View source for TUFLOW CATCH Tutorial M01 GIS Inputs QGIS

= Introduction = 
QGIS is used to create, import and view input data.

= Method =
== TUFLOW Project Configuration ==
Configure workspace to set empty file directory????

== Supplied Input Files ==
A number of model input files have been provided in the '''TUFLOW_CATCH_Module_01\Tutorial_Data''' folder. Copy the following GIS files into the '''Modelling\TUFLOW\model\gis''' folder:
:*'''2d_bc_TC01_001_L'''
:*'''2d_mat_TC01_001_R'''
:*'''2d_bc_M03_culverts_001_P'''
:*'''2d_bc_M03_culverts_001_L'''
:*'''2d_bc_M03_culverts_001_R'''
:*'''1d_nwk_M03_culverts_001_L'''

Investigate the supplied files:
<ol>
<li>In Windows File Explorer, navigate to the '''Modelling\TUFLOW\model\gis''' folder. Drag and drop the above layers into QGIS. 
<li> Click on the 'Apply TUFLOW Styles to Open Layers' symbol from the TUFLOW Plugin toolbar.
<br>
[[File:tuflow_plugin_styles_open_layers.png]]<br>
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<li>The '''2d_bc_TC01_001_L''' layer contains the downstream boundary:
:*It is a stage-discharge (HQ) boundary with a 1% water surface slope
:*This layer contains the downstream boundary from <u>[[Tutorial_M01 | TUFLOW Tutorial Module 1]]</u>. The upstream boundary was removed as TUFLOW CATCH does not support <font color=red>source??</font>.
<li>The '''2d_mat_TC01_001_R''' layer contains the spatial definition of material types:
:* It is a supplementary material file to '''2d_mat_M01_001_R''', which is used in the TUFLOW tutorials. For more information, refer to <u>[[Tutorial_M01_Materials_QGIS | TUFLOW Tutorial Module 1]]</u>.
:* The material file is supplied with a QGIS style file (.qml) and displays the different material groups based on the Material ID. 
:* <font color=red> explain the materials more? or just show in vid</font>
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{{Video|name=}}<br>
<li>The other supplied layers represent culverts. For more information, refer to <u>[[Tutorial_M03#GIS_Inputs | TUFLOW Tutorial Module 3]]</u>.
<br>
{{Video|name=}}<br>
</ol>

== Receiving Polygon == 
A receiving polygon (2d_rp) is a single polygon that covers the downstream receiving waters. The TUFLOW HPC cells within the polygon will be removed from the TUFLOW HPC simulation. TUFLOW CATCH will write summary timeseries files that describe total water and pollutant mass fluxes entering the polygon. The receiving polygon must encompass the downstream 2d_bc boundary ('''2d_bc_TC01_001_L'''). <br>

Create the 2d_rp layer using the TUFLOW plugin:
<ol>
<li>Click on the 'Import Empty File' symbol from the TUFLOW plugin toolbar.
:* Select '2d_rp' from the Empty Type list. 
:* In the Run ID box, write 'TC01_001'.
:* Tick the 'Regions' Geometry Type and click 'OK'. The '''2d_rp_TC01_001_R''' appears in the QGIS Layers panel. 
<li>In the QGIS Layers panel, select (left click) '''2d_rp_TC01_001_R''' and toggle on editing. 
<li>Select 'Add Polygon Feature'.
<li>Digitise a polygon similar to below. Ensure that it encompasses the downstream 2d_bc boundary. Use the right mouse button to terminate the polygon and an attributes dialog will appear. Click 'OK' with no attribute information input. 
<li>Turn off editing to save the edits. <br>
<br>
{{Video|name=}}
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</ol>