Arun caught my attention that I committed a mistake with example data set.
I send now the correct, with same text explain my problem.
Sorry all of you for the confusion.
I have a very large data frame (more than 5 million lines) as below (dput
example at the end of mail):
Station Antenna Tag
Hello all,
I have a very large data frame (more than 5 million lines) as below (dput
example at the end of mail):
Station Antenna TagDateTime Power Events
1 2 999 22/07/2013 11:00:2117 1
1 2 999 22/07/2013 11:33:4731 1
1 2 999 22/0
Hello all,
I´m have a very large data frame (more than 5 million lines) as below (dput
example at the end of mail):
Station Antenna TagDateTime Power Events
1 1 2 999 22/07/2013 11:00:2117 1
2 1 2 999 22/07/2013 11:33:4731 1
3 1 2
3 matches
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