Monthly Archives: June 2012

Pasting Excel data into R on a Mac

June 2, 2012
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Pasting Excel data into R on a Mac

When starting out with R, getting data in and out can be a bit of a pain. It should take long to work out a convenient method – depending on what OS you use and what other packages you work with. In my case I prefer to work with Excel spreadsheets (which are versatile and

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Project Euler — problem 6

June 2, 2012
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Project Euler — problem 6

It’s midnight officially. Let me solve the sixth problem before bed. This is a quick one. The sum of the squares of the first ten natural numbers is, 12 + 22 + … + 102 = 385. The square of … Continue reading →

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11 Million Yellow Slips – City of Toronto Parking Tickets, 2008-2011

June 2, 2012
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11 Million Yellow Slips – City of Toronto Parking Tickets, 2008-2011

IntroductionI don't know about you, but I really hate getting parking tickets. Sometimes I feel like it's all just a giant cash grab. Really? I can't park there between the hours of 11 and 3, but every other time is okay? Well, why the hell not?Bu...

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Visualizing car brand choices in ggplot2

June 2, 2012
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Visualizing car brand choices in ggplot2

I always like to read new posts at chartsnthings as they always inspire me with new ideas for data visualization. Yesterday I have read an article on choices of car brands by members of parliament in Poland in Gazeta.pl. It contains a simple ...

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Calling R from SAS IML Studio

June 1, 2012
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Calling R from SAS IML Studio

I am playing around with SAS IML Studio 3.4.  For those that do not know, IML (Interactive Matrix Language) is the Matlab-esk language from SAS.  It opperates from normal SAS code through the PROC IML procedure.  A new (to me at least) UI has been developed for analysts called IML Studio.  IML Studio uses a superset of the IML...

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Double Release: Rook 1.0-5 and rApache 1.1.21

June 1, 2012
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Double Release: Rook 1.0-5 and rApache 1.1.21

I wanted to get these releases out the door before the useR conference, especially since I’m giving a tutorial on Rook! There were two bugs found in Rook, not by me, but by users! This is a fantastic step in the right direction as it’s an ...

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System from Trend Following Factors

June 1, 2012
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System from Trend Following Factors

As I thought more about Trend Following Factors from Hsieh and Fung, I thought that the trend following factors might indicate a state/regime for the equity markets that could potentially offer momentum-style timing signals for a system on the S&P ...

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Distribution of Oft-Used Bash Commands

June 1, 2012
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Distribution of Oft-Used Bash Commands

Browsing commandlinefu.com today, I came across this little one-liner to display which commands I use most often. Here’s what I got: Yep, seems legit. I navigate and look at files a whole bunch (ls, cd, cat), and I do a butt tonne of editing (vim). I sudo like a boss, hop onto various servers (ssh),

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Life contingencies with R

June 1, 2012
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Life contingencies with R

I will be giving in less than four weeks a short course at the 6th R/Rmetrics Meielisalp Workshop & Summer School on Computational Finance and Financial Engineering organized by ETH Zürich, https://www.rmetrics.org/. The talk will be on Actuarial models with R, and first part will be dedicated to life insurance. A complete set of slides can be downloaded from the...

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The influences that shaped R: Inferno-ish R

June 1, 2012
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The influences that shaped R: Inferno-ish R

Patrick Burns, author of the excellent R Inferno, gave a presentation about R at the Cambridge R User Group this week. (Revolution Analytics is a proud sponsor of CambR.) I wasn't at the presentation myself, but Pat always gives a great talk, and he's generously provided his slides with copious notes. They're definitely worth a read if you're interested...

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