How to reshape from long to wide format in R?

jeromyanglim / learning_r

assorted notes to self while learning R

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Closed jeromyanglim closed 12 years ago

jeromyanglim commented 12 years ago

I often forget the details of all the options of the reshape command. I generally find the documentation a little bit confusing.

What's a good way to remember the options for reshape?

jeromyanglim commented 12 years ago

This UCLA tutorial is clear: http://www.ats.ucla.edu/stat/r/faq/reshape.htm The following adapts the UCLA code to a common example that I have:

w <- reshape(long_data, 
  timevar = "var_name",
  idvar = "id"
  direction = "wide")