4596 search results for "git"

Who uses E-Bikes in Toronto? Fun with Recursive Partitioning Trees and Toronto Open Data

September 12, 2013
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Who uses E-Bikes in Toronto?  Fun with Recursive Partitioning Trees and Toronto Open Data

I found a fun survey released to the Toronto Open Data website that investigates the travel/commuting behaviour of Torontonians, but with a special focus on E-bikes.  When I opened up the file, I found various demographic information, in addition to a … Continue reading →

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Send Mac OS Notifications From R

September 12, 2013
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Send Mac OS Notifications From R

The data retrieval and computation operations are taking longer and longer as we start cranking through more security data and I’ll often let tasks run in the background whilst performing more mundane tasks or wasting time on Twitter. For folks using RStudio Desktop on a Mac, you can use the #spiffy terminal-notifier from Julien Blanchard

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pander 0.3.8 is out

September 12, 2013
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pander 0.3.8 is out

I have just released a new version of pander to CRAN with some minor fixes and some (hopefully) useful new features to generate markdown tables beside other tools:although I really love the Droid Sans font that I used to bundle with the package, I deci...

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rCharts | PerformanceAnalytics Tables + Systematic Investor Cluster

September 12, 2013
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rCharts | PerformanceAnalytics Tables + Systematic Investor Cluster

I thought a good extension of the last post d3-ify Systematic Investor Cluster Weight would be to analyze the returns with every table that PerformanceAnalytics offers.  Since d3 interactive charts are way more fun than tables, let’s plot each table with dimplejs and rCharts. Click here or on the screenshot...

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Direction of Change Forecasting using a Dynamic Binary Model

September 12, 2013
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Direction of Change Forecasting using a Dynamic Binary Model

While it is generally accepted that the returns of financial assets are almost impossible to forecast with any degree of accuracy which would provide meaningful profit1 , there is evidence that the sign of the returns is much more forecastable. Theoretically, Christoffersen and Diebold (2006) have shown how the forecastability of the sign is related

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Why use R for Data Analysis?

September 11, 2013
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This was a presentation made to few of my colleagues. The idea was to provide a brief introduction to R, provide few reasons for my switching to it, and give some samples of graphics/interactive visualizations that could be created with minimal coding....

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Implementing a DPU with OpenCPU

September 11, 2013
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Implementing a DPU with OpenCPU

One of the prime use cases in the design of OpenCPU has been the “Data Processing Unit”, for short: DPU. A DPU is a modular, stateless data I/O unit which is called remotely by other software. In the OpenMHealth architecture a DPU must use JSON for data input and output, and is called over...

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Blog Logo

September 11, 2013
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Blog Logo

Welcome to my new website/blog. I am aiming to highlight some of the R packages that I have created. You can see a list of all the R packages I have in development and also see the source code on github here: R packages. In addition, I'll likely talk about various topics with statistics, teaching,...

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Implementing a DPU with OpenCPU

September 11, 2013
By
Implementing a DPU with OpenCPU

One of the prime use cases in the design of OpenCPU has been the “Data Processing Unit”, for short: DPU. A DPU is a modular, stateless data I/O unit which is called remotely by other software. In the OpenMHealth architecture a DPU must use JSON for data input and output, and is called over...

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The Happiest Emoticons

September 10, 2013
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The Happiest Emoticons

Clearly, a :) is happier than a :( but what about a :-* and a :-D ? Or a :-| and a :-o ? In this post I attempt to rank emoticons in order of how happy someone has to be to use each one. (And punctuate horribly to avoid mixing punctuation with the emot...

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