1659 search results for "ggplot2"

The housing bubble by city

March 17, 2011
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The housing bubble by city

The housing bubble by city. Miami sailed high and fell far. Detroit rose modestly and but dropped more than it went up. Dallas held steady. DC is enjoying a bit of renewed growth, but are in and New York yet to fall?

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Global Migration Maps

March 17, 2011
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Global Migration Maps

 Migrations of people have existed for millennia and oc

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sab-R-metrics: Brief Sidetrack for Scatterplot Matrices

March 16, 2011
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sab-R-metrics: Brief Sidetrack for Scatterplot Matrices

In my last two posts I talked about Ordinary Least Squares, then extended this discussion to the multiple predictor case and briefly talked about some of the problems that may arise. These problems can include omitted variable bias, heteroskedasticity, non-normality, and multicollinearity. Most of these problems are relatively minor in practice and have easy fixes,...

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sab-R-metrics: Brief Sidetrack for Scatterplot Matrices

March 16, 2011
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sab-R-metrics: Brief Sidetrack for Scatterplot Matrices

In my last two posts I talked about Ordinary Least Squares, then extended this discussion to the multiple predictor case and briefly talked about some of the problems that may arise. These problems can include omitted variable bias, heteroskedasticity, non-normality, and multicollinearity. Most of these problems are relatively minor in practice and have easy fixes,...

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Visualizing Growth of a Retail Chain

March 15, 2011
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Visualizing Growth of a Retail Chain

I am a regular reader of the FlowingData blog by Nathan Yau. It is an excellent reference for anyone interested in statistical visualization of data. One of his posts that caught my attention was a visualization of the growth of Walmart in the US. Given my research interests in retail, it was a fascinating insight

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More pi plus 1 (or plus 0.01) day fun

March 15, 2011
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More pi plus 1 (or plus 0.01) day fun

Since I just didn’t get enough this morning, I spent some more time fooling around with estimating pi. Since I was basically counting the number of random x,y pairs inside a quarter circle and computing a sample average for more … Continue reading →

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RStudio: My thoughts

March 15, 2011
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RStudio: My thoughts

Let me get this out of the way: I just love RStudio.Created by a team lead by JJ Allaire, a name that should ring a bell if you were involved in web development during the Clinton administration, RStudio is an R IDE that is actually designed for R from...

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RStudio: My thoughts

March 15, 2011
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RStudio: My thoughts

Let me get this out of the way: I just love RStudio.Created by a team lead by JJ Allaire, a name that should ring a bell if you were involved in web development during the Clinton administration, RStudio is an R IDE that is actually designed for R from...

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Parallel computation [revised]

March 14, 2011
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Parallel computation [revised]

We have now completed our revision of the parallel computation paper and hope to send it to JCGS within a few days. As seen on the arXiv version, and given the very positive reviews we received, the changes are minor, mostly focusing on the explanation of the principle and on the argument that it comes

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Language used by Academics with the Protection of Anonymity

March 14, 2011
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Language used by Academics with the Protection of Anonymity

Those in the political science discipline probably remember their first encounter with poliscijobrumors.com. For those outside, you have probably never heard of this particular message board, and you would have no reason to. As the URL suggests, the board specializes in rumor, gossip, back-bitting, mudslinging, and the occasional lucid thread on the political science

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