I was unaware of the _Unsigned attribute. I was always confused by the
language around setting the ranges to the expected unsigned range. Until
this discussion I wasn't really sure what that was about. Having used
unsigned types, now I'm beginning to wonder if the data we've created
should be changed. If I understand Charlie correctly, then I agree with
him: I think _Unsigned = true is clearer. I think requiring both is
burdensome and allowing one or the other is crufty. (What a great word.)
Mary Jo
On Fri, 22 Sep 2017, Charlie Zender wrote:
Date: Fri, 22 Sep 2017 09:40:53 -0700
From: Charlie Zender <[email protected]>
To: "Signell, Richard" <[email protected]>,
Chris Barker <[email protected]>
Cc: CF Metadata Mail List <[email protected]>
Subject: Re: [CF-metadata] Add new integer types to CF?
_Unsigned = "true" is cleaner and clearer to me
than the valid_* attributes.
To me, Rich's suggestion requires a consensus
to _drop_ valid_* in CF 1.8, and instead make
_Unsigned the preferred workaround for file formats
that do not support unsigned types.
Unless people want to require _both_
_Unsigned and valid_* (seems burdensome to me),
or allow either _Unsigned or valid_* (seems
crufty to me). What do others think?
On 9/22/17 04:49, Signell, Richard wrote:
lookin at the NUG, how about saying:
In file types that don't offer native support for unsigned types,
integer or byte variables that are to be interpreted as unsigned must
have the attribute _Unsigned = "true".
--
Charlie Zender, Earth System Sci. & Computer Sci.
University of California, Irvine 949-891-2429 )'(
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