ElizaCollison at 02:42, 9 January 2023

2023-01-09T02:42:37Z

← Older revision		Revision as of 12:42, 9 January 2023
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	=Conclusion=		=Conclusion=
	We have modified the TGC file to read the Zpt elevations from a DEM dataset. Please return to the tutorial model module 1 page where the next step is to [[~~Module1_test_Archive~~#Define_Preliminary_Active_and_Inactive_Areas_of_the_2D_Domain\|define the active areas]].		We have modified the TGC file to read the Zpt elevations from a DEM dataset. Please return to the tutorial model module 1 page where the next step is to [[Tutorial_Module01_Archive#Define_Preliminary_Active_and_Inactive_Areas_of_the_2D_Domain\|define the active areas]].
	</ol>		</ol>

ElizaCollison: Created page with "
=Introduction= As of TUFLOW build 2011-09-AF, TUFLOW can directly read elevation data from a Digital Elevation Model (DEM). The format recognised by TUFLOW is ESRI ASCII..."

2023-01-09T02:06:31Z

Created page with "<ol> =Introduction= As of TUFLOW build 2011-09-AF, TUFLOW can directly read elevation data from a Digital Elevation Model (DEM). The format recognised by TUFLOW is ESRI ASCII..."

New page

<ol>
=Introduction=
As of TUFLOW build 2011-09-AF, TUFLOW can directly read elevation data from a Digital Elevation Model (DEM). The format recognised by TUFLOW is ESRI ASCII Grid, this is an open text format that is recognised by a wide range of software including Vertical Mapper and Encom Discover (MapInfo), ArcGIS, QGIS.

For this tutorial a DEM has been provided in this format with a .asc extension, however, the .txt extension is also used for this file format. The process of creating a DEM in these packages is beyond the scope of this tutorial, for details on DEM creation please see the relevant documentation for your GIS package.

=Method=
<ol>
<li>Copy or move the DEM ('''dem_m01.asc''') from the Module Data '''Module_Data\DEMs\Text\''' into the '''TUFLOW\model\grid\''' folder. TUFLOW can read the DEM from the module data if desired, however, for clarity this is included in the TUFLOW\model\ directory.</li>
<li>Open the current TGC file '''M01_5m_002.tgc''' in your text editor'''.</li>
<li>Assign a value default value for the Zpts (above any expected flood level), by adding the following line to the TGC file. 
<tt>Set Zpts </tt> <tt>== 75</tt></li>
<li>To assign elevations to the Zpts using a DEM, the following command is used. 
<tt>Read GRID Zpts </tt> <tt>==</tt><tt> grid\DEM_M01.asc</tt> </li>
<li>Save the modified TGC file.</li>
</ol>

=Conclusion=
We have modified the TGC file to read the Zpt elevations from a DEM dataset. Please return to the tutorial model module 1 page where the next step is to [[Module1_test_Archive#Define_Preliminary_Active_and_Inactive_Areas_of_the_2D_Domain|define the active areas]].
</ol>

Tute M01 Inspect Zpts ASC Archive - Revision history

ElizaCollison at 02:42, 9 January 2023

ElizaCollison: Created page with " =Introduction= As of TUFLOW build 2011-09-AF, TUFLOW can directly read elevation data from a Digital Elevation Model (DEM). The format recognised by TUFLOW is ESRI ASCII..."

ElizaCollison: Created page with "
=Introduction= As of TUFLOW build 2011-09-AF, TUFLOW can directly read elevation data from a Digital Elevation Model (DEM). The format recognised by TUFLOW is ESRI ASCII..."