January 29, 2011

The silence in Davos

A terrific article about the absence of discussion of Egypt in Davos. http://www.theatlantic.com/business/archive/2011/01/davos-is-silent-as-egypt-burns/70463/

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January 10, 2011

$ operator not defined for this S4 class

I was trying to reproduce Figure3.11 in Gelman and Hill (2006).  I got an error message, "$ operator not defined for this S4 class."  (R 2.12.1)  I have no idea what a class is.  I changed "$" in their codes...

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How to change language setting of R on Windows

I read FAQ on CRAN, but it was a bit confusing to a novice like me.  So here is the screenshot.  First, go to the "etc" folder under R program files folder.  Then locate Rconsole file. Find the line "language...

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