cookbook

Vanilla C code for the Stochastic Simulation Algorithm

October 24, 2011 | 0 Comments

The Gillespie stochastic simulation algorithm (SSA) is the gold standard for simulating state-based stochastic models. If you are a R buff, a SSA novice and want to get quickly up and running stochastic models (in particular ecological models) that are not … Continue reading → [Read more...]

Great-circle distance calculations in R

November 23, 2010 | 0 Comments

Recently I found myself needing to calculate the distance between a large number of longitude and latitude locations. As it turns out, because the earth is a three-dimensional object, you cannot simply pretend that you are in Flatland, albeit some … Continue reading →
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