Hi, I have a list of data, e.g. r[[i]] r[[1]]= 1 2 1 6 5 5 5.5 3 r[[2]]= 4 6 3 5 7 8 3 5 … r[[500]]. In the first column, the selected values should like this: (the later value)-(the former value)>=1 In the second column, the selected values should like this: (the former value)-(the later value)>=1. The outputs are: For r[[1]] [1,1] 1, [3,1] 5, [1,2] 2 For r[[2]] [1,1] 4, [3,1] 7 [1,2] 6, [2,1] 5 … r[[500]]. I have no idea what kind of functions can be used in this process. Could you help me? Thank you very much.
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