Tutorial M10 001 GIS Inputs QGIS: Difference between revisions
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<li>Click 'OK' and save the QGIS workspace by selecting Project > Save As.<br>
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[[File:
<li>Set the QGIS workspace projection to EPSG:32760, see <u>[https://wiki.tuflow.com/index.php?title=Tutorial_Site_Familiarisation_QGIS#Set_the_Projection Set the Projection]</u>.
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= Method =
Navigate to the '''Module_10\Tutorial_Data''' folder. Copy the below GIS files into the '''Module_10\TUFLOW\model\gis''' folder:
:*'''2d_zsh_M10_damwall_001_L'''
:*'''2d_vzsh_M10_dambreak_001_R'''
:*'''2d_iwl_M10_001_R'''
:*'''2d_sa_M10_inflow_001_R'''
Investigate the supplied files:
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:*Select Layer > Add layer > Add Vector Layer and navigate to the '''Module_10\TUFLOW\model\gis''' folder. <br>
<li>The 2d_zsh line layer represents the dam wall:
:*A ‘Z’ attribute of 65 is specified, the elevations are set to
:*The line has the same Shape_Width as the cell size, this is a thick breakline modifying whole cells.
<br>
{{Video|name=Animation_M10_001_GIS_01a.mp4|width=1238}}<br>
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<li>The 2d_vzsh polygon layer represents the location of the dam break:
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:*Trigger_Value sets the simulation time in hours that the dam break is to commence. A value of 1 indicates the dam break begins at 1 hour.
:*Period sets the time in hours over which the change in elevation occurs. A value of 0.25 sets a period of 15 minutes replicating the break.
For more information,
<br>
{{Video|name=Animation_M10_001_GIS_02.mp4|width=1238}}<br>
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<li>The 2d_iwl polygon layer represents the initial water level of the dam as 59m at all cells within the polygon.
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{{Video|name=Animation_M10_001_GIS_03.mp4|width=1238}}<br>
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<li>The 2d_sa layer replaces the 2d_bc QT type introduced in <u>[[Tutorial_M01 | Module 1]]</u>. A 2d_sa inflow is typically more stable in situations of fast model changes, for example, dam breaks. <br>
<li>Select the '''2d_sa_M10_inflow_001_R''' in the Layers panel and use the 'Apply TUFLOW Styles to Current Layer' tool.<br>
<br>
{{Video|name=Animation_M10_001_GIS_04.mp4|width=1238}}<br>
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Increment the 2d_bc layer from
<ol><li>Navigate to the '''Module_10\model\gis''' folder and open the '''2d_bc_M01_001_L.shp''' in QGIS.
<li>Select the '''2d_bc_M01_001_L''' layer in the Layers panel.
<li>Use the 'Apply TUFLOW Styles to Current Layer' tool.
<li>Click on the ‘Increment Selected Layer’ symbol from the TUFLOW Plugin toolbar.
<li>Update the 'Output Layer Name' to '''2d_bc_M10_001_L.shp'''.
<li>Click 'OK'.<br>
<li>The tool removes the source layer from the Layers panel and the '''2d_bc_M10_001_L''' appears.
<li>Right click on the '''2d_bc_M10_001_L''' layer to toggle on Editing.
<li>Zoom
<li>Click 'OK' and turn off editing to save the edits.<br>
<br>
{{Video|name=Animation_M10_001_GIS_05.mp4|width=1238}}<br>
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