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Tutorial M03 Check Files QGIS GPKG: Difference between revisions

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Created page with "<span style="color:#FF0000"> <font size = 18>Page Under Construction</font> </span> = Introduction = QGIS is used to import the check files and review the 1D to 2D connections..."
 
 
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<span style="color:#FF0000">
<font size = 18>Page Under Construction</font>
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= Introduction =
QGIS is used to import the check files and review the 1D to 2D connections between the 1D network features and the 2D domain.
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Review the check files:
<ol>
<li>Open the following files, from the ''' Module_03\TUFLOW\check''' foldereither:
:*Within the QGIS Browser Panel, navigate to '''Module_03\TUFLOW\check\M03_5m_001_Check.gpkg''' and double click the following layers, or
:*'''M03_5m_001_grd_check_R.shp'''
::*'''M03_5m_001_nwk_C_check_L.shpM03_5m_001_grd_check_R'''
::*'''M03_5m_001_nwk_C_check_L'''
::*'''M03_5m_001_1d_to_2d_check_R.shp'''
:*In File Explorer, navigate to the '''Module_03\TUFLOW\check''' folder, drag and drop the '''M03_5m_001_Check.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 'Apply GPKG Layer Names'.
<li>The grd_check is the 2D grid defined by the 2d_code layer and contains a region object for each cell. It is useful to understand how the model is orientated, the cell size in relation to the hydraulic features and where certain calculations occur in the model. In this tutorial, the grid is orientated to align with the downstream road.
<li>The nwk_C_check'''nwk_C_check_L''' file shows all attributes applied to the network elements. Some fields should be inspected as they have changes from the input '''1d_nwk_M03_culverts''' layer:
:*Len_or_ANA: contains the length used by TUFLOW (determined by the digitised line).
:*pSlope: the slope of the 1D element.<br>
 
<br>[[File:Animation M03 Check 01a.gif]]<br><br>
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<li>The 1d_to_2d_check file shows the cells selected by the SX boundary links. It is recommended the same number of linking cells is selected at both the upstream and downstream of the culverts and that the number of selected cells is proportional to the structure size. Zoom to each structure to inspect the SX links:▼
{{Video|name=Animation_M03_GPKG_Check_01.mp4|width=1267}}<br><br>
 
▲<li>The 1d_to_2d_check'''1d_to_2d_check_R''' file shows the cells selected by the SX boundary links. It is recommended thethat samethe number of linkingselected cells is selectedhas at bothleast the upstreamwidth and(i.e. downstreamcell ofside thelength culverts and that thex number of selected cells) isof proportionalthe to theassociated structure1D sizeculvert. Zoom to each structure to inspect the SX links:
:*The point SX selects a single cell in which the point falls. <br>
:*The region SX selects all cells where the cell centers fall within the region.
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[[File:Cross-hair approach.png | 300px]]</ol>
<br>
[[File:{{Video|name=Animation_M03_Check_02a.gif]]mp4|width=1267}}<br>
</ol>
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