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2012 Jan 21
4
Create subset using variable
I am trying to create a loop that will perform a series of analyses. I am using geeglm from geepack, which fails if there are any null values. Creating a subset solves this, but do not seem to be able to set the subset dynamically based on a changing variable. while (j <= y.num) { strSubset = as.character(df.IV$IV[j]) #Gives column name in quotes df.data.sub = subset(df.data,