Difference between revisions of "FM Tutorial M01 QGIS GPKG x1D Nodes"
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<li> Move the GIS layer <b>1d_x1d_FMT_M01_nodes_001_P.gpkg</b> into the project GeoPackage file <b>M02_5m_002.gpkg</b> in the Browser Panel. </li> | <li> Move the GIS layer <b>1d_x1d_FMT_M01_nodes_001_P.gpkg</b> into the project GeoPackage file <b>M02_5m_002.gpkg</b> in the Browser Panel. </li> | ||
<li>Reload the layer <b>1d_x1d_FMT_M01_nodes_001_P</b> in QGIS from <b>M02_5m_002.gpkg</b>.</li> | <li>Reload the layer <b>1d_x1d_FMT_M01_nodes_001_P</b> in QGIS from <b>M02_5m_002.gpkg</b>.</li> | ||
| − | <li> Open the attribute table. This layer only has a single attribute correlating to the unique | + | <li> Open the attribute table. This layer only has a single attribute correlating to the unique Node ID of a RIVER, INTERPOLATE or REPLICATE unit within the Flood Modeller model. Note that the Node IDs are case-sensitive as this is a requirement of Flood Modeller. At junctions, both the upstream and downstream nodes must be digitised within this layer. It is often helpful to label the Node IDs.</li> |
<br>{{Video|name= Define External 1D Networks GPKG v2.mp4 |width=1123}}<br> | <br>{{Video|name= Define External 1D Networks GPKG v2.mp4 |width=1123}}<br> | ||
| − | <br>In recent versions of Flood Modeller, it is possible to export the nodes to a TUFLOW Shapefile. This can then be imported into the Geopackage file format as the 1d_X1D layer. It should however be noted that the model should be correctly georeferenced within Flood Modeller which isn't always the case. The georeferencing of a model network can be a time-consuming process and should be considered at the project outset.<br> | + | <br>In recent versions of Flood Modeller, it is possible to export the nodes to a TUFLOW Shapefile using the Export->Nodes as TUFLOW Shapefile tool. This can then be imported into the Geopackage file format as the 1d_X1D layer. It should however be noted that the model should be correctly georeferenced within Flood Modeller which isn't always the case. The georeferencing of a model network can be a time-consuming process and should be considered at the project outset.<br> |
<br>You have now created the GIS layer representing the Flood Modeller nodes for reading into TUFLOW. Return to the [[Flood_Modeller_Tutorial_Module01_Provisional#Define_the_1D/2D_Boundary Links|Flood Modeller Tutorial Model]].<br> | <br>You have now created the GIS layer representing the Flood Modeller nodes for reading into TUFLOW. Return to the [[Flood_Modeller_Tutorial_Module01_Provisional#Define_the_1D/2D_Boundary Links|Flood Modeller Tutorial Model]].<br> | ||
</ol> | </ol> | ||
Revision as of 18:42, 25 September 2025
- Open the FloodModeller_Nodes_P.shp layer from the Module_Data\Module_01\gis folder.
- Save as 1d_x1d_FMT_M01_nodes_001_P.gpkg within the FMT_tutorial\FMT_M01\TUFLOW\model\gis folder.
- Move the GIS layer 1d_x1d_FMT_M01_nodes_001_P.gpkg into the project GeoPackage file M02_5m_002.gpkg in the Browser Panel.
- Reload the layer 1d_x1d_FMT_M01_nodes_001_P in QGIS from M02_5m_002.gpkg.
- Open the attribute table. This layer only has a single attribute correlating to the unique Node ID of a RIVER, INTERPOLATE or REPLICATE unit within the Flood Modeller model. Note that the Node IDs are case-sensitive as this is a requirement of Flood Modeller. At junctions, both the upstream and downstream nodes must be digitised within this layer. It is often helpful to label the Node IDs.
Introduction
We will now create a TUFLOW GIS layer to reference the external 1D nodes within the Flood Modeller model network. The purpose of this layer is to specify the spatial location of each of the linked Flood Modeller nodes. This allows TUFLOW to read the water levels from the Flood Modeller model and apply them to the TUFLOW domains as 2D water level boundaries.
Method
In recent versions of Flood Modeller, it is possible to export the nodes to a TUFLOW Shapefile using the Export->Nodes as TUFLOW Shapefile tool. This can then be imported into the Geopackage file format as the 1d_X1D layer. It should however be noted that the model should be correctly georeferenced within Flood Modeller which isn't always the case. The georeferencing of a model network can be a time-consuming process and should be considered at the project outset.
You have now created the GIS layer representing the Flood Modeller nodes for reading into TUFLOW. Return to the Flood Modeller Tutorial Model.