On 3/25/2011 6:36 PM, Benno Blumenthal wrote:


On Fri, Mar 25, 2011 at 6:54 PM, John Caron <[email protected] <mailto:[email protected]>> wrote:

    On 3/22/2011 6:53 AM, John Caron wrote:
    Consider:

       int time(sample=1001);
         :long_name = "Measurement time";
         :standard_name = "time";
         :units = "days since 1970-01-01";

    vs

       int time(sample=1001);
         :long_name = "Measurement time";
         :standard_name = "time";
         :units = "3 days since 1970-01-01";

    values = 1, 2, 3, ...

    are these equivalent or does the second one mean every 3 days ?
    Is the second one illegal ?

    Im am going to assume that the second form is illegal, that is,
    you may not have a number in front of the unit in a "time
    coordinate unit" (CF section 4.4)


I wish you wouldn't. We use that all the time, though mostly for 365_day calendars.

Benno

could you give an example. do you ever use non-integers ?
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