Check Files 2d zpt

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This GIS check file contains information on the final 2D elevations in the TUFLOW model (2D Zpts). This final elevation is after all elevation commands (TIN, Grid, breakline etc.) have been read into the model. These are the elevations that are used in the computation. This check files allows you to see the elevations at any point and can therefore be used for cross-checking that the elevations have been interpolate correctly.

This check file can be very large and not necessarily easy to visualise, the DEM_Z check file contains a raster version of the elevations and is nicer for visualisation (in particular when looking at the entire model or large sections of the model). The _zpt_check file is more suited to viewing the values at individual zpts.

Attributes of _zpt_check

Attribute Name Attribute Description
n Row number in the TUFLOW domain
m Column number in the TUFLOW domain
Type The type of point - in TUFLOW the topography is defined by the elevations at the cell centres, mid-sides and cell corners.

Please refer to section 4.4.4 of the 2010 manual for more detailed description of these.

The types are:

  • C The ZC - the cell centre
  • U The ZU - the mid-side to the right of the cell
  • V The ZV - the mid-side to the top of the cell
  • H The ZH - the cell corner to the top right hand corner of the cell
Elevation The final elevation of the point.
Domain_Index The index of the model domain. This is the order with Start 2D Domain == <Domain Name> commands appears in the .tcf control file. For a single domain model this will be 1.


In the image below the TUFLOW model grid is shown with the 2d_zpt check file labelled by the Type attribute.
Check Files 2d zpt 01.jpg

In the image below the TUFLOW model grid is shown with the 2d_zpt check file labelled by the Elevation attribute.
Check Files 2d zpt 02.jpg

Back to TUFLOW check files.