search for: partivolar

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2007 Jul 03
2
select row
Hi all, I have a little problem selecting some rows from a data.frame. I'd like to select the rows where a determinated column take a partivolar value. For example: tab id x y 1 24-2005 1621814 4834991 2 24-2005 1621856 4834907 3 24-2005 1621763 4834956 4 25-2006 1622330 4835189 5 25-2006 1622533 4834834 6 25-2006 1622535 4834909 7 25-2006 1622543 4834803 8 28-2005 1622798 4835043 9 28-2005 162229...