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2012 Jun 12
3
Mapping one vector to another
Hi, I'm new here, I'd like to map a set of values in a data frame to another set of values in another frame (think a c++ map<>, a python dict or a hash lookup) Specifically, I have a data frame of information about trading periods in the NZ electricity market. For each period I have information about each bus (or node) in the network. I'd like add a "column" to the