2011 search results for "ggplot"

Congressional ideology by state

October 25, 2012
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Congressional ideology by state

In a recent post, I illustrated how to add a background geom to your ggplot. While that code worked, and the plot looked fine, it was pointed out to me that I was missing an important aspect of plot layering with ggplot2. Namely, it is not, as I previ...

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Plotting the debate "Winner"

October 24, 2012
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Plotting the debate "Winner"

As a Political Scientist, it could not be more gauche to talk about the Presidential debate in terms of a winner and a loser, but the occasion provides the opportunity to show how to do (at least) three really useful things: Directly load price and v...

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RStudio training

October 23, 2012
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RStudio training

At RStudio, we want you to be effective R users. As well as creating great software, we want to make it easier for you to master R. To this end, we’re very happy to announce our new training offerings. We’re kicking off with two public courses: Effective data visualisation and reports and reproducible research in

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Presidential Debates 2012

October 23, 2012
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Presidential Debates 2012

I have been playing with the beta version of qdap utilizing the presidential debates as a data set. qdap is in a beta phase lacking documentation though I’m getting there. In previous blog posts (presidential debate 1 LINK and VP … Continue reading →

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Distribution of colors by flag

October 22, 2012
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Distribution of colors by flag

A story: We showed you how to use R to assess flag similarity and make a scatter plot of raster images. Dr. Wickham referred us to the set of 2400 flag icons made available by GoSquared, and then (probably jokingly) challenged us to replicate the cool...

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Basics of JavaScript and D3 for R Users

October 21, 2012
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Basics of JavaScript and D3 for R Users

Hadley Wickham, creator of the ggplot2 R package, has been learning JavaScript and its D3 library for the next iteration of ggplot2 (tentatively titled r2d3?)… so I suspect it’s only a matter of time before he pulls the rest of the … Continue reading →

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Carl Morris Symposium on Large-Scale Data Inference (2/3)

October 20, 2012
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Carl Morris Symposium on Large-Scale Data Inference (2/3)

Continuing the summary of last week’s symposium on statistics and data visualization (see part 1 and part 3)… Here I describe Dianne Cook’s discussion of visual inference, and Rob Kass’ talk on statistics in cognitive neuroscience. [Edit: I've added a few … Continue reading →

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The rapidly increasing ideology of the US Republican Party

October 18, 2012
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The rapidly increasing ideology of the US Republican Party

The chart below comes by way of the is.R blog and shows the average ideology of the members of the United State House of Representatives within the Republican (red) and Democratic (blue) parties. (Other parties are shown in green.) The chart is shown as a time series, from the first US congress in 1789, to the most recent full...

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Benchmarking distance calculation in R

October 18, 2012
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Benchmarking distance calculation in R

A typical step in a lot of data mining methods is the calculation of a distance between entities. For example using the nearest-neighbor method it is crucial to do this calculation very efficiently because it is the most time-consuming step of the procedure. Just imagine you want to compute the Euclidean distance between a constantly changing database...

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Faceting as a preferable alternative to 3-D

October 18, 2012
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Faceting as a preferable alternative to 3-D

Sometimes, people want to plot things in three dimensions. Others have spoken more eloquently than I could on the potential problems with plotting multiple two-dimensional relationships in a two-dimensional medium with an artificial three-dimensional ...

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