Check Files 2d DEM Zmin: Difference between revisions

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Latest revision as of 13:52, 5 August 2025

This file contains a raster based on the minimum Sub-Grid Sampling (SGS) elevations. This file is only produced when running a model with SGS.

Output grid formats currently supported by TUFLOW include GeoTIFF grids (.tif), binary grids (.flt) and ESRI ASCII grid format (.asc). The preferred format can be set in the TUFLOW Control File (.tcf) using: Grid Format == TIF | FLT | ASC. The default output format is TIF. All of these formats are widely recognised (QGIS, MapInfo, ArcMap, SMS etc). The asc_to_asc utility can be used to convert between ASC and TIF (in both directions).

The cell size of the _DEM_Zmin check file (and all raster outputs from TUFLOW) can be set with the .tcf command:
Grid Output Cell Size == <grid_cell_size>

This raster is a north-south aligned raster and so minor interpolation is required to display the TUFLOW model on this grid. To view the exact values at each point, use the 2d_zpt check file, which is more suitable for viewing the values at individual zpts.

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TUFLOW Check Files

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-The _DEM_ZMin contains a raster based on the minimum SGS elevations. This file is only produced when running a model with SGS.<br>
+This file contains a raster based on the minimum Sub-Grid Sampling (SGS) elevations. This file is only produced when running a model with SGS.<br>
-<br>
-Output grid formats currently supported by TUFLOW include the GeoTIFF grids (.tif), binary grids (.flt) and ESRI ASCII grid format (.asc). The TCF command <font color="blue"><tt>Grid Format </tt></font> <font color="red"><tt>==</tt></font><tt> TIF</tt> or <font color="blue"><tt>Grid Format </tt></font> <font color="red"><tt>==</tt></font><tt> FLT</tt> or <font color="blue"><tt>Grid Format </tt></font> <font color="red"><tt>==</tt></font><tt> ASC</tt> can be used to set the preferred output format. The default output format is TIF.  The [[ASC_to_ASC#2023-03-AA_.28and_later.29 | asc_to_asc utility]] can be used to convert between ASC and TIF (in both directions).<br>
-<br>
-All of these formats are widely recognised (QGIS, MapInfo, ArcMap, SMS etc).  The cell size of the _DEM_Zmin check file (and all raster outputs from TUFLOW) can be set with the TCF command:<br>
-<font color="blue"><tt>Grid Output Cell Size </tt></font> <font color="red"><tt>==</tt></font><tt> <cell size in metres or feet>></tt><br>
-This raster is a north-south aligned raster and so minor interpolation is required to display the TUFLOW model on this grid.  To view the exact values at each point the [[Check_Files_2d_zpt | 2d_zpt]] check file can be used.   The _zpt_check file is more suited to viewing the values at individual zpts.<br>
+Output grid formats currently supported by TUFLOW include GeoTIFF grids (.tif), binary grids (.flt) and ESRI ASCII grid format (.asc). The preferred format can be set in the TUFLOW Control File (.tcf) using: <font color="blue"><tt>Grid Format </tt></font> <font color="red"><tt>==</tt></font><tt> TIF | FLT | ASC</tt>. The default output format is TIF.  All of these formats are widely recognised (QGIS, MapInfo, ArcMap, SMS etc). The [[ASC_to_ASC#2023-03-AA_.28and_later.29 | asc_to_asc utility]] can be used to convert between ASC and TIF (in both directions).<br>
+The cell size of the _DEM_Zmin check file (and all raster outputs from TUFLOW) can be set with the .tcf command:<br>
+<font color="blue"><tt>Grid Output Cell Size </tt></font> <font color="red"><tt>==</tt></font><tt> <grid_cell_size></tt><br>
+This raster is a north-south aligned raster and so minor interpolation is required to display the TUFLOW model on this grid. To view the exact values at each point, use the [[Check_Files_2d_zpt | 2d_zpt]] check file, which is more suitable for viewing the values at individual zpts.<br>
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Check Files 2d DEM Zmin: Difference between revisions

Latest revision as of 13:52, 5 August 2025

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