[Esip-documentation] how to describe flag_values, flag_meanings in netCDF

Fri May 23 13:32:45 EDT 2014

On 2014-05-23 10:26 AM, Armstrong, Edward M (398M) wrote:
> Looks good to me.
>
> The flag_values is of the same “type” as the variables so you often 
> see (if this were a byte array)
Assuming the flag variable uses data type = bytes,
flag_values needs to be an actual byte array, not just a String that 
looks like it.
I don't know what library/system you are working with, so I'm not sure 
how you will specify that.

>
>
>>    <attribute name="flag_values" value="0b, 1b, 2b”/>
>
> On May 23, 2014, at 10:18 AM, Anna Milan - NOAA Federal via 
> Esip-documentation <esip-documentation at lists.esipfed.org 
> <mailto:esip-documentation at lists.esipfed.org>> wrote:
>
>> Update - added commas b/t flag_values
>>
>>     <attribute name="flag_values" value="0, 1, 2"/>
>>     <attribute name="flag_meanings" 
>> value="One_or_more_measurements_are_backfilled_from_the_spacecraft_recorder 
>> Packet_time_is_in_the_future Packet_time_is_older_than_the_threshold"/>
>>
>>
>> Anna
>> *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
>> Anna.Milan at noaa.gov <mailto:Anna.Milan at noaa.gov>, 303-497-5099
>> NOAA/NESDIS/NGDC
>>
>> http://www.ngdc.noaa.gov/metadata/emma
>> *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
>>
>>
>> On Fri, May 23, 2014 at 11:17 AM, Anna Milan - NOAA Federal 
>> <anna.milan at noaa.gov <mailto:anna.milan at noaa.gov>> wrote:
>>
>>     Ok.
>>     Thanks for all of your feedback! Does this look more compliant?
>>
>>     <attribute name="flag_values" value="0 1 2"/>
>>         <attribute name="flag_meanings"
>>     value="One_or_more_measurements_are_backfilled_from_the_spacecraft_recorder
>>     Packet_time_is_in_the_future
>>     Packet_time_is_older_than_the_threshold"/>
>>
>>     Anna
>>     *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
>>     Anna.Milan at noaa.gov <mailto:Anna.Milan at noaa.gov>, 303-497-5099
>>     <tel:303-497-5099>
>>     NOAA/NESDIS/NGDC
>>
>>     http://www.ngdc.noaa.gov/metadata/emma
>>     *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
>>
>>
>>     On Fri, May 23, 2014 at 11:09 AM, Bob Simons - NOAA Federal via
>>     Esip-documentation <esip-documentation at lists.esipfed.org
>>     <mailto:esip-documentation at lists.esipfed.org>> wrote:
>>
>>
>>         On 2014-05-23 9:45 AM, Anna Milan - NOAA Federal via
>>         Esip-documentation wrote:
>>>         Howdy All,
>>>         Is this the most appropriate way to describe flag_values,
>>>         flag_meanings?
>>>
>>>         <attribute name="flag_values" value="0, 1, 2, 3, 4, 5, 6, 7"/>
>>>           <attribute name="flag_meanings" value="One or more
>>>         measurements are back filled from the spacecraft recorder,
>>>         Packet time is in the future, Packet time is older than the
>>>         threshold"/>
>>
>>         Not exactly.
>>         The flag_values (and the flag variable) are usually an array
>>         of bytes, not a comma separated string.
>>         The flag_meanings need to be something like
>>         "One_or_more_measurements_are_back_filled_from_the_spacecraft_recorder
>>         Packet_time_is_in_the_future
>>         Packet_time_is_older_than_the_threshold".
>>         The number of flag_values must equal the number of flag_meanings.
>>
>>         Those are terms from the CF standard. See
>>         http://cfconventions.org/1.6.html#flags for details.
>>
>>         It might be better to direct future questions about them to
>>         the CF mailing list.
>>
>>>         Thanks in advance....
>>>         Anna
>>>         *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
>>>         Anna.Milan at noaa.gov <mailto:Anna.Milan at noaa.gov>,
>>>         303-497-5099 <tel:303-497-5099>
>>>         NOAA/NESDIS/NGDC
>>>
>>>         http://www.ngdc.noaa.gov/metadata/emma
>>>         *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*
>>>
>>>
>>>         _______________________________________________
>>>         Esip-documentation mailing list
>>>         Esip-documentation at lists.esipfed.org  <mailto:Esip-documentation at lists.esipfed.org>
>>>         http://www.lists.esipfed.org/mailman/listinfo/esip-documentation
>>
>>         -- 
>>         Sincerely,
>>
>>         Bob Simons
>>         IT Specialist
>>         Environmental Research Division
>>         NOAA Southwest Fisheries Science Center
>>         1352 Lighthouse Ave
>>         Pacific Grove, CA 93950-2079
>>         Phone: (831)658-3205 <tel:%28831%29658-3205>
>>         Fax: (831)648-8440 <tel:%28831%29648-8440>
>>         Email: bob.simons at noaa.gov <mailto:bob.simons at noaa.gov>
>>
>>         The contents of this message are mine personally and
>>         do not necessarily reflect any position of the
>>         Government or the National Oceanic and Atmospheric
>>         Administration.
>>         <>< <>< <>< <>< <>< <>< <>< <>< <>< <><
>>
>>
>>         _______________________________________________
>>         Esip-documentation mailing list
>>         Esip-documentation at lists.esipfed.org
>>         <mailto:Esip-documentation at lists.esipfed.org>
>>         http://www.lists.esipfed.org/mailman/listinfo/esip-documentation
>>
>>
>>
>> _______________________________________________
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>
> -ed
>
> Ed Armstrong
> JPL Physical Oceanography DAAC
> 818 519-7607
>
>
>

-- 
Sincerely,

Bob Simons
IT Specialist
Environmental Research Division
NOAA Southwest Fisheries Science Center
1352 Lighthouse Ave
Pacific Grove, CA 93950-2079
Phone: (831)658-3205
Fax: (831)648-8440
Email: bob.simons at noaa.gov

The contents of this message are mine personally and
do not necessarily reflect any position of the
Government or the National Oceanic and Atmospheric
Administration.
<>< <>< <>< <>< <>< <>< <>< <>< <>< <><

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