Tutorial M01 Check Files QGIS: Difference between revisions
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Created page with "= Introduction = QGIS is used to import check files and review the model domain, active cells, boundary conditions, materials and final elevations.<br> <br> =Method= This tut..." |
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=Method=
This tutorial introduces:
:*[[Check_Files_2d_dom | _dom_check_R
:*[[Check_Files_2d_grd | _grd_check_R
:*[[Check_Files_2d_bcc_check | _bcc_check_R
:*[[Check_Files_2d_sac | _sac_check_R
:*[[Check_Files_2d_DEM_M | _DEM_M
:*[[Check_Files_2d_DEM_Z | _DEM_Z
Review vector check files:
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<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. <br>
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{{Video|name=Animation_M01_Check_Vectors_01c.mp4|width=1123}}<br>
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<li>The bcc_check contains information on the 2D boundaries used in the 2d_bc layer. It this tutorial, it includes an upstream and downstream boundary.
<li>The sac_check is related to the 2d_sa boundary layer and, by default, shows the lowest cell in every polygon where the hydrograph is applied to.<br>
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{{Video|name=Animation_M01_Check_Vectors_02d.mp4|width=1123}}
</ol>
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<ol>
<li>Open the following files from the ''' Module_01\TUFLOW\check''' folder:
:*'''M01_5m_001_DEM_Z.
:*'''M01_5m_001_DEM_M.
<li>These can either be dragged and dropped into QGIS, or loaded by selecting Layer > Add Layer > Add Raster Layer from the menu.
<li>Right click on the original DEM and select Styles > Copy Style. Right click on the DEM_Z and select Styles > Paste Style.
<li>The DEM_Z grid shows the final elevations used for the model calculations. The default size of the grid cells is half the smallest 2D cell size. In this tutorial it is 2.5m. </li>
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{{Video|name=Animation_M01_GPKG_Check_DEMZ.mp4|width=1123}}<br>
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<li>Right click on the DEM_M file and select 'Properties'.
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<li>The DEM_M shows the final material ID values. Change the labels to match the material class as shown below.<br>
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{{Video|name=Animation_M01_GPKG_Check_DEMM.mp4|width=1123}}<br>
</ol>
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