A SEF Graphical Feature Reference is the graphical portion of the SEF Reference Feature and is not a stand-alone feature. When a graphical component is added as part of the SEF Reference feature, that component will automatically becomes a graphical feature reference. There is no need to explicitly indicate that a feature is a graphical feature reference.
If it is the case that there are multiple components within a graphical feature reference, these components have to further aggregated together. For example, if a graphical feature reference contains a text component and a complex string with subtype line and curve, the complex string (which is an aggregate already) should be aggregated together with the text component to form the graphical feature reference.
This feature reference has the same structure as a SEF Component but with the addition of the following attributes:
|
Attribute |
Value |
Required/Optional |
|---|---|---|
|
sef_dgn |
The name of the design file which is the source of the feature data. |
Optional |
|
sef_map |
Represents the map sheet ID of the map which is the source of the feature data. |
Optional |
|
sef_transaction {<number>} |
The transaction type of the feature. Note that <number> is an integer which starts from 0 to indicate the order of the feature states. ADD and EDIT are for first transaction only, where as the rest are for any additional transactions. Range:
Default: No default |
Optional |
|
sef_rbprmry |
Represents the feature's graphic identifier. |
Optional |
|
sef_rbscndry |
Represents the feature's UFID. |
Optional |
|
sef_segment |
Represents the segment name of the feature. |
Optional |
|
sef_tsetid |
This is the ID which is used to group main features and reference features. |
Optional |
|
sef_mrflag |
This is used to identify which main feature is associated with a reference feature. |
Optional |
|
sef_dgntype |
An integer that specifies whether the feature is a GEO or DETAIL feature. Range: 1 (GEO) | 2 (DETAIL) Default: No default |
Optional |