Jonathan,
> Should we put a general convention in CF that text attributes can only
> contain US ASCII characters? I think that would avoid some problems.
However it would also appear to place a new restriction on variable (and
dimension) names that is not currently in CF, namely that only US ASC
Dear all
I agree with John that
> spelling out the unit should be best practice
but in real practice people will not always do this, and therefore we should
provide CF versions of the udunits-2 xml files that define u as micro. We
need to provide CF versions anyway to add some non-standard units,
Eizi TOYODA wrote:
Hi all,
Nobody here is trying to discourage the use of micro sign. What
character encoding are you going to use?
Micro sign (http://www.fileformat.info/info/unicode/char/00b5/index.htm)
is single byte 0xB5 in Latin-1 (aka ISO-8859-1) but becomes
double-byte 0xC2 0xB5 in UTF-8
On
Behalf Of Eizi TOYODA [toy...@gfd-dennou.org]
Sent: 27 March 2010 00:49
To: Andrew Clegg
Cc: cf-metadata@cgd.ucar.edu; Julien Demaria
Subject: Re: [CF-metadata] Units micro prefix "u" deprecated in udunits-2
Hi all,
Nobody here is trying to discourage the use of micro sign. What
charact
Hi all,
Nobody here is trying to discourage the use of micro sign. What
character encoding are you going to use?
Micro sign (http://www.fileformat.info/info/unicode/char/00b5/index.htm)
is single byte 0xB5 in Latin-1 (aka ISO-8859-1) but becomes
double-byte 0xC2 0xB5 in UTF-8. There is also conf
Karl,
As a scientist, you should use "pascal". I note that one
microatmosphere is about one tenth of one pascal.
"microatm" mixes a word (micro) with a symbol (atm). In general, this
is not a good idea. The official guidelines from the NIST recommend
against it, for example, and so do I (
Hi,
Just to let you know, I've added "u" to the UDUNITS-2 prefix database as
a symbol for "micro" to make UDUNITS-2 more backward-compatible with
UDUNITS (alias UDUNITS-1). This addition will be in the next release.
It's still a good idea, however, to use unit names (which are case
insensit
Hi Karl,
udunits 1 and 2 both recognise 'microatm' as '0.101325 m⁻¹·kg·s⁻²'.
You may be better off using 'microatmospheres', to be consistent between
using abbreviations and full names. ('microatmospheres' is recognised by
both udunits 1 & 2). Again, this is the sort of thing that it would be
Hi all,
Should I use microatm instead of uatm for a pressure unit in the CMIP5
requested output list? Apparently this is the preferred unit for
partial pressure of CO2 in seawater.
Will the latest versions of udunits recognize it?
thanks for any guidance,
Karl
On 26-Mar-10 8:52 AM, Andrew
Hi Julien,
I'm glad you brought this up. We had a discussion about this recently
(look for any threads with 'udunits 1 or 2 for CF' in the title):
http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2010/thread.html
The best solution (in my opinion) was to use expanded names rather than
shor
Hi,
I found the "u" micro prefix abbreviation in the current CF-1.4
documentation on units:
http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.4/cf-conventions.html#units
but it seems this prefix is not available in the last udunits-2
(udunits-1 is now deprecated)
and in udunits-2 they bre
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