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FM Tutorial M02 QGIS GPKG Boundary Conditions: Difference between revisions

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Created page with "<ol> =Introduction= This page details the method for using QGIS to create the GIS based boundary layer. The layer will be populated with the name of each inflow boundary which..."
 
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<li>Save the bc_dbase as '''bc_dbase_FMT_M02.csv'''. It is now ready to be used within the model.
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<li>CopyOpen the layer '''2d_sa_FMT_M02_001_R.shp''' in QGIS. This layer is located within within the '''Module_data\Module_02\Inflow''' folder into the '''TUFLOW\model\gis''' folder.
<li>ReloadDrag and drop the layer '''2d_sa_FMT_M02_001_R.shp''' within QGIS frominto the project GeoPackage file <b>M02_5m_002.gpkg</b> in the Browser Panel. ▼
<li>Open the layer in QGIS. Four polygons have been digitised over the location of the proposed development. Each polygon represents a sub-catchment to which different inflow boundaries will be associated. ▼
<li>Drag and dropClose the layer '''2d_sa_FMT_M02_001_R.shp''' intoin the Layers Panel and reload it from the project GeoPackage file <b>M02_5m_002.gpkg</b> in the Browser Panel. Close the layer in QGIS.
▲<li>Open theThe layer in'''2d_sa_FMT_M02_001_R''' QGIS.is Fourmade up of four polygons that have been digitised over the location of the proposed development. Each polygon represents a sub-catchment to which different inflow boundaries will be associated.
▲<li>Reload the layer '''2d_sa_FMT_M02_001_R''' within QGIS from the project GeoPackage file <b>M02_5m_002.gpkg</b>
<li>Turn on Toggle Editing mode. Populate the first and only attribute of each polygon with the name of the inflow boundary . The next steps of this module will link these boundary names with an inflow using the bc_dbase located in '''TUFLOW\bc_dbase''' . <br>
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<br>{{Video|name= Define Boundary Conditions Module 02 QGIS GPKG.mp4 |width=1123}}<br>
 
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<li>Save the layer '''2d_sa_FMT_M02_001_R'''. <br>
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=Conclusion=
A GIS layer has been created containing four polygons in a 2d_sa layer over the location of the proposed development. The existing boundary conditions database (bc_dbase) has been modified to link these four GIS objects to hydrographs within an external csv file. Please return to the main page of the [[Flood Modeller Tutorial Module02_Provisional#Flood Modeller 1D/ESTRY 1D Link | Flood Modeller Tutorial 2]].
 
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