FM Tutorial M01 QGIS GPKG 1D2D Links - Revision history

RussellGardner: /* Method */

2025-10-07T10:36:12Z

Method

← Older revision		Revision as of 20:36, 7 October 2025
Line 21:		Line 21:
	=Method=		=Method=
	<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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 '''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>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>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 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>		<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>

RussellGardner: /* Method */

2025-10-07T10:20:46Z

Method

← Older revision		Revision as of 20:20, 7 October 2025
Line 21:		Line 21:
	=Method=		=Method=
	<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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 '''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>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 the layer <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 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>		<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>

RussellGardner: /* Method */

2025-10-07T10:20:27Z

Method

← Older revision		Revision as of 20:20, 7 October 2025
Line 20:		Line 20:

	=Method=		=Method=
	<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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 '''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>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 the layer <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 running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>

RussellGardner: /* Method */

2025-10-07T10:20:14Z

Method

← Older revision		Revision as of 20:20, 7 October 2025
Line 20:		Line 20:

	=Method=		=Method=
	<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from the'''FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty''' folder into the project GeoPackage file <b>M02_5m_002</b>. Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L~~.gpkg~~</b> </li>		<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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 '''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>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 the layer <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 running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>

RussellGardner: /* Method */

2025-10-07T10:19:37Z

Method

← Older revision		Revision as of 20:19, 7 October 2025
Line 20:		Line 20:

	=Method=		=Method=
	<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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.gpkg</b> </li>		<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from the'''FMT_tutorial\FMT_M01\TUFLOW\model\gis\empty''' folder into the project GeoPackage file <b>M02_5m_002</b>. Save the empty layer as <b>2d_bc_FMT_M01_HX_001_L.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 the layer <b>2d_bc_FMT_M01_HX_001_L </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 the layer <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 running along the banks of the watercourse. These lines are the 1D/2D boundary links and have been assigned a type ‘HX’.</li>

RussellGardner at 10:18, 7 October 2025

2025-10-07T10:18:57Z

← Older revision		Revision as of 20:18, 7 October 2025
Line 20:		Line 20:

	=Method=		=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. </li>		<li>Import an empty <b>2d_bc_empty_L.gpkg</b> layer from 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.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 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 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>		<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>
Line 33:		Line 31:
	[[File:FMT 1D-2D Linking QGIS.JPG\|600px]]		[[File:FMT 1D-2D Linking QGIS.JPG\|600px]]
	<br>		<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.		<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.
	<br>		<br>
	[[File:FM_junction.jpg\|540x540px\|alt=]]		[[File:FM_junction.jpg\|540x540px\|alt=]]

RussellGardner at 09:57, 7 October 2025

2025-10-07T09:57:10Z

← Older revision		Revision as of 19:57, 7 October 2025
Line 42:		Line 42:
	To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L </b> layer editable and ensure snapping has been turned on. For each node in the <b>1d_x1d_FMT_M01_nodes_001_P </b> layer, draw a line from the node to the HX line. The line must snap to both the node and the HX line, so it is recommended to use the snapping tool. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'. Assign the digitised CN lines an ‘f' attribute’ of ‘1’. This sets the weighting to be applied in distributing the water level from the 1D node to the 2D cell.<br>		To digitise the CN lines, make the <b> 2d_bc_FMT_M01_HX_001_L </b> layer editable and ensure snapping has been turned on. For each node in the <b>1d_x1d_FMT_M01_nodes_001_P </b> layer, draw a line from the node to the HX line. The line must snap to both the node and the HX line, so it is recommended to use the snapping tool. Draw two lines for each node, one to the left bank and one to the right bank. In the 'Type' attribute of each line, type 'CN'. Assign the digitised CN lines an ‘f' attribute’ of ‘1’. This sets the weighting to be applied in distributing the water level from the 1D node to the 2D cell.<br>
	<br>{{Video\|name=Define 1D 2D Bdy Links 02 SHP.mp4 \|width=1123}}<br>		<br>{{Video\|name=Define 1D 2D Bdy Links 02 SHP.mp4 \|width=1123}}<br>


	<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>		<br>The figure below shows how the nodes are connected at the confluence. Note that all Flood Modeller nodes at the junction are present within the 1d_x1D_nodes layer, and are connected to the 2D domain. The HX lines are broken around the junction. </li>
	<br>		<br>
	[[File:FMT 1D-2D Linking Junction QGIS.JPG\|900px]]		[[File:FMT 1D-2D Linking Junction QGIS.JPG\|900px]]
⚫	<br>
⚫	<li>Once all the CN and HX lines have been digitised along the tributary, save the file.</li>

	<br>		</br>

		⚫	<br><li>Once all the CN and HX lines have been digitised along the tributary, save the file.</li>
		⚫	</br>

	{{Tips Navigation		{{Tips Navigation
	\|uplink=[[Flood_Modeller_Tutorial_Module01_Provisional#Define Bank Elevations \| Back to Tutorial Module 01 Main Page]]		\|uplink=[[Flood_Modeller_Tutorial_Module01_Provisional#Define Bank Elevations \| Back to Tutorial Module 01 Main Page]]
	}}		}}

	</br>

	</ol>		</ol>

RussellGardner at 09:55, 7 October 2025

2025-10-07T09:55:38Z

← Older revision		Revision as of 19:55, 7 October 2025
Line 47:		Line 47:
	<br>		<br>
	[[File:FMT 1D-2D Linking Junction QGIS.JPG\|900px]]		[[File:FMT 1D-2D Linking Junction QGIS.JPG\|900px]]
			<br>

	<li>Once all the CN and HX lines have been digitised along the tributary, save the file.</li>		<li>Once all the CN and HX lines have been digitised along the tributary, save the file.</li>

RussellGardner at 09:55, 7 October 2025

2025-10-07T09:55:07Z

← Older revision		Revision as of 19:55, 7 October 2025
Line 50:		Line 50:
	<li>Once all the CN and HX lines have been digitised along the tributary, save the file.</li>		<li>Once all the CN and HX lines have been digitised along the tributary, save the file.</li>

			<br>

	{{Tips Navigation		{{Tips Navigation
	\|uplink=[[Flood_Modeller_Tutorial_Module01_Provisional#Define Bank Elevations \| Back to Tutorial Module 01 Main Page]]		\|uplink=[[Flood_Modeller_Tutorial_Module01_Provisional#Define Bank Elevations \| Back to Tutorial Module 01 Main Page]]

RussellGardner at 09:54, 7 October 2025

2025-10-07T09:54:44Z

← Older revision		Revision as of 19:54, 7 October 2025
Line 54:		Line 54:
	\|uplink=[[Flood_Modeller_Tutorial_Module01_Provisional#Define Bank Elevations \| Back to Tutorial Module 01 Main Page]]		\|uplink=[[Flood_Modeller_Tutorial_Module01_Provisional#Define Bank Elevations \| Back to Tutorial Module 01 Main Page]]
	}}		}}

			</br>

	</ol>		</ol>