Check Files 2d DEM M

From Tuflow
Revision as of 09:42, 25 January 2016 by Par (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

This raster file contains the final material ID values in the model, it includes both 2D areas of the model and also 1D sections which utilise the 1D Water Level Line (1D mapping) functionality. If not using the material land use functionality (e.g. "Set CnM == 0.035"), this file may contain zero values.

The output format of the raster grid will be either in the ESRII .asc (text) or .flt (binary) formats. The .tcf command "Grid Format == ASC" or "Grid Format == FLT" can be used to set the preferred output format. The default output format as FLT. The asc_to_asc utility can be used to convert between ASC and FLT (in both directions).

Both of these formats are widely recognised (QGIS, MapInfo, ArcMap, SMS etc). The cell size of the DEM_M check file (and all raster outputs from TUFLOW) can be set with the .tcf command:
"Grid Output Cell Size == <cell size in metres or feet>"
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 the cell side points the 2d_uvpt check file can be used. The _uvpt_check file is more suited to viewing the values at individual cells. Whilst the DEM_M can be used to quickly check large areas.

The DEM_M check file can be styled in your GIS software and you can also perform grid calculation between simulations.
In the image below the DEM_M check file is shown for the the spatial distribution of the land use.

Check Files dem M 01.jpg

Back to TUFLOW check files.