Posts Tagged ‘ visualization ’

Montreal R User Group meetup Nov. 14th

October 29, 2012
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Montreal R User Group meetup Nov. 14th

After a bit of a summer lull, the Montreal R User Group is meeting up again! We’re trying out a new venue this time. Notman House is the home of the web in Montreal. They hold hackathons and other tech user group meetups, and they are all around great people in an all around great

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Observing Dark Worlds – Visualizing dark matter’s distorting effect on galaxies

October 13, 2012
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Observing Dark Worlds – Visualizing dark matter’s distorting effect on galaxies

Some people like to do crossword puzzles. I like to do machine learning puzzles. Lucky for me, a new contest was just posted yesterday on Kaggle. So naturally, my lazy Saturday was spent getting elbow deep into the data. The training set consists of a series of ‘skies’, each containing a bunch of galaxies. Normally,

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Splitting and Combining R pdf Graphics

October 7, 2012
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Splitting and Combining R pdf Graphics

A question that often comes across various help lists is how to combine or split an output from an R graphics device. Maybe you have looped/combined multiple visuals into a single pdf to avoid cluttering your working directory and now … Continue reading →

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Mapping Bike Accidents in R

September 14, 2012
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Mapping Bike Accidents in R

At last weekend’s Hack Ta Ville event here in Montreal, I joined up with some talented urban planners and web devs to realize Vélobstacles. The idea of the project is to crowd source information on cycling conditions around the city. As with any crowd sourcing project, we were faced with the problem of seeding the

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Walmart Invasion

August 26, 2012
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Walmart Invasion

As an invasion biologist, the process of spatial spread is at the heart of what I do. When I came across this dataset of Walmart store openings since 1962 I couldn’t help but see it as an invasion front which looks a lot like a biological invasion or (albeit slow) epidemic. The video shows monthly

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Economic geography of the eastern USA circa 1999, median incomes…

August 25, 2012
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Economic geography of the eastern USA
circa 1999, median incomes…

Economic geography of the eastern USA circa 1999, median incomes by zip code Code and data source to follow in a longer post.

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The essence of a handwritten digit

August 13, 2012
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The essence of a handwritten digit

If you haven’t yet discovered the competitive machine learning site kaggle.com, please do so now. I’ll wait. Great – so, you checked it out, fell in love and have made it back. I recently downloaded the data for the getting started competition. It consists of 42000 labelled images (28×28) of hand written digits 0-9. The

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multiplicitiesoffreedom demonstrates Chaos Theory in Excel. If…

June 29, 2012
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multiplicitiesoffreedom demonstrates Chaos Theory in Excel. If…

multiplicitiesoffreedom demonstrates Chaos Theory in Excel. If he filled in more initial values, you would see a thick bar—like a picture of white-noise. Butterflies flapping their wings in Vermont to change the wind in Hangzhou? A drop of water on ...

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useR 2012: impressions, tutorials

June 19, 2012
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useR 2012: impressions, tutorials

First of all, useR 2012 (the 8th International R User Conference) was, hands down, the best-organized conference I’ve had the luck to attend. The session chairs kept everything moving on time, tactfully but sternly; the catering was delicious and varied; … Continue reading →

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useR 2012: my materials

June 14, 2012
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Just a quick note that I’ve posted the slides, code, and dataset from my useR 2012 talk. I’m having a great time here in Nashville and will write up a conference review soon, with links to the many excellent packages … Continue reading →

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