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== 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 needsneed to be copied into the appropriate layers in the SWMM GeoPackage.<br>
'''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 ==
This tool, '''Junctions - Downstream junctions to outfalls''', can be found in the QGIS processing toolbox panel under 'TUFLOW >> SWMM'. To open the Processing Toolbox Panelpanel, navigate to 'Processing' in the menubar and select 'Toolbox'.<br>
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[[File:open_processing_toolbox.png]]<br>
=== Parameters ===
<ol>
<li>'''Input junctions:''' The existing junctions layer to be converted. To only convert some of the junctions, tick on 'Selected features only'. The tool will only convert the junctions which have been selected.
<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).
<li>'''Input conduits:''' The conduits layer containing the channel(s) to which the junctionsjunction and outfallsoutfall node(s) are connected.
<li>'''Modified junctions layer:''' Determines the location and filename of the modified junctions layer (outfall nodes removed). Details on the options are below. ▼<li>'''NewModified outfallsjunctions layer:''' Determines the location and filename of the newmodified outfallsjunctions layer. Details(outfall onnode(s) the options are belowremoved).
▲<li>''' ModifiedNew junctionsoutfalls layer:''' Determines the location and filename of the modifiednew junctionsoutfalls layer (outfall nodes removed). Details on the options are below.
</ol>
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[[File:downstream_junctions_to_outfalls_dialogJunctions_Downstream_Junctions_to_Outfalls_Dialog_c.png]]
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:'''Output Options:'''<br>
:These options apply for both the 'Modified junctions layer' and the 'New outfalls layer' parameters. For each of the following options, the tool will output a new junctions/outfalls layer and won't override the existing one. <br>
<ol>
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{{Video|name=Animation_Junctions_Downstream_Junctions_to_Outfalls_01b.mp4|width=1236}}
[[File:downstream_junctions_to_outfalls_output_options_3.png]]
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:<li>Create Temporary Layer:
:*Creates a temporary scratch layer. This layer will open into the QGIS workspace but it will '''not''' be saved anywhere.
:<li>Save to File...:
:*The user can navigate to a folder and save the new junctions/outfalls layer to a new GeoPackage Database.
:<li>Save to GeoPackage...:
:*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 junctions/outfalls layer will be saved as that name in the GPKG.
::[[File:Layer_Name_junction_dialog.png]]<font color=white>"space"</font>[[File:Layer_Name_outfall_dialog.png]]
:<li>Save to Database Table...:
:*'''<font color=red>???</font>'''
:<li>Append to Layer...:
:*'''<font color=red>???</font>'''<br>
</ol>
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{{Video|name=Animation_Junctions_Downstream_to_Outfalls_01a.mp4|width=1235}}
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