388 search results for "ANIMATION"

Sentiment Analysis of Uganda Presidential Debate – Using R and Twitter data

February 2, 2016
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Introduction to Digital democracy is here. Social media platforms like Facebook and Twitter are providing inexpensive ways for individuals to engage on political issues, therefore providing a wealth of data that provides insight on an underlying trend that spans both geography and demography. Outbox Uganda carried out a sentiment analysis of Uganda’s first ever presidential debate last month and...

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New Yorkers, municipal bikes, and the weather

January 29, 2016
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New Yorkers, municipal bikes, and the weather

Like many modern cities, New York offers a public pick-up/drop-off bicycle service (called Citi Bikes). Subscribing City Bike members can grab a bike from almost 500 stations scattered around the city, hop on and ride to their destination, and drop the bike at a nearby station. (Visitors to the city can also purchase day passes.) The City Bike program...

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Delaware versus Chesapeake revisited

January 26, 2016
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Delaware versus Chesapeake revisited

In this earlier post, I analyzed tidal water surface elevation data from the NOAA PORTS system from both the Delaware Estuary and the Chesapeake Bay, showing how the two systems react very differently to the tidal forcing at their Atlantic Ocean bounda...

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Filling in the gaps – highly granular estimates of income and population for New Zealand from survey data

January 22, 2016
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Filling in the gaps – highly granular estimates of income and population for New Zealand from survey data

Individual-level estimates from survey data I was motivated by web apps like the British Office of National Statistics’ How well do you know your area? and How well does your job pay? to see if I could turn the New Zealand Income Survey into an individual-oriented estimate of income given age group, qualification, occupation, ethnicity, region and hours...

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ggvis tutorial: become a data visualization expert with RStudio

January 14, 2016
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The latest interactive course in the RStudio track is now available on DataCamp: ggvis tutorial. The first part of the tutorial is available for  free, so everyone can now learn interactively how to start creating stunning ggvis data visualizations in R. All courses in the RStudio track are self-paced, and combine challenging interactive...

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A Tale of Twenty-Two Million Citi Bikes: Analyzing the NYC Bike Share System

January 13, 2016
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A Tale of Twenty-Two Million Citi Bikes: Analyzing the NYC Bike Share System

In the conclusion of my post analyzing NYC taxi and Uber trips, I noted that Citi Bike, New York City’s bike share system, also releases public data, totaling 22.2 million rides from July 2013 through November 2015. With the recent news that the Citi Bike system topped 10 million rides in 2015, making it one...

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Visualing High Dimensions as DNA Strands

January 10, 2016
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Visualing High Dimensions as DNA Strands

For a community project, I needed to research which U.S. cities were most similar to mine. The U.S. census has some wonderful data that covers 1,579 statistical areas, using the Office of Management & Budget's definition.With this data, I selected the relevant attributes and then calculated the root mean squared error of the scaled distances from the target city...

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High Flows in Lower Columbia River near Portland, OR

January 9, 2016
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High Flows in Lower Columbia River near Portland, OR

After I completed the animated tidal water surface elevation plots for the Delaware Estuary, I looked for other systems with a good set of tidal observation stations.  The Lower Columbia River near Portland, Oregon fit the bill.  Using the NO...

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Animated 3D Plot of Ammonia Toxics Criteria

January 7, 2016
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Animated 3D Plot of Ammonia Toxics Criteria

In 2013, EPA published final national recommended water quality criteria for the protection of aquatic life from the toxic effects of ammonia in freshwater.http://www.epa.gov/wqc/aquatic-life-criteria-ammoniaThese criteria are a function of water ...

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Color Quantization in R

January 3, 2016
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Color Quantization in R

In this post, we'll look at a simple method to identify segments of an image based on RGB color values. The segmentation technique we'll consider is called color quantization. Not surprisingly, this topic lends itself naturally to visualization and R makes it easy to render some really cool graphics for the color quantization problem. ...

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