Hi Frank, > I know lots of people have made various levels of effort > in > following the S52 specification based on OGR as a feature > reader. Perhaps some of them will speak up and > volunteer > additional information. >
Here's info I send to Randy. It's border line related to OGR/S57 but googler might find this useful: Old IHO's S-52 Manual at 'the Wayback Machine': http://web.archive.org/web/20030323010814/http://www.iho.shom.fr/general/ecdis/pslb03_2.pdf This manual explain how to link OGR/S-57 to S-52 for rendering. Note that the audience is ECDIS manufacturer. Note also that is old stuff. Finally note that this whole S-57/S-52 is about to be replace by S-100/S-101, an extended and XML'ised version aligned on 0GC/ISO. If all you want is color then you can find decent RGB for recent S-52 color palette by Googling. XML'ing S-57/S-52 is just an other way to serialize ENC data. There is provision in S-100/S-101 to embed GeoTIFF (for bathymetric stuff) also. So, to GDAL/OGR this new stuff is not that alien. rgds, Sylvain. --- On Tue, 9/1/09, Frank Warmerdam <[email protected]> wrote: > From: Frank Warmerdam <[email protected]> > Subject: Re: [gdal-dev] OGR about s_57 > To: "Randy" <[email protected]> > Cc: "GDAL/OGR mailing list" <[email protected]> > Received: Tuesday, September 1, 2009, 9:46 PM > Randy wrote: > > Hi, everyone, > > > > I’m now interesting in displaying > ENCs. > > > > I know the OGR can support the s57 format > files and it can get some > > data like point、line、polygon. But it cannot > support the styles as Mr > > Frank Warmerdam told me. Now, I have such questions: > > > > 1. Where can I know > what OGR does support and does not support > > about s57 ? Does it get the symbols(no, right?)? > > Randy, > > OGR does not read the actual graphical symbols. For > instance, > we might have a feature from the WRECKS layer like below > with > various valuable attributes, but actual wreck symbol. > > OGRFeature(WRECKS):2163 > RCID (Integer) = 2164 > PRIM (Integer) = 1 > GRUP (Integer) = 2 > OBJL (Integer) = 159 > RVER (Integer) = 1 > AGEN (Integer) = 540 > FIDN (Integer) = 2135161787 > FIDS (Integer) = 688 > LNAM (String) = 021C7F43FBBB02B0 > NAME_RCNM (IntegerList) = (1:110) > NAME_RCID (IntegerList) = (1:517) > ORNT (IntegerList) = (1:255) > USAG (IntegerList) = (1:255) > MASK (IntegerList) = (1:255) > CATWRK (Integer) = 1 > QUASOU (String) = 2 > WATLEV (Integer) = 3 > POINT (61.1031909 -32.4450159) > > > 2. If I have got the > color and symbols, How could I know which > > kind of color the line(or polygon or something else > which I get with the > > help of OGR) should match with? > > You would normally read the S52 specification and use it > to > determine appropriate coloring, styling and symbolization > from the attributes of a feature. I > haven't actually reviewed > the S52 specification, but I imagine it has rules for how > to draw wrecks that might indicate different symbols > depending > on the CATWRK (Category of Wreck) and WATLEV (Water level > effect) attributes of the feature. > > > 3. Has anyone done such > things, can you help me something? > > I know lots of people have made various levels of effort > in > following the S52 specification based on OGR as a feature > reader. Perhaps some of them will speak up and > volunteer > additional information. > > > 4. I know the file > “IHO ECDIS Presentation Library” can help me > > but I don’t know how to get it, can you? > > Normally the IHO web site should have instructions on > ordering. > > Best regards, > -- > ---------------------------------------+-------------------------------------- > I set the clouds in motion - turn up | > Frank Warmerdam, [email protected] > light and sound - activate the windows | http://pobox.com/~warmerdam > and watch the world go round - Rush | > Geospatial Programmer for Rent > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > __________________________________________________________________ Looking for the perfect gift? Give the gift of Flickr! http://www.flickr.com/gift/ _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
