Posts Tagged ‘ Research ’

Grexit stage left: visualizing the online discussion around Greece’s possible Euro exit

May 24, 2012
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Grexit stage left: visualizing the online discussion around Greece’s possible Euro exit

  While Tsipras and his Syriza coalition have been busy in Greek parliament, the Internet has been a-buzz with speculation that their platform will result in a Greek exit from the Euro currency.  This prospect, affectionately dubbed “Grexit” by Citi… Read more ›

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Charting Twitter time series data with tweet and unique user counts

May 21, 2012
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Let’s say you’ve used my Python script to automate the download of a hashtag or search phrase from Twitter (in a Unicode safe way, unlike within R).  Now let’s say you want to visualize the number of tweets over time.  Easy… Read more ›

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Visualization of Reading Level Frequency by Congressional Bill Stage

April 15, 2012
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Visualization of Reading Level Frequency by Congressional Bill Stage

  Here’s a fun example of how you might use my data on Congressional bill length and complexity.  Imagine you want to understand the empirical distribution of Flesch-Kincaid reading level for Congressional bills and how this distribution is related to … Continue reading →

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Subsetting made easy

February 27, 2012
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Calculating characteristics such as median, mean,… of a subset of data is quite straightforward in R: For a data set containing results from several “models”, a subset for the model “base” is created by Then, the median of the variable … Continue reading →

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Statistics on the length and linguistic complexity of bills

February 13, 2012
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Statistics on the length and linguistic complexity of bills

  Where would you go to find out what the longest bill of the 112th Congress was by number of sections (H. R. 1473)?  How about by number of unique words (H.R. 3671)?  What about by Flesh-Kincaid reading level  (S. … Continue reading →

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Visual Summary of #jan25 Twitter Activity

January 29, 2012
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Visual Summary of #jan25 Twitter Activity

  Last year, I covered a number of the so-called “Twitter protests” in China (#cn220), Iran (#25bahman), and Algeria (#fev12).  Since these protests began in January 2011, the Arab Spring has claimed many members of both ruling and revolting groups … Continue reading →

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Fixed: Unable to plot a decent x-Axis in a time series plot using zoo

June 16, 2011
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Here is the link to the original problem. Briefly, I was unable to plot a custom x-axis showing abbreviated months in a time series plot of a zoo object. In the plot.zoo() function set xaxt = "n" to suppress plotting … Continue reading →

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Boxplots without boxes

June 14, 2011
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Let’s say you have several categories with multiple data points each that you would like to plot as individual points. Even if you have only a single point, the R graphics package will plot a line (without a box for … Continue reading →

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R in a nutshell

June 1, 2011
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R in a nutshell

I got this book as a reference for my work with R and do like it. Just after browsing the chapters I already found some useful hints about loading and manipulating data, e.g., loading of fixed-width data files!

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More fun with boxplots

May 19, 2011
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Here are a few more plotting options for boxplots: Let’s start plotting the full set plot(b$mod, b$x) Plot labels for a subset in full set plot (label all points x < -1) text(subset(b$mod, b$x < -1), subset(b$x, b$x < -1), … Continue reading →

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