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Tutorial M11 002 GIS Inputs QGIS GPKG: Difference between revisions

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<span style="color:#FF0000">
<font size = 18>Page Under Construction</font>
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= Introduction =
QGIS is used to create, import and view input data.<br>
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:*'''1d_nwk_M11_bridges_002_L'''
:*'''1d_nwk_M11_weirs_002_L'''
 
:*Within the QGIS Browser Panel, navigate to the ''''M11_002.gpkgModule_11\TUFLOW\model\xs''' andfolder. doubleDrag clickand drop the following layers, orinto the '''M11_002.gpkg''':<br>▼
::*'''1d_xs_M11_bridges_002_L'''▼
::*'''1d_xs_M11_weirs_002_L'''▼
 
Investigate the supplied files:
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<li>The 1d_nwk weir layer represents a weir for flow over the bridge in 1D at the downstream road crossing. Type attribute 'W' is specified, the weir is based on the broad crested weir formula: <br>
<br>
{{Video|name=Animation_M11_002_GIS_06a.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 06a.gif]]<br>
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<li>Open the files, either:
▲:*Within the QGIS Browser Panel, navigate to ''''M11_002.gpkg''' and double click the following layers, or
▲::*'''1d_xs_M11_bridges_002_L'''
▲::*'''1d_xs_M11_weirs_002_L'''
:*In File Explorer, drag and drop the '''M11_002.gpkg''' into the QGIS workspace and select the layers above (hold Ctrl to select multiple).
<li>Use the 'Apply TUFLOW Styles to Open Layers'.
<li>Use the TUFLOW Viewer to view the 'HW' (height vs width) cross section of the bridges and 'XZ' (distance vs elevation) cross section of the weir. <br>
Note: If a 1d_xs line has only two nodes, it must intersect with the 1d_nwk it provides information for. If a line has more than two nodes, it must be snapped to the 1d_nwk. The tutorial shows both. <br>
<br>
{{Video|name=Animation_M11_002_GIS_07a.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 07a.gif]]<br>
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<li>Click 'OK' and turn off editing to save the edits.<br>
<br>
{{Video|name=Animation_M11_GPKG_002_GIS_05.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 05a.gif]]<br>
<br>
</ol>
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<li>Click 'OK' and turn off editing to save the edits.<br>
<br>
{{Video|name=Animation_M11_GPKG_002_GIS_01.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 01a.gif]]<br>
<br>
</ol>
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<li>Click 'OK' and turn off editing to save the edits.<br>
<br>
{{Video|name=Animation_M11_GPKG_002_GIS_02.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 02.gif]]<br>
<br>
</ol>
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<li>Water from 1D does not transition to 2D at this location anymore, delete the two HX lines intersecting the open channel. The water at the 1D channel node is transferred to the banks by the CN lines, all four CN lines remain:<br>
<br>
{{Video|name=Animation_M11_GPKG_002_GIS_03.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 03.gif]]<br>
<br>
<li>Create new HX lines connecting the current HX lines on the banks of the open channel:
<li>Click 'OK' and turn off editing to save the edits.<br>
<br>
{{Video|name=Animation_M11_GPKG_002_GIS_04.mp4|width=1238}}<br>
[[File:Animation M11 002 GIS 04.gif]]<br>
</ol>
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