When a product is exported to an S-57 file, you must indicate which features are Group 1 (skin-of-the-earth) and which features are Group 2 (non-skin-of-the-earth). The Group table defines the two groups.
This is an example of a group table for an ENC:
<?xml version="1.0" encoding="UTF-8" ?> |
|
<GroupLookupTable version="1.0" title="ENC Group Lookup Table"> |
<group value="1"> |
<object acronym="DEPARE" primitive="A" /> |
<object acronym="DRGARE" primitive="A" /> |
<object acronym="FLODOC" primitive="A" /> |
<object acronym="HULKES" primitive="A" /> |
<object acronym="LNDARE" primitive="A" /> |
<object acronym="PONTON" primitive="A" /> |
<object acronym="UNSARE" primitive="A" /> |
</group> |
<group value="2"> |
<object acronym="*" primitive="*" /> |
</group> |
</GroupLookupTable> |
In this example, seven features are declared as Group 1, according to the ENC specification. All other features are considered Group 2.
All S-57 group tables are stored in C:\Program Files\CARIS\HPD\<version>\system\S57Config\system.
Since the example MIO contains no Group 1 features, all features by default are Group 2.
This XML file can be used as a group table for the MIO product:
<?xml version="1.0" encoding="UTF-8" ?> |
<GroupLookupTable version="1.0" title="MIO Group Lookup Table"> |
<group value="2"> |
<object acronym="*" primitive="*" /> |
</group> |
</GroupLookupTable> |
Each product must have its own group table so the above file must be saved as separate file.