Revision as of 15:58, 15 June 2023

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Introduction

QGIS is used to create, import and view input data.

Setup the GeoPackage Database:

Navigate to the Module_10\TUFLOW\model\gis folder. Save a copy of M10_001.gpkg as M10_002.gpkg.

Increment the dambreak layer from Part 1 to change time trigger into water level trigger:

Navigate to M10_002.gpkg and open the 2d_vzsh_M10_dambreak_001_R in QGIS.
Select the 2d_vzsh_M10_dambreak_001_R layer in the Layers panel.
Click on the ‘Increment Selected Layer’ symbol from the TUFLOW Plugin toolbar.
The tool automatically renames the 2d_vzsh_M10_dambreak_001_R to 2d_vzsh_M10_dambreak_002_R. Ensure the 'Output Database' is M10_002.gpkg.
Select to remove the source layer from the workspace.
Click 'OK'.
The tool removes the source layer from the Layers panel and the 2d_vzsh_M10_dambreak_002_R appears:
Right click on the 2d_vzsh_M10_dambreak_002_R layer to toggle on Editing.
Click on the 'Identify Features' tool and click on the polygon.
Update the following attributes:
- Trigger_1: WL_Trigger
- Trigger_Value: 60
- Period: 0.5
Click 'OK' and turn off editing to save the edits.

Create a point to set the location of the water level trigger:

Click on the ‘Import Empty File’ symbol from the TUFLOW Plugin toolbar.
Select '2d_vzsh' from the Empty Type list.
In the Run ID box write 'M10_dambreak_002'.
Tick the 'Points' Geometry Type and hit 'OK'. The 2d_vzsh layer appears in the Layers panel.
Right click on the 2d_zsh_M10_dambreak_002_P and toggle on Editing.
Select 'Add Point Feature'.
Digitise a point within the dam upstream of the location of the dam break.
An attributes dialog displays, enter the following attributes:
- Shape_Option: TRIGGER
- Trigger_1: WL_Trigger
Click 'OK' and turn off editing to save the edits.

A 2d_vzsh region layer was modified to simulate a dambreak based on water level at specific point.
A 2d_vzsh point layer was created to set the location of the water level trigger.

Up
Back to Module 10 Main Page

@@ Line 7: / Line 7: @@
 = Method =
+Setup the GeoPackage Database:
+<ol>
+<li>Navigate to the '''Module_10\TUFLOW\model\gis''' folder. Save a copy of '''M10_001.gpkg''' as '''M10_002.gpkg'''.
+</ol>
 Increment the dambreak layer from Part 1 to change time trigger into water level trigger: <br>
 <ol>
-<li>Navigate to the '''Module_10\model\gis''' folder and open the '''2d_vzsh_M10_dambreak_001_R.shp''' in QGIS.
+<li>Navigate to '''M10_002.gpkg''' and open the '''2d_vzsh_M10_dambreak_001_R''' in QGIS.
 <li>Select the '''2d_vzsh_M10_dambreak_001_R''' layer in the Layers panel.
 <li>Click on the ‘Increment Selected Layer’ symbol from the TUFLOW Plugin toolbar.
-<li>The tool automatically renames the '''2d_vzsh_M10_dambreak_''001''_R''' to '''2d_vzsh_M10_dambreak_''002''_R'''.
+<li>The tool automatically renames the '''2d_vzsh_M10_dambreak_''001''_R''' to '''2d_vzsh_M10_dambreak_''002''_R'''. Ensure the 'Output Database' is '''M10_002.gpkg'''.
 <li>Select to remove the source layer from the workspace.
 <li>Click 'OK'.<br>