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Posted by Jacquelin Hardy on April 23, 2005, 9:30 pm
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Hi Flukes,
the S57 format is baseD on ISO8211 format. You need the following :
IHO Transfer Standard for Digital Hydrographic Data, Edition 3.1, November
2000 - Main Document (31Main.pdf)
About 30 pages. Rough to understand . Once you go thru this, you can start
doing your thing. You<ll first figure out that an S57 file is made of
spatial data ( lat & long) and of feature data, ie. the characteristics of
the points, lines and faces displayed in S52 format.
Because S57 files are displayed with S52 rules. But this will come later
Jacquelin Hardy
pan.2005.04.17.11.37.33.580825@sympatico.ca...
> I need to build an application that displays electronic navigation chart
> vector format (enc) digital charts.
>
> OGR, the vector format portion of GDAL, reads the format.
>
> An enc chart is organized into layers, features, and fields.
>
> I need something that parses the data and identifies what is what.
>
> Once I know that LAYER BOYLAT, FEATURE 19, FIELD 11 with a value of 107
> represents a RED structural lateral aid (bouy), I can draw the correct
> symbol.
>
> I need to parse the enc data.
>
> Anything code around that can help?
>
> Is anyone aware of any reference code for enc?
> (like libtiff is for tiff or libjpeg is for jpeg)
>
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