Ian,
I suggest filing a request with Udunits support to restore "bits" as
a valid unit in Udunits-2. It was probably dropped by accident.
All unit strings from Udunits-1 should be inherited, with very
limited and documented exceptions.
http://www.unidata.ucar.edu/software/udunits/udunits-2/udunits2.html#Differences
--Dave
On 9/27/2011 5:08 AM, Culverwell, Ian wrote:
*Hi Ros,*
**
*Many thanks - that's pretty clear.*
**
*I agree about the CF documentation - "udunits.dat" peppered all
over the place. *
**
*We'll use a unit of '1' instead (our application need**s each
variable to have a unit, even if CF doesn't!).*
**
*Best Regards,*
*Ian.*
**
--------------------------------------------------------------------
*From:* Rosalyn Hatcher [mailto:[email protected]]
*Sent:* 27 September 2011 11:43
*To:* Culverwell, Ian
*Cc:* [email protected]
*Subject:* Re: [CF-metadata] Is the "bits" unit CF-compliant?
Hi Ian,
The CF Checker using UDUNITS-2 to validate the units.
This is another one of those units where UDUNITS-1 deemed it valid
and UDUNITS-2 says it's invalid.
I think the CF Document should be updated to specify validation
against UDUNITS-2 and also to remove the reference to the
udunits.dat file as this no longer exists at UDUNITS-2, instead xml
files are used.
Regards,
Ros.
On 26/09/11 12:10, Culverwell, Ian wrote:
**
*Sorry, didn't quite finish.*
**
*... it says:*
**
*ERROR (3.1): Invalid units: bits*
**
*So: is "bits" (or "bit") CF-compliant or not?*
**
*Thanks for any help,*
*Ian.*
**
**
******
--------------------------------------------------------------------
*From:* Culverwell, Ian
*Sent:* 26 September 2011 12:09
*To:* [email protected]
*Cc:* Culverwell, Ian
*Subject:* Is the "bits" unit CF-compliant?
*Hello,*
**
*The latest CF-compliance document suggests that we should look to
the udunits.dat file in the udunits package to find out if a
certain unit is CF-compliant. The latest version of udunits.dat I
have lists*
**
*bit P count*
**
*as an acceptable unit. Yet when I run a file with this unit
through the CF-compliance checker, it says:*
**
**
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