Useful code

This is a directory of examples that will build over time.

• How to create an RStudio project
  (to organise your R scripts and data)
• How to calculate differences between sequential times within monitoring sites
  (i.e. time lags)
• How to change values across an entire data frame
  (using base R subsetting with [])
• Releveling uniquely numbered months
  (correctly giving month names to oddly labelled, yet sequential months)
• Revealing the hidden pattern in the traps data set
  (using logistic regression and model selection)

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