Monthly Archives: June 2013

type = “what?”

June 13, 2013
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type = “what?”

One great thing about R is that has a wide diversity of packages written by many different people of many different viewpoints on how software should be designed. However, this does tend to bite us periodically.  When I teach newcomers about R and...

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Serious stats: using multilevel models to get accurate inferences for repeated measures ANOVA

June 13, 2013
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This article from my other blog may be of interest to readers of this blog: http://seriousstats.wordpress.com/2013/04/18/using-multilevel-models-to-get-accurate-inferences-for-repeated-measures-anova-designs/

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Le Monde puzzle [#824]

June 13, 2013
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Le Monde puzzle [#824]

A rather dull puzzle this week: Show that, for any integer y, (√3-1)2y+(√3+1)2y is an integer multiple of a power of two. I just have to apply Newton’s binomial theorem to obtain the result. What’s the point?! Filed under: Books, Kids, R Tagged: Binomial theorem, Isaac Newton, Le Monde, mathematical puzzle

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More code and images from “Displaying time series, spatial and space-time data with R”

More code and images from “Displaying time series, spatial and space-time data with R”

My book continues growing. I have recently completed the first version of the Spatio-Temporal visualization chapters. Moreover, a significant part …Continuar leyendo »

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New version of solaR

New version of solaR

I have updated my package solaR. This package provides calculation methods of solar radiation and performance of photovoltaic systems from …Continuar leyendo »

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Advanced settings in ggplot2 (R)

June 13, 2013
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Advanced settings in ggplot2 (R)

Here is a post with some information to control the layout of your graph produced by the ggplot library: http://rpubs.com/Lionel/6557 Enjoy!Filed under: R and Stat Tagged: ggplot, R

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inline 0.3.12

June 12, 2013
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Another maintenance release of inline is now on CRAN and in already included in Debian. This release was triggered by a change in the development version of R which removed an argument to package.skeleton(). The complete NEWS entry is below. Chan...

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The null model for age effects with overdispersed infection

June 12, 2013
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The null model for age effects with overdispersed infection

How does overdispersion of infections affect the behavior of the multiple-infection model? I redefine the model to account for overdispersion, assuming the same overdispersion occurs in both age classes. The parameter varies inversely with the degree of overdispersion. Again, the classes are demographically identical, and infection affects mortality but not growth: \[\begin{aligned} \frac{dJ}{dt}...

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Mini-tutorial for Quandl: How to access financial data with R

June 12, 2013
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Mini-tutorial for Quandl: How to access financial data with R

by Joseph Rickert Quandl.com, the open source website for financial data, made rapid progress earlier this year in becoming an R friendly source for financial time series data. Tammer Kamel, Quandl’s founder introduced the site on Revolutions blog in late February as a “search engine” for numerical data and explained how Quandl’s “Q-bot” can take data from almost any...

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cran2deb4ubuntu Updated for R 3.0.1 and Ubuntu 13.04

June 12, 2013
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It has taken a long time, but cran2deb4ubuntu has been updated for R 3.0.1. Over 1000 R packages are available as .deb files (with dependicies) for Ubutnu 13.04 (raring), 12.10 (quantal) and 12.04 (precise). These packages can be found at the c2d4u PPA. Instructions on how to install the PPA can be found on this...

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