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Dear R user I have data created using code below b<-matrix(2:21,nrow=4) b[,1:3]=NA b[4,2]=5 b[3,1]=6 Now the data is > b [,1] [,2] [,3] [,4] [,5] [1,] NA NA NA 14 18 [2,] NA NA NA 15 19 [3,] 6 NA NA 16 20 [4,] NA 5 NA 17 21 I want to keep data in column 4 greater than 15 and the value in column 1 & 2 either greater than 4

Dear R users I read two csv data files into R and called them Tem1 and Tem5. For the first column, data in Tem1 has 13 digits where in Tem5 there are 14 digits for each observation. Originally there are 'numerical' as can be seen in my code below. But how can I display/convert them using other form rather than scientific notations which seems a standard...