Monthly Archives: January 2010

RInside release 0.2.1

January 6, 2010
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The shiny new 0.2.1 release of RInside, a set of convenience classes to facilitate embedding of R inside of C++ applications, just went out to CRAN; sources are also at my RInside page This is a maintenance release building on the recent 0.2.0 rel...

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New Features in ggplot2 0.8.5

January 6, 2010
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Learning R blog details some of the new features in the latest update to ggplot2. The latest version includes functions to make it easier to change axis and legend labels, as well as a function to easily set the limits of the plot display outside the range of the data. Be sure to check back next week - I'm putting...

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Earthquake maps

January 6, 2010
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Earthquake maps

There's been a number of earthquakes in the Solomon Islands over the past few days, including one that caused a tsunami to partially destroy the village of Baniata on Rendova, Western Provence. You can see exactly how many earthquakes have occurred the...

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New Features in ggplot2 version 0.8.5

January 6, 2010
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New Features in ggplot2 version 0.8.5

Just before Christmas ggplot2 version 0.8.5 was released, closely following the release of version 0.8.4 a week or so earlier. Whilst both versions included included numerous bugfixes (25 in 0.8.4 and 17 in 0.8.5), the latest version also incorporated some new features. As ggplot2 is all about graphical display, so I went through the list

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The number of R packages is growing exponentially

January 6, 2010
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The number of R packages is growing exponentially

The second issue of the R Journal is out now, and in addition to a bevy of contributed articles and some news from the R Core Group on the new help system introduced in R 2.10, there's an invited section called, intriguingly, "The Future of R". In that section John Fox provides an exhaustively researched and insightful review of...

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Latin squares design in R

January 6, 2010
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Latin squares design in R

The Latin square design is used where the researcher desires to control the variation in an experiment that is related to rows and columns in the field.Remember that: * Treatments are assigned at random within rows and columns, with each treatment once per row and once per column. * There are equal numbers...

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littler 0.1.3

January 5, 2010
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A new littler release (now at 0.1.3) just went out of the door this evening. littler provides r (pronounced littler), a shebang / scripting / quick eval / pipelining front-end to the the R language and system. This version adds a few minor behind-...

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Typos in Chapter 2

January 5, 2010
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Typos in Chapter 2

When grading homeworks for my Monte Carlo graduate class, I found that my students had pointed out two typos in the exercises of Chapter 2 of “Introducing Monte Carlo Methods with R”. – In Exercise 2.17, question d. should be “d. Show that the maximum of is attained at .“ – In Exercise 2.21, in item

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Transitions and transversions in R

January 5, 2010
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Transitions and transversions in R

A couple of months ago I wrote the following R function to calculate the number of transitions and transversions between DNA sequences in an alignment. The function is fairly slow (an alignment of ~100 sequences, 800 bp in length takes around 30 second...

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Setting the HTML title tag in SAS ODS (the right way)

January 5, 2010
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Setting the HTML title tag in SAS ODS (the right way)

In our department and various places on the Intertubes, SAS programmers set the HTML title tag (which sets the title in web browsers and on search engines) in ODS using the headtext option: ods html headtext="<title>My great report</title>" /* wrong! */ file="foo.html"; This may work in some situations, but it’s ugly and wrong. To see

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