Apologies if this has been answered before or if it is documented, but for the life of me I couldn;t find any information in the forums, nor can I work out how to find the attributes (meta data) associated with S57 records.
I can open and successfully parse a S57 data set such as a NOAA ENC Nautical Chart.
The Ogr provider reveals 5 layers; DSID, Area, Line, Point & Metadata.
The DSID layer contains values for the data set such as the DSID_DSNM (the data set name), DSID_EDTN (edition) etc.
Similarly the Area, Line & Point layers contain the geometery values and S57 information such as RCID (record ID), OBJL (object class) and I can render these layers onto the map.
However I don't know where to find the metadata that describes the Area, Line & Point records.
For example a point record may have an OBJL value of 5 which indicates that the point is a Cardinal Mark. Somewhere in the S57 data set will be correlating attributes such as BCNSHP (2) whose value describes the shape of the beacon or CATCAM (13) which
describes the category of the cardinal mark (north, south, east west).
Any pointers would be gratefully appreciated.