Displaying 1 result from an estimated 1 matches for "getmaxv".
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getmax
2007 Aug 31
3
data frame row manipulation
...","Bob",
"Michael","Steve","Bob","Michael","Steve","Bob"), vol=c(3,5,4,2,4,5,7,6,7))
evaluation #
maxval=summaryBy(vol ~ name,data=evaluation,FUN = function(x) { c(ma=max(x))
} )
maxval # over all days per person
#function
getMaxVal=function(x) { maxval$vol.ma[maxval$name==x] }
getMaxVal("Steve") # testing the function for one name is ok
#we want to add a column, that shows the daily drinkingvolume in relation to
the persons max-vol.
evaluation[,"relDrink"]= evaluation$vol/getMaxVal(evaluation$name)
#
#...