Articles by Mark van der Loo

A multidimensional "which" function

September 16, 2011 | Mark van der Loo

The well-known which function accepts a logical vector and returns the indices where its value equals TRUE. Actually, which also accepts matrices or multidimensional arrays. Internally, R uses a single index to run through such two- or higher-dimension...
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August 19, 2011 | Mark van der Loo

useR!2011 ended yesterday. First of all, much thanks to the organizers who managed to run a conference with 400+ participants, from 41 countries smoothly. Thumbs up! It was great to meat some people from the R blog-O-sphere in person, like Tal "R-blogg...
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