InfoWorks ICM to TUFLOW: Difference between revisions

Although the InfoWorks ICM data formats are proprietry, it is relatively easy to use the Open Data Export Centre within InfoWorks ICM to export the model geometry data to open GIS layer formats (both shapefile and MIF/Mid format). The following steps will outline exporting to shapefiles but similar can be undertaken for MIF/MID.

To open the Open Data Export Centre in InfoWorks ICM, open your network in the geoplan, select the relevant scenario, and go to Network->Export->Using Open Date Export Centre. You’ll be presented with the following dialog which allows you to export the InfoWorks network data to a variety of formats.

 

The data in InfoWorks ICM is stored in a number of database tables for each network type (eg, a separate table for nodes, conduits, 2D zones etc…).

To get a quick idea of the 1D network, it’s possible to export 2 tables, ‘All Links’ and ‘All Nodes’. Set the Export type to ‘Shape File’ and select ‘Automap’ to export the InfoWorks fields. Provide a filename and save location and click Export.

 

 

Once exported the two shape files can be opened in GIS to view the network links and nodes.

 

Within the Open Data Export Centre, it is possible to provide the Export Field Names and to map to them from the internal fields within the InfoWorks tables. This allows you to export directly to a shapefile with a TUFLOW format. For example, in the below image, the Export fields are set up to replicate the TUFLOW 1d_nwk file format. The relevant InfoWorks fields are then mapped to these to convert the InfoWorks format to a TUFLOW shapefile format.

 

Once the mappings have been set up, they can be saved as a Config file by using the ‘Save Config…’ option. Once a copy has been saved, the config file can be re-used to apply the same field mappings to subsequent exports. It should be noted that not all TUFLOW fields have an equivalent InfoWorks field and vice versa, therefore in some situations there will be some modeller input required to ensure the data is imported in the correct manner. It is also possible to export all InfoWorks fields at the end of the shape file and then use GIS to post-process this for conversions and other simple translations (for example set the TUFLOW pipe type to ‘C’ of the InfoWorks Shape type is ‘Circ’). Please contact support@tuflow.com for an example config file which contains mappings for nodes, pipes, 2D components and 1D structures. The config file is a work in progress but provides a good starting point for the conversion and further mapping of fields between InfoWorks and TUFLOW. Note, that currently the config file is set up to export geometry tables only and will not export tables containing cross-sections, head-discharge curves and similar.