Re: [Geotools-devel] Coverages, pyramids WCS, raster WMS etc. etc. etc. etc.

[Martin D. <mar...@no...>]

Bryce L Nordgren a =E9crit :
> I would suggest, for the purposes of portably accessing CRS stored in i=
mage
> files, that we do exactly as Martin suggested but use "Recommended XML/=
GML
> 3.1.1 encoding of common CRS definitions" (OGC's 05-027r1).  It's
> specifically limited to "how to use GML 3.1.1 to encode CRS relevant to
> image transport."  In other words, it's exactly what we want, portable
> across file formats, and does not include a bunch of half-complete noti=
ons
> of things that might be nice.

I'm confortable with that (I have to admit that I just had a quick look=20
on those specifications). Note that we also need to encode the coverage=20
Envelope. We may take the relevant part from GML if needed.

I suspect that the most tedious task may be to implements a XML=20
parser/formatter for CRS. However, I'm not sure if this task is=20
unavoidable since IIOMetadataFormat can work with arbitrary Object (not=20
just String).


> Note that since Martin is talking about implementing an IIOMetadataForm=
at,
> we're really not discussing how the information is _stored_, but rather=
 how
> it is _communicated_ from the ImageIO plugin to Geotools.  For all we k=
now,
> the XML is just a beefed up world file accompanying any image...or extr=
a
> tags in a TIFF file...etc.

Exactly. Thanks for the clarification.

	Martin