FM Tute M01 QGIS 1D2D Banks: Difference between revisions
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<li>Open the <b>1D_2D_Points_P.shp</b> GIS layer from Module_Data\Module_01\gis folder. Select all objects from within this layer, copy and paste into <b>2d_bc_hxi_FMT_001_P.shp</b>. </li>
<li>Interrogate one of the digitised points and inspect the attributes. The ‘type’ attribute is ‘ZP’ to denote that it is a z-point which will define the elevation on the banks. The ‘f’ attribute is the elevation of the bank link in mAOD. </li>
<li>Now add the layer <b>2d_bc_FMT_M01_HX_001_L.SHP</b> from the '''FMT_tutorial\FMT_M01\TUFLOW\model\gis''' folder created in the previous step. Note that all the 'ZP' points created in the layer <b>2d_bc_FMT_HX_001_P.SHP</b> are snapped to vertices of the layer <b>2d_bc_FMT_M01_HX_001_L.SHP</b>. This is because these two layers work together to define the bank locations and crest elevations. The layer <b>2d_bc_FMT_M01_HX_001_L.SHP</b> defines the location and the layer <b>2d_bc_FMT_HX_001_P.SHP</b> defines the elevations.
<li>Save the file.</li>▼
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[[File:FMT_1D2D_Banks.JPG|600px]]
▲<li>Save the file.</li>
<div style="background-color: #D6E9E0; margin: 20px; text-align: center;
border: 5px solid #1ABDC9">
<p style="font-weight: bold; color: #E20177">Key Tip!</p>
<p> The bank (1D/2D boundary) elevations may also be defined using a 2d_zsh layer or other 3D breakline layer. The advantage of using a 2d_bc layer is it ensures only boundary cell elevations are raised and not that of adjacent cells. </p>
</div>
Please return to the [[Flood_Modeller_Tutorial_Module01#Deactivate_2D_cells|Flood Modeller Tutorial Model]].
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