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FM Tutorial M01 QGIS GPKG 1D2D Links: Difference between revisions

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=Method=
<li>Import in an empty <b>2d_bc_empty_L.gpkg</b> layer from within the '''FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty''' folder into the project GeoPackage file <b>M02_5m_002.gpkg</b>. Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L</b>. </li>
<li>Open the <b>1D_2D_HX_Links_L.shp</b> GIS layer from the '''Module_Data\Module_01\gis''' folder. Select all objects from within this layer, copy and paste into the layer <b>2d_bc_FMT_M01_HX_001_L </b>.</li>▼
<li>Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.gpkg</b> in the '''FMT_tutorial\FMT_M01\TUFLOW\model\gis''' folder.</li>
<li>Move the empty 2d_bc layer <b>2d_bc_FMT_M01_HX_001_L.gpkg</b> into the project GeoPackage file <b>M02_5m_002.gpkg</b> in the Browser Panel. Load the empty layer <b>2d_bc_FMT_M01_HX_001_L.gpkg</b> into QGIS from <b>M02_5m_002.gpkg</b>. </li>
▲<li>Open the <b>1D_2D_HX_Links_L.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_FMT_M01_HX_001_L </b>.</li>
<li>Interrogate one of the lines running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>
<li>Interrogate one of the lines connecting the x1D node to the HX line. These are the connection or ‘CN’ lines that read the water level from Flood Modeller and transfers this to the HX line. </li>
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[[File:FMT 1D-2D Linking QGIS.JPG|600px]]
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<br>Note that where there are junctions within the Flood Modeller 1D model (i.e. at structures), both the nodes immediately upstream and downstream must be connected to TUFLOW. Refer to the below figure where the junctions are circled in blue and the upstream and downstream RIVER units are circled in yellow. The HX lines must be broken between the junctions as this is a requirement of a linked Flood Modeller – TUFLOW model. In the example below, the HX lines are broken between FC01.35 and FC01.34 as a culvert is located between these nodes.<br>
In the example below, the HX lines are broken between FC01.35 and FC01.34 as a culvert is located between these nodes.
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[[File:FM_junction.jpg|540x540px|alt=]]
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