combine

Splitting and Combining R pdf Graphics

October 7, 2012 | tylerrinker

A question that often comes across various help lists is how to combine or split an output from an R graphics device. Maybe you have looped/combined multiple visuals into a single pdf to avoid cluttering your working directory and now … Continue reading → [Read more...]

A quick primer on split-apply-combine problems

December 16, 2011 | richierocks

I’ve just answered my hundred billionth question on Stack Overflow that goes something like I want to calculate some statistic for lots of different groups. Although these questions provide a steady stream of easy points, its such a common and basic data analysis concept that I thought it would ... [Read more...]

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