Hi, is there a good way (instead of a time-consuming for loop) to transfer a key/value pair dataframe to a dataframe with key as column and value as row? For example, I have a dataframe with three columns: id, code, value: id,code,value 1,hi,10.3 1,lo,5.2 2,hi,19.4 3,hi,20 3,lo,12 4,lo,5.8 I want to get a dataframe like this: id,hi,lo 1,10.3,5.2 2,19.4,NA 3,20,12 4,NA,5.8 Thank you, Richard
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