search for: makenul

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2013 May 26
0
SAPPLY function for COLUMN NULL
colnames(dd) #[1] "col1" "colb" null_vector<- colnames(dd) sapply(null_vector,makeNull,dd) #???? col1 colb #[1,]?? NA??? 4 #[2,]??? 2?? NA #[3,]??? 3??? 2 #[4,]??? 4?? NA #[5,]??? 1??? 4 #[6,]?? NA??? 5 #[7,]??? 1??? 6 A.K. >I am trying to make a column value in a dataframe = NA if there is a 0 or high value in that column. I need to do this process repeatedly, hence I >ha...