1645 search results for "ggplot2"

A quick introduction to ggplot2

April 10, 2013
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My friend Jonah asked me to guest lecture in his R seminar aimed at grad students and postdocs in Integrative Biology. I gave Jonah a bunch of topic options ranging from reproducible research with R to data manipulation. The consensus was data visualization so I put together a 2 hour talk/hands on presentation for ggplot2

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R 3.0 released; ggplot2 stat_summary bug fixed!

April 4, 2013
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The new version of R was released yesterday. As I understand it, the numbering change to 3.0 represents the recognition that R had evolved enough to justify a new number rather than the addition of many new features. There are some important new featur...

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Colour it up: my quest to master ggplot2 (part 2)

April 3, 2013
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Data visualization with R and ggplot2

March 28, 2013
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Data visualization with R and ggplot2

I’m working on a one-hour ggplot2 lecture for the San Diego R users group, which I will post here when I’m done. I think there are many great intro to R data visualization resources out there so I’ll only share working examples on my blog. A retail chain client employs a few hundred field agents who perform

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Using R: Correlation heatmap with ggplot2

March 21, 2013
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Using R: Correlation heatmap with ggplot2

Just a short post to celebrate that I learned today how incredibly easy it is to make a heatmap of correlations with ggplot2 (and reshape2, of course). So, what is going on in that short passage? cor makes a correlation matrix with all the pairwise correlations between variables (twice; plus a diagonal of ones). melt

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Learning-by-doing: my quest to master ggplot2 (part 1)

March 19, 2013
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The evolution of EU legislation (graphed with ggplot2 and R)

March 19, 2013
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The evolution of EU legislation (graphed with ggplot2 and R)

During the last half century the European Union has adopted more than 100 000 pieces of legislation. In this presentation I look into the patterns of legislative adoption over time. I tried to create clear and engaging graphs that provide … Continue reading →

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Using maps and ggplot2 to visualize college hockey championships

March 13, 2013
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Using maps and ggplot2 to visualize college hockey championships

Short: I plot the frequency of college hockey championships by state using the maps package, and ggplot2 Note: this example is based heavily on the example provided athttp://www.dataincolour.com/2011/07/maps-with-ggplot2/ data reference:http://en.wikipedia.org/wiki/NCAA_Men%27s_Ice_Hockey_Championship Question of interestAs a good Minnesotan, I've believed for quite some time that the colder, Northern states enjoy a competitive advantage when it...

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R/ggplot2 tip: aes_string

February 25, 2013
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R/ggplot2 tip: aes_string

I’m a big fan of ggplot2. Recently, I ran into a situation which called for a useful feature that I had not used previously: aes_string. Imagine that you have data consisting of observations for several variables – let’s say A, B, C – where each observation is from one of two groups – call them

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Pareto plot with ggplot2

February 23, 2013
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A Pareto chart, named after Vilfredo Pareto, is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line (quoted from Wikipedia). ...

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