Re: [CF-metadata] 2. Re: [cf-satellite] Sharing quality flags among multiple variables (Jonathan Gregory)

2011-11-21 Thread Schultz, Martin
Dear Jonathan, while it makes sense what you say, the lines are somewhat blurred and this is the philosophical fabric which makes it sometimes hard to communicate the usefulness of CF to others. It may be about time to begin thinking about CF-2.0 and initiate a discussion which should

Re: [CF-metadata] 2. Re: [cf-satellite] Sharing quality flags among multiple variables (Jonathan Gregory)

2011-11-21 Thread Jonathan Gregory
Dear Martin I am sure that most things could be done differently and many of them could be done better, but we have to recognise that few people have much time to spend on defining the CF standard, because it's a community effort with very little devoted resource. We can certainly consider ways

Re: [CF-metadata] Proposed addition to CF principles: outside conventions

2011-11-21 Thread Russ Rew
Hi Jonathan, I agree with these principles. I think we might phrase 3 and 4 as balanced alternatives: CF may incorporate an outside convention into it when the following conditions hold: 1. The semantics of the convention are important to the CF community. 2. The convention is

Re: [CF-metadata] Question on WKT representation of CRS

2011-11-21 Thread Etienne Tourigny
Here is an example of a projection (modis sinusoidal) that is not supported by CF: PROJCS[unnamed, GEOGCS[Unknown datum based upon the custom spheroid, DATUM[Not_specified_based_on_custom_spheroid, SPHEROID[Custom spheroid,6371007.181,0]], PRIMEM[Greenwich,0],

Re: [CF-metadata] Question on WKT representation of CRS

2011-11-21 Thread Etienne Tourigny
Here is an example of a lon/lat definition (no PROJCS) with TOWGS84 EPSG code 4618 (SAD69 datum used in South America) OGC WKT : GEOGCS[SAD69, DATUM[South_American_Datum_1969, SPHEROID[GRS 1967 Modified,6378160,298.25, AUTHORITY[EPSG,7050]],

[CF-metadata] Fwd: Re: Proposed addition to CF principles: outside conventions

2011-11-21 Thread John Caron
Original Message Subject: Re: [CF-metadata] Proposed addition to CF principles: outside conventions Date: Mon, 21 Nov 2011 14:39:13 -0700 From: Seth McGinnis mcgin...@ucar.edu To: John Caron ca...@unidata.ucar.edu Hi John, I'm generally in favor of this