Integrity Tool - Flow Trace Tool: Difference between revisions
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Tuflowduncan (talk | contribs) Created page with "The flow trace tool creates traces upstream from the selected channel, selecting all upstream network objects in the QGIS map window (network lines and network points). <ol>..." |
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The
<ol>
<li> Find and select link Pipe15.
[[File:Pipe15.png]]
<li> Ensure that '''1d_nwk_MI01_Pipes_001_L_EG1_ID1_SN1_PD1''' is referenced in the 1D network Line Layers and select the '''Flow Trace''' tab.
<li> Select the relevant option to undertake the '''Flow Area''' and the '''Invert Checks'''.
<li> Also ensure the '''‘Generate Long plots’''' option is selected.<br>
[[File:Flow trace.png]]<br>
Table 1 describes the various Checks that can be conducted.<br>
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'''Table 1: Flow Trace Checks'''
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! style="background-color:#005581; font-weight:bold; color:white;"| Check
! style="background-color:#005581; font-weight:bold; color:white;" width=
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|Flow Area Check || Identifies location where the downstream flow are decreases
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|Ground Cover Check || Identifies locations where the distance between the pipe suffix and the ground elevation (taken from an in input DTM) is less than specified
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<li> Run the Flow Trace. This will select all the upstream links and also add another output layer identifying the locations which fail the flow area and invert checks.<br>
[[File:Flow trace output.png]]<br>
A Flow Trace window is also provided which provides long sections or the various upstream paths from the selected link, highlighting areas of continuity failures. The individual paths can be assessed individually and identified within the QGIS canvas.<br>
[[File:Flow trace canvas.png]]<br>
To find out more about the options in the Flow Trace Canvas see this [[1D_Integrity_Tool_-_Flow_Trace_-_Long_Plot|page]].<br>
In this instance the identified issues would have to manually adjusted if appropriate, no automatic fixes are available.
</ol>
Please return to the '''<u>[[1D_Integrity_Tool_-_Tutorial#Using_the_1D_Integrity_Tool|1D Integrity tutorial page]]</u>''' to continue the tutorial.
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