Nicolas Kruchten

Nicolas Kruchten is a
software engineer at Datacratic
in Montréal, Québec, Canada.

June 13, 2015
Montreal 311 Service Requests, an Analysis

Montreal 311 Service Requests, an Analysis

Earlier this year, I collaborated with a reporter from the Montreal Gazette to analyze a dataset containing information about 1.4 million service requests received by the City of Montreal from its citizens. The resulting article was entitled "Montreal's 311 records shed light on residents' concerns — to a point" and credits me at the bottom. I have also published my own interactive analysis of the dataset here: Montreal 311 Service Requests, an Analysis. The dataset, obtained from the city's Gestion des demandes clients (GDC) system via an Access to Information request, covered the five years from 2008 to 2012 and contained the date and a very short description for each request, and in most cases, an address. The service requests were received by the city through its 311 phone line or at service counters throughout the city.

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April 9, 2015
House Numbers on the Island of Montreal

House Numbers on the Island of Montreal

I’ve always been curious to see what kinds of patterns would be visible if one tried to visualize the distribution of house numbers (the number in a street address) across a city like Montreal. This week I took some time to learn enough about the OpenStreetMap system to gather and plot the data.

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March 28, 2015
VisMtl #5 Roundup

VisMtl #5 Roundup

I recently organized and MC’ed the fifth Visualization Montreal meetup, and I think it was a great success! The concept was to have a series of 7-minutes-max flash presentations from Montrealers where each one would show off a single visualization project. The rules were: no slides, no tools, just one publicly available data visualization. We had 12 presenters including me, with a good mix of types of data and visualizations. Below is the list of visualizations that were presented, and you can find photos of the event here.

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March 22, 2015
Canadian MPs 2012 Visualization

Canadian MPs 2012 Visualization

The visualization I presented at VisMtl 5 was entitled “Canadian Members of Parliament in 2012 by Province, Party, Age & Gender” and is shown above.

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January 28, 2015
The Programmatic Waterfall Mystery: Solved


A recent article on AdExchanger asks “In the supposedly super-efficient world of RTB, why would publishers continue to waterfall their demand sources?”. The article goes on to say that the publisher’s justification is “Because it works” but that “Any economist could tell you that this is a bad idea”. I’m not an economist but I can still pull together enough auction theory to show that this practice isn’t necessarily a bad one.

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© Nicolas Kruchten 2010-2015