Re: [thredds] NcML Aggregation Question - Not wanting time as strings

I will add that:
my reading of the CF standard is that coordinate (AKA axis, AKA dimension) variables must be numeric:
"coordinate variable
We use this term precisely as it is defined in section 2.3.1 of the NUG. It is a one-dimensional variable with the same name as its dimension [e.g., time(time)], and it is defined as a numeric data type with values that are ordered monotonically. Missing values are not allowed in coordinate variables. "

So, it would be great if THREDDS could extract the date coordinates from the file names and make a *numeric* time coordinate/axis/dimension variable.

I know that choosing the units brings up other issues. Perhaps they could be specified by the THREDDS administrator, or perhaps THREDDS could just always use units="seconds since 1970-01-01".

On 9/6/2011 3:37 PM, Roy Mendelssohn wrote:
Hi All:

The following has come up in a problem we are working on:

I'd like to aggregate files as in the example toward the bottom of:

"Extracting date coordinates from the filename"

The text in the tutorial states:

'The net effect is to add a coordinate variable, whose values are ISO
8601 formatted date/time Strings, with a _CoordinateAxisType of
"Time" ..."

Is there any for this variable to be a timestamp rather than date/time

Listing the values is not that practical since there are over 3000 files and 
the number will grow.  Thanks for any help.


"The contents of this message do not reflect any position of the U.S. Government or 
Roy Mendelssohn
Supervisory Operations Research Analyst
Environmental Research Division
Southwest Fisheries Science Center
1352 Lighthouse Avenue
Pacific Grove, CA 93950-2097

e-mail: Roy.Mendelssohn@xxxxxxxx (Note new e-mail address)
voice: (831)-648-9029
fax: (831)-648-8440

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Bob Simons
IT Specialist
Environmental Research Division
NOAA Southwest Fisheries Science Center
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Pacific Grove, CA 93950-2079
Phone: (831)658-3205
Fax:   (831)648-8440
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The contents of this message are mine personally and
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