SCALGO Live Documentation

Workspaces: Editing

Workspaces let you change the terrain model and observe the effects on flood risk analysis. You access the edit tool through the following steps:

  1. Select the toolbox icon for the workspace you want to recompute. For information on creating a workspace, refer to the creation page.
  2. Select Edit terrain.

This brings up a range of different tools for editing the terrain:

Interpolate path

Interpolates linearly between the terrain elevation at the first and last point of the path.

Usage example: Cut through obstructions in the terrain, build bridges.

Raise path

Interpolates linearly between the terrain elevation at the first and last point of the path, raising the path by a set height.

Usage example: Raise a wall that follows the terrain uphill or downhill.

Lower path

Interpolates linearly between the elevations of the first and last point of the path, lowering the path by a set height.

Usage example: Create a ditch or culvert that follows the terrain uphill or downhill.

Raise flat path or area

This tool supports a path as well as an area mode. The path mode creates a flat wall raised by a set height over the highest elevation of any of the vertices of the path. The area mode raises an area delineated by a polygon relative to the highest value along the boundary of the entire polygon.

Usage example: Create a flat dam or wall. In the area mode this can be used to create building outlines.

Lower flat path or area

This tool supports a path as well as an area mode. The path mode creates a flat path, lowered by a set height relative to the minimum elevation of any of the vertices of the path. The area mode lowers an area delineated by a polygon relative to the lowest elevation value along the entire boundary of the polygon.

Usage example: Create a flat culvert. In the area mode this can be used to create drainage basins.

Subsurface structure

Creates a subsurface structure between the two end points of the path. The edit does not change any elevation on the terrain, but it allows water to be transported between the end points without affecting the terrain between them. The subsurface structure will transport an unlimited amount of water, but it does not store any water itself – it has zero volume.

Usage example: Model culverts and underpasses without obstructing flow over the top of the structure.

Select

The select tool lets you select any of the features (paths and areas) in the workspace, once selected the position of any vertex of a feature can be changed interactively by dragging the vertex. New vertices can also easily be created by clicking anywhere on the feature. You can fine-tune the elevation of the vertices using the profile tool that is available through the selection dialog. For area features, the selection dialog will also display the volume of the raised part of the terrain.

The video below demonstrates the creation, editing and deletion of workspaces.

Demonstration of the workspace creation, editing and deletion.