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Tutorial M04 002 Check Files QGIS GPKG: Difference between revisions

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Created page with "= Introduction = QGIS is used to import the check files and review the topographic modification cutting through the embankment, and the layered flow constriction. <br> <br> =..."
 
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= Introduction =
QGIS is used to import the check files and review the topographic modification cutting through the embankment, and the layered2d flow constrictionbridge. <br>
<br>
 
= Method =
This tutorial introduces:
:*[[Check_Files_2d_bg_uvpt_check | _bg_uvpt_check_P]]
:*[[Check_Files_2d_DEM_Z | _DEM_Z]]
:*[[Check_Files_2d_zsh_zpt | _zsh_zpt_check_P]]
:*[[Check_Files_2d_lfcsh_uvpt | _lfcsh_uvpt_check_P]]
 
Review the check files:
<ol>
<li>Open the files, either:
:*Within the QGIS Browser Panel, navigate to '''Module_04\TUFLOW\check\M04_5m_001_CheckM04_5m_002_Check.gpkg''' and double click the following layerslayer, or
::*'''M04_5m_001_zsh_zpt_check_PM04_5m_002_bg_uvpt_check_P'''
:*In File Explorer, navigate to the '''Module_04\TUFLOW\check''' folder, drag and drop the '''M04_5m_001_CheckM04_5m_002_Check.gpkg''' into the QGIS workspace and select the layerslayer above (hold Ctrl to select multiple).▼
::*'''M04_5m_001_lfcsh_uvpt_check_P'''
▲:*In File Explorer, navigate to the '''Module_04\TUFLOW\check''' folder, drag and drop the '''M04_5m_001_Check.gpkg''' into the QGIS workspace and select the layers above (hold Ctrl to select multiple).
<li>Navigate to the '''Module_04\TUFLOW\check''' folder and open the '''M04_5m_001_DEM_Z.tif''' layer into QGIS.
<li>Use the 'Apply TUFLOW Styles to Open Layers'.
<li>Use the 'Apply GPKG Layer Names'.
<li>The lfcsh_uvpt_checkbg_uvpt_check file shows the Zpts where the 2d_lfcsh2d_bg is applied as a thin line. Only the cell sides have the flow constriction applied. The attribute table shows the values specified in the 2d_lfcsh2d_bg and the final elevation of the invert level after applying the Z shape. <br>▼
<li>The DEM_Z grid shows the final elevations used for the model calculations. Change the styling and inspect the area of the embankment is lowered. See <u>[[Tutorial_M02_001_Check_Files_QGIS_GPKG | Module 2]]</u> for more information on how to review topographic modifications. Note: The DEM_Z appears different to the input DEM as the resolution of the DEM_Z is coarser (2.5m) than the input file (0.5m).<br>
<li>The zsh_zpt_check file displays the elevation points changed by Z shape topographic update and the TUFLOW styling provides an indication of the elevation difference.<br>
<br>
{{Video|name=Animation_M04_GPKG_Check_01Tutorial M04 002 Check Files QGIS GPKG draft_2a.mp4|width=12801350}}<br>
<br>
▲<li>The lfcsh_uvpt_check file shows the Zpts where the 2d_lfcsh is applied as a thin line. Only the cell sides have the flow constriction applied. The attribute table shows the values specified in the 2d_lfcsh and the final elevation of the invert level after applying the Z shape. <br>
<br>
{{Video|name=Animation_M04_GPKG_Check_02.mp4|width=1280}}
</ol>
<br>
 
= Conclusion =
:*The DEM_Z and zsh_zpt_check filebg_uvpt_check was usedviewed to ensureshowing the cutform throughlosses wasand correctlyblockages applied to allowthe flowthin through the embankmentline.
:*The lfcsh_uvpt_check was viewed showing the form losses and blockages applied to the thin line.
<br>
{{Tips Navigation
|uplink=[[Tutorial_M04#Check_FilesCheck_Files_2| Back to Module 4 Main Page]]
}}
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