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Based on an example from here I try to parse dates from a table including the time, but it fails. This is the modified example:

Export["test.dat", {{"2010-05-19 22:23:43", 17}, {"2010-05-20 22:23:43", 20}, {"2010-05-21 22:23:43", 19}}, "FieldSeparators" -> " "];

Import["test.dat", "Table", "DateStringFormat" -> {"Year", "-", "Month", "-", "Day", " ", "Hour", ":", "Minute", ":", "Second"}]

Does anyone understand why it doesn't work in analogy to the other case?

thanks

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  • $\begingroup$ "DateStringFormat" seems to only return three elements (Y,M,D ) even if (Y,M,D H:M:S) are specified and apparently recognised. $\endgroup$ – image_doctor Jul 6 '12 at 8:42
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A workaround:

imported = Import["test.dat", "Table"]

We get:

(* {{"2010-05-19 22:23:43", 17}, {"2010-05-20 22:23:43", 
    20}, {"2010-05-21 22:23:43", 19}} *)

You can then apply DateList to convert it to a date list:

MapAt[DateList, #, 1] & /@ imported

(* {{{2010, 5, 19, 22, 23, 43.}, 17}, {{2010, 5, 20, 22, 23, 43.}, 
    20}, {{2010, 5, 21, 22, 23, 43.}, 19}} *)
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  • 1
    $\begingroup$ Even shorter: MapAt[DateList, #, 1] & /@ imported $\endgroup$ – Mr.Wizard♦ Jul 6 '12 at 10:21
  • $\begingroup$ @Mr.Wizard you're right, I'm going to correct it. $\endgroup$ – VLC Jul 6 '12 at 10:27

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