If I am sub-setting using logical statements, is there a way of combining without using logical operators? i.e. is there a more effective way of doing the following:
train$TOD[train$Hour == 23 | train$Hour == 0 | train$Hour == 1 | train$Hour == 2]
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zx8754
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user2648499
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1Try `train$TOD[ train$Hour %in% c(23,0,1 2) ]` – zx8754 Jun 16 '15 at 13:24
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If you are using devel version of `data.table`, `library(data.table);setDT(train, key='Hour')[.(c(23,0,1,2)), TOD]` – akrun Jun 16 '15 at 14:39
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With a reproducible example it could be great but I think that this code is what you are looking for:
train[train$Hour %in% c(0, 1, 2, 23), ]
SabDeM
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You are welcome, but just a reminder for next time: help users to help you by providing a ***reproducible* example. Here you can find useful informations: http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example – SabDeM Jun 16 '15 at 13:29