Polygon Data Fields (SWMM)
Polygon data can be edited on the Polygons Grid Window of the Polygons Grid or the Polygon Property Sheet.
The following table describes all the data required to define a polygon.
Fields that are common to the majority of objects can be found in the Common Fields topic.
Polygon Data
Database Table Name: sw_polygon
Field Name |
Help Text |
Database Field |
Size |
Precision |
Default |
Error Lower Limit |
Error Upper Limit |
Warning Lower Limit |
Warning Upper Limit |
||
---|---|---|---|---|---|---|---|---|---|---|---|
ID |
The unique name of the polygon. |
polygon_id |
Text |
254 |
|
0 |
|
|
|
|
|
Category |
A polygon may be associated with a polygon category. Polygon categories can be used to group sets of polygons in the network. They can be used to:
|
category_id |
Text |
254 |
|
0 |
|
|
|
|
|
Area |
Polygon area. Default value calculated from polygon geometry. |
area |
Double |
|
CA |
3 |
|
|
|
|
|