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1D Integrity Tool - Pipe Direction: Difference between revisions

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===Tool Description===
Checks pipe direction and will correct based on the selected processing option.
Checks pipe direction and will correct based on the selected rule. Based on inverts will check the gradient of the pipe is in the direction of flow. If there is a negative gradient, the tool will switch the pipe direction. Based on pipe direction continuity will do a basic check on places where the pipe direction does not appear to be continuous. It will ignore pipes that connect to junctions with 3 or more other pipes as these can be ambiguous in determining continuity.
 
===Inputs===
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===Outputs===
The following are output from the tool:
* Output point layer - an output log from the tool documenting where pipe directions were reversed.
* A temporary layer for each input with pipe direction corrected.
 
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The following options are available:
<ul>
<li>'''Based on inverts''' - will change the pipe direction if there is an adverse gradient (downstream invert is higher than the upstream invert). Recommended only if it is apparent from an initial, manual inspection that the pipe dataset has occurrences of this error (i.e. not recommended to run this option by default without first confirming it's needed).<br><br>
''Note:<br>This option will only correct pipe direction if the adverse inverts are in the channel attribute data (i.e. if elevations are stored at the pits, then this option will not change the pipe direction).''<br><Br>
Recommended only if it is apparent from an initial, manual inspection that the pipe dataset has occurrences of this error (i.e. not recommended to run this option by default without first confirming it's needed).<br><br>
<li>''Note:'Based on pipe direction continuity''' - This tooloption will onlyperform correcta pipebasic directioncheck ifbased on the adverseincoming invertsand areoutgoing inpipe thedirections. channelIf attributethe dataupstream (i.e.or ifdownstream elevationsjunction arehas stored3 ator themore pitspipes entering/leaving, thenthe this optiontool will not change the pipe direction) as the continuity at these locations can be ambiguous.
</ul>
<Br>
''Prior to TUFLOW Plugin Version 3.3 the tool allowed both processing options to be run together, however it has been changed so that each processing option should be run separately and sequentially.'
 
 
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