Weir angle (Water Overlay)
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| Icon | Key | Unit | Range | Description | Default value |
|---|---|---|---|---|---|
 |
WEIR_ANGLE | geo angle (0-360°) | -1.7976931348623157E308 to 1.7976931348623157E308 | The top down orientation angle of the weir. | 0 |
The weir angle is used to convert a weir loaded in as point-based data to a line which is used in the simulation to define from where to where the water should flow across the weir. In the Water Wizard a weir angle is automatically generated. There are currently 4 options on how this is (automatically) generated:
- The weir is located on the edge of 2 water level areas. The weir is then automatically installed correctly and no message is displayed. Note that while weirs are automatically oriented, the waterways are not blocked, allowing water to flow past them. Therefore, it is recommended to use a dataset where the attribute is already present to ensure the block is in effect.
- The weir is located in exactly 1 level area. Then the warning appears that the weir has no angle, with the option to fix it.
- The weir is located in exactly 0 level areas. Then a comment is displayed about the absence of a water level area.
- The weir angle attribute is pre-added to a dataset and this dataset is imported into the project. No angle needs to be generated automatically.
Notes
- The width of the generated dam is equal to the weir's WEIR_WIDTH, multiplied by the WEIR_DAM_MULTIPLIER of the Water Overlay.
- If a weir angle is available for a weir which is already line-shaped, the weir is first interpreted as a point, and then the direction and elevation are adjusted accordingly. The centre of the weir's polygon is used.
- If no angle is available as an attribute, the angle weir angles are automatically oriented based on the water level areas.
- The weir angle is automatically converted to a range within 0 and 360.
