Tutorial M02 002 GIS Inputs QGIS GPKG: Difference between revisions

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Created page with "= Introduction = QGIS is used to create, import and view input data.<br> <br> = Method = Use the QGIS Browser Panel to create a new GeoPackage Database: <ol> <li>From the Br..."
 
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Within the QGIS Browser Panel, navigate to the '''Module_02\Tutorial_Data''' folder. Drag and drop the following layers into the '''M02_002.gpkg''' database:
:*'''2d_zsh_M02_landscape_002_L'''
:*'''2d_zsh_M02_landscape_002_P'''
:*'''2d_zsh_M02_landscape_002_R'''
:*'''2d_mat_M02_landscape_002_R'''
 
Create two polygons, one raises the elevation to a set height and another raises the elevation by a set amount. <br>
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<li>Tick the 'Regions' Geometry Type.
<li>In the Spatial Database Options, select 'All to one'. Navigate to the '''Module_02/TUFLOW/model/gis''' folder and select '''M02_002.gpkg'''. Click Save and hit 'OK' and hit 'OK'.
<li>The 2d_zsh'''2d_zsh_M02_cut_002''' file appears in the layers panel. Zoom to the channel where it meets the north road embankment. <br>
<li>Right click on the '''2d_zsh_M02_cut_002_R''' to toggle on Editing and select 'Add Polygon Feature'.
<li>Digitise a polygon similar to below, terminate the region and enter the following data in the attributes dialog: <br>
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<ol>
<li>Load into QGIS the '''2d_mat_M02_landscape_002_R''' file by, either: <br>
:*Drag and drop the '''M02_002.shp filegpkg''' into the QGIS workspace and select ''2d_mat_M02_landscape_002_R''', or
:*In the Browser Panel, navigate to the '''TUFLOW/model/gis/M02_002.gpkg''' and double click the '''2d_mat_M02_landscape_002_R''' layer.
:*Select Layer > Add layer > Add Vector Layer and navigate to the '''Module_02\TUFLOW\model\gis''' folder.
<li>Inspect the file:
:*The materials file contains polygons that represent the updated land use due to the topography modifications.