Difference between revisions of "QGIS SWMM Junctions Downstream Junctions to Outfalls"

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== Introduction ==
 
== Introduction ==
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This tool converts junctions on the downstream side of a network to outfall nodes as required by SWMM. This tool uses the "From node" and "To Node" fields to determine position in the network. Ensure that these fields are populated and up to date.<br>
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This tool converts junctions on the downstream side of a network to outfall nodes as required by SWMM. An outfall layer with the converted nodes will be created along with a modified junction layer (outfall nodes removed). The contents of these layers need to be copied into the appropriate layers in the SWMM GeoPackage.<br>
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'''Note:''' It is recommended to use the <u>[[QGIS SWMM Conduits Assign Node Fields|Conduits - Assign Node Fields]]</u> tool and the <u>[[QGIS SWMM Integrity Make Node Names Unique|Integrity - Make Node Names Unique]]</u> tool to avoid errors when running the simulation.
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'''Note:''' This tool relies on the 'From Node' and 'To Node' fields to determine position in the network. The <u>[[QGIS SWMM Conduits Assign Node Fields|Conduits - Assign node fields]]</u> processing tool will ensure the 'From Node' and 'To Node' fields are correctly assigned.
 
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== Usage ==
 
== Usage ==
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This tool, '''Junctions - Downstream junctions to outfalls''', can be found in the QGIS processing toolbox panel under 'TUFLOW > SWMM'. To open the Processing Toolbox Panel, navigate to 'Processing' in the menubar and select 'Toolbox'.<br>
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This tool, '''Junctions - Downstream junctions to outfalls''', can be found in the QGIS processing toolbox panel under TUFLOW >> SWMM. To open the Processing Toolbox panel, navigate to 'Processing' in the menubar and select 'Toolbox'.<br>
 
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[[File:open_processing_toolbox.png]]<br>
 
[[File:open_processing_toolbox.png]]<br>
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=== Parameters ===
 
=== Parameters ===
 
<ol>
 
<ol>
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<li>'''Input junctions:''' Use the dropdown menu to select the existing junctions layer that will be updated.  
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<li>'''Input junctions:''' The existing junctions layer.
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<li>'''Input conduits:''' Select the ... button and tick on the conduits layer that the junctions are snapped to.  
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<li>'''Selected features only:''' If node(s) in the junctions layer have been selected using the 'Select Features' tool, this option will become available. If checked on, the tool will only check the selected node(s).
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<li>'''New outfalls layer:''' Determines the output file. Details on the options are below.  
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<li>'''Input conduits:''' The conduits layer containing the channel(s) to which the junction and outfall node(s) are connected.  
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<li>'''Modified junctions layer:''' Determines the location and filename of the modified junctions layer (outfall node(s) removed).  
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<li>'''New outfalls layer:''' Determines the location and filename of the new outfalls layer.  
 
</ol>
 
</ol>
 
<br>
 
<br>
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[[File:downstream_junctions_to_outfalls_dialog.png]]
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[[File:Junctions_Downstream_Junctions_to_Outfalls_Dialog_c.png]]
 
<br><br>
 
<br><br>
  
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:'''Output Options:'''<br>
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== Example ==
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:For each of the following options, the tool will output a new outfalls layer and won't override the existing one. <br>
 
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<ol>
 
 
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[[File:downstream_junctions_to_outfalls_output_options_2.png]]
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{{Video|name=Animation_Junctions_Downstream_Junctions_to_Outfalls_01b.mp4|width=1236}}
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<br><br>
 
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:<li>Create Temporary Layer:
 
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:*Creates a temporary scratch layer. This layer will open into the QGIS workspace but it will '''not''' be saved anywhere.
 
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:<li>Save to File...:
 
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:*The user can navigate to a folder and save the updated outfalls layer to a new GeoPackage Database.
 
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:<li>Save to GeoPackage...:
 
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:*The user can navigate to an existing GeoPackage Database. Once selected, a 'Layer Name' dialog will appear. Enter the new layer name, and the updated outfalls layer will be saved as that name in the GPKG.
 
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::[[File:Layer_Name_junction_dialog.png]]
 
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:<li>Save to Database Table...:
 
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:*'''<font color=red>???</font>'''
 
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:<li>Append to Layer...:
 
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:*'''<font color=red>???</font>'''<br>
 
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</ol>
 
 
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=== Example ===
 
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{{Video|name=.mp4|width=1235}}
 
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{{Tips Navigation
 
{{Tips Navigation
 
|uplink=[[TUFLOW_QGIS_Plugin#Usage| Back to TUFLOW QGIS Plugin Main Page]]
 
|uplink=[[TUFLOW_QGIS_Plugin#Usage| Back to TUFLOW QGIS Plugin Main Page]]
 
}}
 
}}

Latest revision as of 14:58, 3 May 2024

Introduction

This tool converts junctions on the downstream side of a network to outfall nodes as required by SWMM. An outfall layer with the converted nodes will be created along with a modified junction layer (outfall nodes removed). The contents of these layers need to be copied into the appropriate layers in the SWMM GeoPackage.

Note: This tool relies on the 'From Node' and 'To Node' fields to determine position in the network. The Conduits - Assign node fields processing tool will ensure the 'From Node' and 'To Node' fields are correctly assigned.

Usage

This tool, Junctions - Downstream junctions to outfalls, can be found in the QGIS processing toolbox panel under TUFLOW >> SWMM. To open the Processing Toolbox panel, navigate to 'Processing' in the menubar and select 'Toolbox'.

Open processing toolbox.png

Parameters

  1. Input junctions: The existing junctions layer.
  2. Selected features only: If node(s) in the junctions layer have been selected using the 'Select Features' tool, this option will become available. If checked on, the tool will only check the selected node(s).
  3. Input conduits: The conduits layer containing the channel(s) to which the junction and outfall node(s) are connected.
  4. Modified junctions layer: Determines the location and filename of the modified junctions layer (outfall node(s) removed).
  5. New outfalls layer: Determines the location and filename of the new outfalls layer.


Junctions Downstream Junctions to Outfalls Dialog c.png

Example



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