2174 search results for "map"

Meticulously recreating bitmap plots in R

February 3, 2014
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Meticulously recreating bitmap plots in R

There’s a hard-fought drive on Wikimedia commons to convert those images that should be in vector format (i.e. graphs, diagrams) from their current bitmap form. At the time of writing, the relevant category has over 7000 images in the category … Continue reading →

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Self-Organising Maps for Customer Segmentation using R

February 3, 2014
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Self-Organising Maps for Customer Segmentation using R

Self-Organising Maps (SOMs) are an unsupervised data visualisation technique that can be used to visualise high-dimensional data sets in lower (typically 2) dimensional representations. In this post, we examine the use of R to create a SOM for customer segmentation. The figures shown here used use the 2011 Irish Census information for the greater Dublin

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Mapping the taste profile of Scottish whishkeys

January 26, 2014
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Mapping the taste profile of Scottish whishkeys

Recently, I came across this interesting blog post http://blog.revolutionanalytics.com/2013/12/k-means-clustering-86-single-malt-scotch-whiskies.html by the Revolutions blog poster Luba Gloukhov. This post initially caught my attention because of the originality of the dataset: 86 scottish whiskeys marked on a scale of 0-4 in 12 different taste profile (source data is here). Now I know what I like, and I like my

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CrimeMap, LondonR and a Book Review

January 22, 2014
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CrimeMap, LondonR and a Book Review

In preparation for my LondonR talk in March, I am polishing up my CrimeMap (see previous blog post here and here) in my spare time. Thanks to Chris Beeley and Packt, I won a free e-copy of Chris Beeley’s book following his great talk about...

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Easy data maps with R: the choroplethr package

January 21, 2014
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Easy data maps with R: the choroplethr package

Choropleth maps are a popular way of representing spatial or geographic data, where a statistic of interest (say, income, voting results or crime rate) are color-coded by region. R includes all of the necessary tools for creating choropleth maps, but Trulia's Ari Lamstein has made the process even easier with the new choroplethr package now available on github. With...

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Metaphors Matter: Factor Structure vs. Correlation Network Maps

January 17, 2014
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Metaphors Matter: Factor Structure vs. Correlation Network Maps

The psych R package includes a data set called "bfi" with self-report ratings on 25 personality items along a 6-point agreement scale. All the details are provided in the documentation accompanying the package. My focus is how to represent the correlat...

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Quilt plots. Like heat maps, only…heat maps

January 15, 2014
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Quilt plots. Like heat maps, only…heat maps

Stephen tweets: Quilt Plots: A Simple Tool for the #Visualisation of Large Epidemiological Data buff.ly/1doSx4X— Stephen Rudd (@SAGRudd) January 15, 2014 Quilt plots. Sounds interesting. The link points to a short article in PLoS ONE, containing a table and a figure. Here is Figure 1. If you looked at that and thought “Hey, that’s a

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Google Maps and ggmap

December 22, 2013
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Google Maps and ggmap

The ggmap package can be used to access maps from the Google Maps API and there are a number of examples on various statistics related blogs. These include here, here and here. The ggmap package has a function get_map that can download maps from various sources including Google Maps. require(ggmap) The first example specifies the

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Contour and Density Layers with ggmap

December 13, 2013
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Contour and Density Layers with ggmap

I am busy working on a project which uses data from the World Wide Lightning Location Network (WWLLN). Specifically, I am trying to reproduce some of the results from Orville, Richard E, Gary R. Huffines, John Nielsen-Gammon, Renyi Zhang, Brandon Ely, Scott Steiger, Stephen Phillips, Steve Allen, and William Read. 2001. “Enhancement of Cloud-to-Ground Lightning

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Introducing CrimeMap – A Web App Powered by ShinyApps!

November 29, 2013
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Introducing CrimeMap – A Web App Powered by ShinyApps!

A few months ago I did a mini project using open crime data and R to create crime visualisations. At that time, I was already thinking about a web app using Shiny but I couldn't justify the time to develop the app and then set up a server etc. Not unti...

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