Monthly Archives: May 2011

Home Away From Home

May 2, 2011
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Home Away From Home

It used to be stuffed animals everywhere. These days, it's those annoyingly small lego pieces. Toys in the house have a certain Tribble quality to them. They propagate during some designated time in the middle of the night and in the morning, they are ...

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Sustainable Futures conference in Manchester

Sustainable Futures conference in Manchester

Recently, Kevin Ummel gave a short conference about his PhD research at the Sustainable futures – Tyndall Centre researchers’ international conference. His work, named “Optimizing worldwide deployment of wind and solar power technologies via a high resolution, linear programming model”, is built with R. He is using the solaR package for the solar irradiance calculations,

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Postdoc on adaptive MCMC in Paris

May 2, 2011
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Postdoc on adaptive MCMC in Paris

Although the official deadline is long past, I just became aware of this call for a postdoctoral position in Paris starting next Fall. Please feel free to apply: Summary Adaptive Markov Chain Monte Carlo (MCMC) methods are currently a very active field of research. MCMC methods are sampling methods, based on Markov Chains which are

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Building R packages for Windows when you don’t use it.

May 2, 2011
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Are you a non-windows user wanting to share your R package with others who do use windows? There's a handy utility (http://win-builder.r-project.org/)that allows you to upload your .tar.gz file and it checks it, builds it, and sends you a link to downl...

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"Inside" Functors — Evaluating things more than once

May 1, 2011
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"Inside" Functors — Evaluating things more than once

(The examples here work with the version of insidefunctor tagged as "v1") I ran into an interesting problem using "inside" functors. Something is wrong in the following code (well, depending on what you thought it should do). __ library(insidefunctor) __ `%+.%` = fmap(`+`) __ x = seq(0, 10, len = 50) __ plot(x, collect(each(x) %+.% runif(1))) It's clear that in constructions like each(x) + y, y is only going...

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The R Inferno revised

May 1, 2011
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The R Inferno revised

Hell is new and improved. The R Inferno has been revised.  If you don’t know of it, it is a short explanation of a few trouble spots when using the R language.  Somehow the short explanation grew to approach book-length. It can be found at the usual place: http://www.burns-stat.com/pages/Tutor/R_inferno.pdf Major improvements An index has been … Continue reading →

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Here comes the sun

Here comes the sun

The solar irradiance incident outside the earth’s atmosphere is called the extraterrestial or extra-atmospheric irradiance. It is derived from the solar constant only with geometric equations. It can be easily calculated with the calcSol function of the solaR package. With this post I will show an example with some packages from the Spatial task view.

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Bayesian Confidence Intervals: Obama’s ‘That’-Addition and Informality

May 1, 2011
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Bayesian Confidence Intervals: Obama’s ‘That’-Addition and Informality

No “That” Left Behind? I came across a post on Language Log last week giving some evidence that Obama tends to add that to the prepared version of his speeches. For example, in a recent speech at George Washington University, … Continue reading →

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Some rediscovered R scripts from spring cleaning

May 1, 2011
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Some rediscovered R scripts from spring cleaning

Gompertz Model Visualization # Gomperz growth function gomp

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