Tutorial M01 Define Active Area QGIS GPKG: Difference between revisions

= Introduction =

QGIS is used to set an active model area.<br>

 

= Method =

<li>Click on the ‘Import Empty File’ symbol from the TUFLOW Plugin toolbar. <br>

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<li>This opens the Dialog shown below. The TUFLOW plugin accesses the 'Empty Directory' created when the project was configured and provides a list of files to choose from. It appends the 'Empty Type' to the beginning of the 'RUN ID' and the 'Geometry Type' letter to the end. This becomes the name of the file. Make the following selections:

<li>A layer called '''2d_code_M01_001_R''' in a region format with the relevant TUFLOW attributes is created. The TUFLOW plugin automatically creates a GeoPackage database called '''M01_001.gpkg''' in the '''Module_01\TUFLOW\model\gis''' folder, saves the '''2d_code_M01_001_R''' layer within it and opens it in the QGIS Layers panel.<br>

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<li>The region object in the '''Model_Boundary''' is not in the TUFLOW file format and needs to be copied into the '''2d_code_M01_001_R''' layer to have the correct attributes.

<li>Make the '''2d_code_M01_001_R''' layer editable by right clicking the layer and selecting 'Toggle Editing'.

<li>Select the '''2d_code_M01_001_R''' layer in the Layers panel by left clicking on it once. Select 'Edit' from the top QGIS tab and click 'Paste Features' from the drop down menu.<br>

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<li>At present the '''2d_code_M01_001_R''' is not active. Using the 'Identify Features' tool click on the '''2d_code_M01_001_R''' region in QGIS. The attribute 'Code' has a value of 'NULL'.

<li>Right click on the 'NULL' value and change the value to '1'. Click 'OK'. <br>

<li>Toggle the editing off to save the edits.<br>

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<li>Select ‘Apply TUFLOW Styles to Current Layer’.

<li>This updates the styling of the layer to display points on the region vertices and set the opacity to 25%.<br>

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