On Thu, Sep 20, 2018 at 8:17 AM Andrea Aime <[email protected]>
wrote:

> The specification says that in WCS 2.0 a dateline crossing request must be
> expressed with the two longitudes within valid range,
> and in inverted position, e.g.:
>

Actually searched the WCS 2.0 spec, it does not contain the sentence I
remembered, the WCS 1.1 does:

"In a geographic CRS, longitude values are often defined with a finite
extent (e.g., from -180
degrees to +180 degrees). The minimum and maximum longitude limits define a
single line
(on the ellipsoid, sphere, or cylinder), known as the antimeridian, across
which longitude
values are discontinuous: as this line is crossed, longitude changes
abruptly (e.g., going West
 from a little more than -180 degrees to a little less than +180 degrees).
This necessitates an
“extended” interpretation of the Bounding Box definition:

A Bounding Box defined in a geographic CRS (or a WGS84BoundingBox)
whose LowerCorner longitude is greater than that of its UpperCorner shall
describe a region that crosses the longitude discontinuity."

The commit that introduced the current behavior, 4 years ago, indeed refers
to borrowing it from the
previous specs:

https://osgeo-org.atlassian.net/browse/GEOS-6622

I've inquired on the WCS 2.0 SWG about it, will let you know.

Cheers
Andrea

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