Greetings from an R newbie
Table imported with 4 columns containing Dates and Times, I desire to determine the differences between said columns
Have loaded the base and chron packages for R commander. Have tried to use format but without success. Have tried the Postix commands but error states "unused argument (s) (...)", even though some of the examples do not use (...) at the end of the command
Example:
Table is named GvY1
Operation.Time.End Operation.Time.Dictated Operation.Time.Verfiy
7/10/2004 10:10:12 7/12/2004 9:18:03 7/28/2004 05:00:02
Information is mm/dd/year hh:mm:ss (time of day, e.g. the first column is July 10th 2004 10:10 AM at 12 seconds)
What is the best way to get the difference between any of the 2 columns? And eventually test statistics on the columns (eg. P values, if needed, but not a priority at this time)
Thanks in advance
Platform WinXP IBM T40p R v 1.8.1 R commander
-- Mark R Laflamme,MD Regenstrief Institute 1050 Wishard Blvd RG5 Indianapolis, IN 46202 317 630-7833
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