[gdal-dev] S57 and area reconstruction

[Antti Castrén]

Hello Frits,

It is possible to (re)merge the objects across cell boundaries if they
share common Feature Object IDentifier (FOID), which is a combination
of AGEN, FIND and FINS subfields. Some ECDISes can hide the boundary
depending on masking. Usage of FOIDs vary, so it might be possible for
your datasets - if you are lucky.

See Clause 3.1 of Edition 2.0 (November 2000) of the ENC Product
Specification (S-57 Appendix B.1) and ENC Encoding Bulletin Number 33.

Cheers,

  Antti


2014-09-11 8:33 GMT+03:00 vwf <vwf at vulkor.net>:
> Hello,
>
> My question is about S57, not gdal, but one of you may be able to help
> me.
>
> When an area (like "prcare") is at the edge of a cell (map) there will
> be a vertex on the edge of the cel. With several cells the full area can
> have several lines going through the area. Is there a trick/technique to
> reconstruct the outer edge or remove the extra lines?
>
> Thank you,
> Frits
>
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-- 
Antti Castrén
+358505997538
antti.castren at iki.fi