[CF-metadata] Question on WKT representation of CRS (Bentley, Philip)

From: Jonathan Gregory <j.m.gregory>
Date: Tue, 4 Oct 2011 15:28:15 +0100

Dear all

Patrick's example is useful.

> DATUM["Geocentric_Datum_of_Australia_1994",
> SPHEROID["GRS 1980",6378137,298.2572221010042,
> AUTHORITY["EPSG","7019"]],
> TOWGS84[0,0,0,0,0,0,0],
> AUTHORITY["EPSG","6283"]],
> PRIMEM["Greenwich",0],
> UNIT["degree",0.0174532925199433],
> AUTHORITY["EPSG","4283"]],
>
> whereas in CF-1 we can mainly only save the spheroid info:
> albers_conical_equal_area#semi_major_axis=6.37814e+06
> albers_conical_equal_area#inverse_flattening=298.257

The CF convention as it stands can say a lot less, but it does look more
self-explanatory to me! The meaning of the WKT is not clear to me. I'm quite
uneasy about importing a convention into CF which produces opaque metadata
like this, even though it is no doubt machine-readable.

Cheers

Jonathan
Received on Tue Oct 04 2011 - 08:28:15 BST