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...I have then tried unsuccessfully to convert the data to time format (e.g. using the strptime function like date1 <- strptime(myObj[0],format="%H:%M:%S")) to be able to perform a datediff operation. I would be very grateful if anybody could give me some assistance. Thanks in advance, Ieyasu -- View this message in context: http://www.nabble.com/diff-of-two-timestamps-tp25267603p25267603.html Sent from the R help mailing list archive at Nabble.com.

Hi all, I have the following problem: I have a data frame (actually it is a prop.table) which I want to print as a list, e.g.: C1 C2 C3 R1 0.0 0.0 1.0 R2 1.0 0.0 0.0 R3 0.0 0.0 0.0 R4 0.0 1.0 0.0 should be printed like C1;R1;0.0 C2;R1;0.0 C3;R1;1.0 C1;R2;1.0 C2;R2;0.0 ..... Is there any existing solution out there or could somebody please give me a hint on how to

Hi, I have the following problem: I have a list of entries with vehicles going from some places to others and the time that they need. e.g. Vehicle Start End Time 1 A B 5 2 A C 4 3 A C 3 4 B A 6 5 B C 4 6 B C 6 7 C B 2 8 C B 4 9