Tutorial M04 002 Check Files QGIS: Difference between revisions

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= Method =
= Method =
This tutorial introduces:
This tutorial introduces:
:*[[Check_Files_2d_DEM_Z | _DEM_Z]]
:*[[Check_Files_2d_zsh_zpt | _zsh_zpt_check_P]]
:*[[Check_Files_2d_bg_uvpt_check | _bg_uvpt_check_P]]
:*[[Check_Files_2d_bg_uvpt_check | _bg_uvpt_check_P]]


Review the check files:
Review the check files:
<ol>
<ol>
<li>Open the following files from the '''Module_04\TUFLOW\check''' folder:
<li>Open the following file from the '''Module_04\TUFLOW\check''' folder:
*'''M04_5m_001_DEM_Z.tif'''
*'''M04_5m_001_bg_uvpt_check_P.shp'''
*'''M04_5m_001_zsh_zpt_check_P.shp'''
*'''M04_5m_001_lfcsh_uvpt_check_P.shp'''
<li>Use the 'Apply TUFLOW Styles to Open Layers'.
<li>Use the 'Apply TUFLOW Styles to Open Layers'.
⚫
<li>The bg_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_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 | 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_Check_01c.mp4|width=1280}}<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>
<br>
{{Video|name=Animation_M04_Check_02e.mp4|width=1280}}
{{Video|name=Animation_M04_Check_02e.mp4|width=1280}}

Revision as of 11:55, 4 February 2025

Introduction

QGIS is used to import the check files and review the topographic modification cutting through the embankment, and the 2d bridge.

Method

This tutorial introduces:

Review the check files:

  1. Open the following file from the Module_04\TUFLOW\check folder:
    • M04_5m_001_bg_uvpt_check_P.shp
  2. Use the 'Apply TUFLOW Styles to Open Layers'.
  3. The bg_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_bg and the final elevation of the invert level after applying the Z shape.


Conclusion

  • The DEM_Z and zsh_zpt_check file was used to ensure the cut through was correctly applied to allow flow through the embankment.
  • The lfcsh_uvpt_check was viewed showing the form losses and blockages applied to the thin line.


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