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2008 Oct 22
0
newbie Syntax questions: Re-Calculating expansion factors
...targets. I'm trying to figure out how to program the subsequent recalculations in R. I'm thinking that {schematically} it may look something like this: TargetX1Sums <- ##{read an external file of totals for tripid_nu/lineon, How should I format the data?? Dataframe or matrix??}## TargetX2Sums <- xtabs(~tripid_nu, data= TargetX1Sums) InitX1Sums <- xtabs(~tripid_nu+lineon, data=SurveyData) SurveyData$NewX1= ##{some formulation of TargetX1Sums/InitX1Sums, selecting by tripid_nu/lineon }## InitX2Sums <- xtabs(NewX1~tripid_nu, data=SurveyData) SurveyData$NewX2= ##{so...