r - Operating with time intervals like 08:00-08:15 -

I would like to import a time-series where the first field shows a duration:

  08: 00-08: 15 08: 15-08: 30 08: 30-08: 45  

Is there any special features to do this smoothly?

Thank you!

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Update:

The most promising solution I found, as was the Cron package suggested by Godeke and using the substrings () to extract The beginning of the interval for.

I am still working on related issues, so I will update with the solution when I get it.

then you have been given a letter vector such as c ("08: 00-08 : 15 ", 08: 15-08: 30) and you want to convert to the internal R data type for stability? Check help files for POSIXt and Sprite.
How about such a function:

  importTimes & lt; - Function (t) {T & lt; - Return strsplit (t, "-") (loopy (t, striptime, format = "% H:% M:% S"))}  

The character will take the vector, and a list will return the same length, each of which is a POSIXt 2-vector element that gives start and end time (today's date). If you want to standardize that date, you can add a paste ("71-01-01", x) anywhere inside the function if it is a problem.

Does that help exactly?