 1 Since the time of my last reporting post, RStudio, knitr, and Sweave have worked extremely hard to make document creation easier by becoming even more streamlined and ...

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R-NOLD 2012-05-21 04:46:00

May 21, 2012
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R-NOLD 2012-05-21 04:46:00

Mapping Philippines earthquake data from January 2011 to January 2012 collected by PHIVOLCS using R ggplot package.I tried to recreate the earthquake map of the Philippines created using maptool and R plot function using ggplot2. Earthquake map ...

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Another look at over-representation analysis interpretation

May 21, 2012
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Another look at over-representation analysis interpretation

Interpreting a list of differentially regulated genes can take many forms. One of the most widely used method is looking for enrichment of functional group of genes compared to a random sampling of gene from the same universe, namely an over-representation analysis (ORA).The point I want to explore today is what is the best way to interpret the results...

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More Bixi Data Visualization

May 17, 2012
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More Bixi Data Visualization

I mentioned in a previous post that our team at the recent Hack/Reduce hackathon had some fun with a data set which consisted of Bixi station states at minute level temporal resolution. In addition to pulling out and plotting the flux at each station on an hourly basis, we also plotted the system state (number

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Global Homicide Rates by Government Type

May 16, 2012
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Global Homicide Rates by Government Type

Surprising results For purposes of this article, any mention of homicide rates refers to reported homicide rates. Open vs Closed In mostly open countries (full democracies), the homicide rates are rather low when compared to other types of...

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