Posts Tagged ‘ R ’

Debugging in R

August 30, 2007
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Anyone who starts writing serious R code (i.e., code that involves user-written functions) soon finds the need to use debugging tools. There are a few basic tools in R that are worth knowing about. The function debug() allows one to step through the ex...

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119 days of number crunching…

August 23, 2007
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119 days of number crunching…

Just checked on the 70000+ simulations I submitted to the Cow last night. The purpose of these runs is to explore a given system (the logistic growth model in this case) using different implementations of the stochastic simulation algorithm (aka … Continue reading →

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Cow chewing on GillespieSSA

August 22, 2007
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Cow chewing on GillespieSSA

Sorry blog for the long silence. Lately I have been juggling several time critical projects and there hardly seems to be time for such mundane activities such as sleeping, eating, never mind shaving (someone pointed out that I am starting … Continue reading →

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GillespieSSA 0.1-0 is released

August 19, 2007
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GillespieSSA 0.1-0 is released

I just submitted the first release of the GillespieSSA package to CRAN. After much debating I finally decided to adhere to the unwritten R version numbering policy of starting really really low (and asymptotically approaching 1.0-0) . Thus, the first … Continue reading →

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Open Source/Science – drilling down to unknown depths in unexpected places

August 12, 2007
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Open Source/Science – drilling down to unknown depths in unexpected places

Yet another point John Chambers addressed in his key note speech (see previous post Programing as a higher craft) was the virtue of Open Source software. According to John there are two principles for programing (with R) Enable effective and … Continue reading →

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Programing as a higher craft

August 11, 2007
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Programing as a higher craft

In his keynote speech at the useR! meeting John Chambers of Statistics research at Bell Labs (one of the founders of the S System, which subsequently gave rise to the R project) asked the question what is programing? As it … Continue reading →

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rgl: R and OpenGL

August 11, 2007
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rgl: R and OpenGL

There were many presentations at the useR! meeting showing off amazing graphics that I had no idea R was capable of. It is clear to me that graphically speaking I have been living in the dark ages until now. One … Continue reading →

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Things overheard at the useR! meeting

August 11, 2007
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Things overheard at the useR! meeting

Here are a few things I overheard at the useR! meeting. These comments and quotes do not necessarily represent my opinions (although many do) and since many of them were overheard in informal discussions and rants I will not name … Continue reading →

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Report from the useR! meeting in Ames

August 10, 2007
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Report from the useR! meeting in Ames

I was not sure what to expect at this meeting. The only thing I was certain about was that I was not about to experience wiener schnitzels, waltz and Austrian high culture (in contrast to last years useR! meeting). Despite … Continue reading →

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Looking for a few good beta testers

August 7, 2007
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Looking for a few good beta testers

Sitting in a dreary hotel room in San Jose with Interstate 101 on my left and a burger joint/truck stop on my right (see previous post Report from the meeting of the Ecological Society of America in San Jose for … Continue reading →

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