1787 search results for "Ggplot2"

What are the most popular bike routes in London?

February 7, 2012
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What are the most popular bike routes in London?

James Cheshire, R user and lecturer at the UCL Centre for Advanced Spatial Analysis, created this map of the most trafficked cycle routes in London: Click to enlarge, it's a gorgeous chart. The bicycle traffic data comes from London's public cycle-hire facility, which currently is only available in central London (which is why you don't see much activity in...

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The anatomy of a Twitter conversation, visualized with R

February 6, 2012
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The anatomy of a Twitter conversation, visualized with R

If you're a Twitter user like me, you're probably familiar with the way that conversations can easily by tracked by following the #hashtag that participants include in the tweets to label the topic. But what causes some topics to take off, and others to die on the vine? Does the use of retweets (copying another users tweet to your...

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Visualising Activity Around a Twitter Hashtag or Search Term Using R

February 6, 2012
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Visualising Activity Around a Twitter Hashtag or Search Term Using R

I think one of valid criticisms around a lot of the visualisations I post here and on my various #f1datajunkie blogs is that I often don’t post any explanatory context around the visualisations. This is partly a result of the way I use my blog posts in a selfish way to document the evolution of

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Japan Quake Map 2010-2011

February 2, 2012
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Japan Quake Map 2010-2011

1 Introduction “The 3.11 Tohoku Earthquake in Japan”, It did serious damage to Japan. I have attempted gaining

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R Chart featured in Facebook IPO

February 2, 2012
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R Chart featured in Facebook IPO

Page 7 of Facebook's 213-page S-1 filing for their record-breaking IPO includes the following chart, under the headline: "Our Mission: To make the world more open and connected". This chart was created using the R language and Hadoop by Facebook intern Paul Butler. (Thanks to the blog IOER Tools for first noticing the inclusion of the chart.) And speaking...

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Vectorized R vs Rcpp

February 1, 2012
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Vectorized R vs Rcpp

In my previous post, I tried to show, that Rcpp is 1000 faster than pure R and that generated the fuss in the comments. Being lazy, I didn’t vectorize R code and at the end I was comparing apples vs oranges. To fix that problem, I built a new script, where I’m trying to compare

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MINE: Maximal Information-based NonParametric Exploration

February 1, 2012
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MINE: Maximal Information-based NonParametric Exploration

There was a lot of buzz in the blogosphere as well as the science community about a new family of algorithms that are able to find non-linear relationships over extremely large fields of data. What makes it particularly useful is that the measure(s) it...

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Given a room with n people in it, what is the probability any two will have the same birthday?

January 31, 2012
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Given a room with n people in it, what is the probability any two will have the same birthday?

Revisiting a fun puzzle I remember first encountering as an undergraduate. Nice example of creating a plot in R using ggplot2. I also plot the probability of someone in the room having the same birthday as you.

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Given a room with n people in it, what is the probability any two will have the same birthday?

January 31, 2012
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Given a room with n people in it, what is the probability any two will have the same birthday?

Revisiting a fun puzzle I remember first encountering as an undergraduate. Nice example of creating a plot in R using ggplot2. I also plot the probability of someone in the room having the same birthday as you. ## See http://en.wikipedia.org/wiki/Bi...

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Given a room with n people in it, what is the probability any two will have the same birthday?

January 31, 2012
By
Given a room with n people in it, what is the probability any two will have the same birthday?

Revisiting a fun puzzle I remember first encountering as an undergraduate. Nice example of creating a plot in R using ggplot2. I also plot the probability of someone in the room having the same birthday as you. ## See http://en.wikipedia.org/wiki/Bi...

Read more »