[gdal-dev] Support for S-100 and S-102

[kusala nine]

The biggest work item for S-100 compatibility would be an update to the
GDAL/OGR drivers for iso8211 in order to parse the S-101 iso8211 encoding.
S-101 is the candidate replacement for S-57 ENC data - so, at some point
all of NOAA's S-57 marine data will be available as S-101 datasets too.
There's various improvements in S-101 over the old S-57 standard including
dynamic feature catalogues and complex attributes on features but the main
issue is that the iso8211 encoding uses concatenated iso8211 data
structures (where you can have repeated field/subfields concatenated with
simple (i.e non-repeating ones)). The current GDAL I believe doesn't parse
these correctly so can't be used to parse S-101 data. I am invovled with
the IHO team developing the standard but the main data format/spec and
encoding are all pretty much done and there are converters/datasets
available if anyone is able to take on the work - not sure if there's NOAA
funding for it? It would be a huge step forward in the rollout to have an
open source parser for this data....

Jonathan.

On 29 August 2018 at 20:41, Even Rouault <even.rouault at spatialys.com> wrote:

> All,
>
> I've committed in GDAL master various improvements in the BAG driver,
> around
> two main directions:
> - read support for variable resolution BAG, with resampling and
> interpolation
> options
> - creating of (single resolution) BAG files from other GDAL datasets
>
> Updated documentation available at https://gdal.org/frmt_bag.html
>
> This work has been made possible through NOAA funding.
>
> Best regards,
>
> Even
>
>
> > I'd be happy to connect anyone with the folks at NOAA, CCOM-JHC, and
> > elsewhere who have been participating in drafting S-10x.  I only sat in
> on
> > a few of the meetings long ago.
> >
> > Specs should eventually end up here...
> > https://www.iho.int/iho_pubs/IHO_Download.htm#S-100
> >
> > On Thu, Jul 5, 2018 at 10:43 AM, Even Rouault <
> even.rouault at spatialys.com>
> >
> > wrote:
> > > Kelly,
> > >
> > > > I know GDAL/OGR supports S-57 format, but could not see where it
> > > > supports
> > > > S-100.
> > > >
> > > > Is there a plan to support the latest IHO S-100 and S-102 standards
> in
> > >
> > > the
> > >
> > > > near future?
> > >
> > > I'm not aware of anyone working on that currently.
> > >
> > > I had difficulties finding concrete documentation about those standards
> > > (specification and test products). From my quick search, it looks like
> :
> > > - S-100 is a conceptual model,
> > > - S-101 is for ENC encoding, a successor of S-57. Apparently still
> using
> > > ISO-8211 for low level encoding.
> > > - S-102 is bathymetric grid encoding in GeoTIFF or in BAG. So should be
> > > already handled by GDAL
> > >
> > > Even
> > >
> > > --
> > > Spatialys - Geospatial professional services
> > > http://www.spatialys.com
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>
>
> --
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> http://www.spatialys.com
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