1D Integrity Tool - Tutorial: Difference between revisions

The following exercises will take the user through the various tools using a pipe drainage network which contains a number of common errors which are found in these types of datasets.

 

 

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3. Review the dataset and use the [[QGIS TUFLOW Styles | ‘Apply TUFLOW Styles to open layers’]] tool, [[File:Check files open.png||30px]], to theme the data.<br>

[[File:Sub-surface drainage overview.png]]<br>

*'''3. Input Tables''' - Input location of 1d_ta lines such as 1d_xs, 1d_cs, and 1d_hw. Use dropdown box and '+' button to add layers as inputs to tool.<br>

*'''4. Input DEM''' - Input raster. Currently only 1 input is supported, so if you are using tiled rasters datasets, they would need to be mosaiced into a single raster prior to running the tool.<br>

*'''6. Status Bar''' - Contains the progress bar and status of the integrity tool. Includes information such as the current active task being performed (if one of the tools is running), and the status of the previously run tool.<br>

*'''7. Run''' - Runs the currently active tool (active tool determined by the current active tool tab - prior to plugin version 3.2 a radio button was used to select the active tool).<br>

=Using the 1D Integrity Tool=

 

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<li> <u>[[Integrity_Tool_-_Empty_Geometry_Check|Empty Geometry Check]]</u> --> This tool loops through the inputs file and identifies any features that have an empty or NULL geometry.

<li> <u>[[Integrity_Tool_-_Continuity_Tool|Continuity Tool]]</u> -->The continuity 1D integrity tool will check all 1D inputs for downstream continuity based on the selected processing options. This is similar to the above Flow trace check but will undertake the assessment on the whole set of inputs rather than upstream of a selected link.

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=Summary=

The 1D integrity tool provides a set of checks and fixes to ensure that the 1D input data is suitable to be used within a TUFLOW hydraulic model. The checks assess common errors within 1D datasets which will either cause TUFLOW errors, or influence results. Commonly these common errors are a consequence of digitisation and given the nature of large urban drainage networks are difficult to spot visually. The automated, 1D integrity tools provide a quick and easy approach to allow the modeller to be proactive in identifying problematic parts of a 1D system prior to loading into TUFLOW.