[R] group by function

Dear group, kindly, I have the following data frame structure(c(2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1.5, 2, 1, 0, 2, 2, 1.5, 0, 0, 1, 1, 2, 0, 1, 2), .Dim = c(15L, 3L), .Dimnames = list( NULL, c("i", "Measure_id", "value"))) it has 3

Re: [R] group by function

?? Row 4 has i = 2 and Measure_id =4 and therefore has value divided by the max of all values with that i and Measure_id, which is 1. Row 7 has i =2 and Measure_id =2, and so is divided by the max value in all rows with those values of i and Measure_id, which is 2. etc. So either you do not

Re: [R] group by function

many thanks for replying, yes I am kindly accept my pardon, I mistaken the rows from each other many thanks I will read them. Ragia  > Date: Sat, 7 Nov 2015 07:48:36 -0800 > Subject: Re: [R] group by function > From: bgunter.4...@gmail.com &