Monthly Archives: May 2009

Embeding fonts in figures produced by R

May 27, 2009
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Some publishers insist that we embed (include) the fonts in each figure. Here is a set of links regarding this issue for figures produced by R:http://tolstoy.newcastle.edu.au/R/help/05/01/10779.htmlhttps://stat.ethz.ch/pipermail/r-help/2006-October/114...

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R and data

May 26, 2009
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R and data

My fellow bloggers John and Scott have posted recently about the free statistical programming language R.  How does it compare to an expensive language like SAS? If you’ve done any statistical analysis, then you’ll know that getting and cleaning the data is a major step in any project.  SAS does a pretty good job at

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Free one-day R course at Vanderbilt

May 26, 2009
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The Vanderbilt Kennedy Center is offering a free (repeat, free) one-day introductory course to the R statistical computing language on June 23, taught by Theresa Scott from the department of Biostatistics. You can find contact/registration info at the link below.Vanderbilt Kennedy Center - An Introduction to the Fundamentals & Functionality of the R LanguageIn case you missed it,...

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More Recursion in R

May 26, 2009
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I found another gem in R today. Earlier I commented about how R could do recursion, something that I love. I write some pretty complicated recursion functions in my research, but I also have a bad habit of compulsively reorganizing things. Now I've c...

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Simple Approach to Converting GRASS DB-backends

May 23, 2009
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  Premise: The current default database back-end used by the GRASS vector model is DBF (as of GRASS 6.5), however this is probably going to be changed (to SQLite) in GRASS 7. The DBF back-end works OK, however it tends to be very sensitive (i.e. breaks) when reserved words occur in column names or...

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Temporary Debian mail outage

It would appear that debian.org rejected mail for maybe up to twelve hours from late yesterday afternoon (Central timezone) to some time shortly after I got up this morning. Things appear to be back to normal, so a big Thanks to the mail admins. If you happened to have sent me mail to my debian.org address during that time period, you may have...

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Data.gov

May 21, 2009
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Data.gov

I am always on the lookout for useful data sources for training in statistics, so I am excited that Data.gov has opened for business. The purpose of Data.gov is to increase public access to high value, machine readable datasets generated by the US Government.

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Bootstrapping and the boot package in R

May 21, 2009
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Bootstrapping and the boot package in R

I was recently asked about options for bootstrapping. The following post sets out some applications of bootstrapping and strategies for implementing it in R.I've found bootstrapping useful in several settings:where the statistic I'm interested in is a ...

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Baby steps with RSRuby in Rails

May 20, 2009
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Baby steps with RSRuby in Rails

Plotting and charting libraries for Ruby (on Rails) abound. However, few are sophisticated enough for scientists and many are not actively maintained. Plotting in R, on the other hand, is about as sophisticated as it comes. Can we bridge Ruby and R? Yes we can, thanks to Alex Gutteridge’s RSRuby. The next

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Create multiple graphics in R without multiple calls to pdf / postscript / jpeg / png

May 14, 2009
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To save multiple graphics, e.g, Rplot001.pdf, Rplot002.pdf, …, Rplot050.pdf, we don’t have to call pdf() 50 times (or any similar function). Use “Rplot%03d.pdf” for filename in pdf() and each plot() call will be saved to a new pdf file. Use dev.off() once at the end to close all devices! check out ?sprintf for more information

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