Years ago (2004?) i was wandering through Central Park, up towards Harlem i think, and i discovered the Park's composting facilities. It was a 5 year old's dream, a leaf pile the size of a castle (albeit shredded and rapidly decomposing), french drain-style aeration pipes threaded throughout. It was spring, cold still, with the last crocuses and the first daffodils blooming, and there was a great quantity of microbially-warmed air pouring forth from this mountain of leaves. It totally changed the way i saw Central Park *and* composting.
A Practical Guide to Selecting Top N Values by Group in R
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Introduction
In data analysis, there often arises a need to extract the top N values
within each group of a dataset. Whether you’re dealing with sales dat...
1 day ago
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