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posixctdatetime
2009 Feb 23
3
Dates and times from Excel
I have used xlsReadWrite to read data from an Excel spreadsheet.
I had a problem with converting times of the day so that I could create
POSIXct date-time objects. I was wondering if there was a better
solution.
Excel stores times of the day as fractions of a day so I wrote a function
to convert the fraction to a number of seconds, extract the hours, minutes
and seconds and output it in ISO