Terrain elevation prequel (Water Overlay): Difference between revisions

From Tygron Support wiki
Jump to navigation Jump to search
No edit summary
No edit summary
Line 11: Line 11:
This prequel serves as a replacement for the DTM, which is the elevation model without the [[Building]]s. The [[Water Overlay]] will still add the heights of any [[Building]]s present, in accordance with the set [[design flood elevation m (Water Overlay)|DESIGN_FLOOD_ELEVATION M]].
This prequel serves as a replacement for the DTM, which is the elevation model without the [[Building]]s. The [[Water Overlay]] will still add the heights of any [[Building]]s present, in accordance with the set [[design flood elevation m (Water Overlay)|DESIGN_FLOOD_ELEVATION M]].


Note: This prequel Overlay must be set to [[How to set an Overlay to active or inactive|inactive]] in order to function properly!


{{article end
{{article end
|notes=* The values in this prequel grid are clamped between -10000.0 and 10000.0. No data values are not allowed.
|notes=* '''IMPORTANT''': This prequel Overlay must be set to [[How to set an Overlay to active or inactive|inactive]] in order to function properly!
* The values in this prequel grid are clamped between -10000.0 and 10000.0. No data values are not allowed.
* Any [[Grid Overlay]] used as input for this [[prequel]] should cover the [[project area]] completely, without any {{nodata}} values. If the dataset used does contain {{nodata}} values, it is prudent to use a [[Combo Overlay]] or an [[Average Overlay]] to fill up any {{nodata}} values, and use that [[Grid Overlay]] as input for this [[prequel]] instead.
* Any [[Grid Overlay]] used as input for this [[prequel]] should cover the [[project area]] completely, without any {{nodata}} values. If the dataset used does contain {{nodata}} values, it is prudent to use a [[Combo Overlay]] or an [[Average Overlay]] to fill up any {{nodata}} values, and use that [[Grid Overlay]] as input for this [[prequel]] instead.
|seealso=
|seealso=

Revision as of 16:48, 5 March 2024


This prequel serves as a replacement for the DTM, which is the elevation model without the Buildings. The Water Overlay will still add the heights of any Buildings present, in accordance with the set DESIGN_FLOOD_ELEVATION M.


Notes

  • IMPORTANT: This prequel Overlay must be set to inactive in order to function properly!
  • The values in this prequel grid are clamped between -10000.0 and 10000.0. No data values are not allowed.
  • Any Grid Overlay used as input for this prequel should cover the project area completely, without any NO_DATA values. If the dataset used does contain NO_DATA values, it is prudent to use a Combo Overlay or an Average Overlay to fill up any NO_DATA values, and use that Grid Overlay as input for this prequel instead.

See also