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Check Files 2d grd: Difference between revisions

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== Introduction ==
This pagespage contains information on the attributes of the _grd_check file. This GISfile contains a region object for each active (cell code 1) or nullinactive (cell code -1) cell. A number of the output attributes are only written if certain model features are enabled. For example, the '''Soil_ID''' attribute is only included if any soil features are used in the model.<br>
 
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There are variations in the output attributes for models using Sub-Grid Sampling (SGS) and/or Quadtree. These variations are noted below. <br>
There are a number of attributes that are only output for TUFLOW GPU models, as the GPU model is a cell centred scheme certain properties such as Manning's roughness and Form Loss are applied at the cell centre, whilst in TUFLOW these are applied at the cell side (refer to the <u>[https://docs.tuflow.com/classic-hpc/manual/latest/ TUFLOW Manual]</u> for a more detailed explanation). These GPU only attributes are noted in the table below.<br>
 
== Attributes of grd_check ==
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| Material||The material ID.
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| ZC <br>(or [[#SGS_Specific_Attributes|ZMin]])||The elevation within the cell.
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| IWL||The initial water level value. If the initial water level set in the model is below the cell elevation (ZC) or if no initial water level has been set, the cell elevation plus the model wet / dry depth is output. Note, this value is rounded to 3 decimal places.
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=== Quadtree specificSpecific attributesAttributes ===
{| align="center" class="wikitable" width="75%"
! style="background-color:#005581; font-weight:bold; color:white;"| Attribute Name
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== Features ==
This file is very useful to apply a style or thematic map to. and Seeit helps for visualising the [[TUFLOW_Check_Files#Tips_for_Visualising_Check_Files|final Tipsproperties for visualising checklarge files]]models.<br>
This allows a very easy way to visualise the final properties for large models.
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A grd_check_grd_check file styled by the soilmaterial ID is shown below (in QGIS).<br>
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[[ File:Grd check SoilID12d_grd_check_01a.JPGpng]]<br>
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A _grd_check file for a Quadtree model is shown below. It has been styled with the default TUFLOW styling.<br>
An example of a grid check file shaded by Material ID is below (in MapInfo).<br>
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[[File:2d_grd_check_02a.png]]<br>
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[[File:MI thematic map 04.jpg]]
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