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WaterGEMS - Modelbuilder -Importing from shapefile -creating nodes at pipe crossings

Hi,

I am importing pipe from a shapefile and pipes are crossing each other without being connected. The source file is obviously not created to that effect and was probably only for visual purposes.

Inside WaterGEMS there is a function where one can "Split" the pipe and connect it to nodes.

Is there a way in which model builder can do these automatically or does this have to be corrected in the source file?

Regards,

Rossouw

Parents
  • In my experience it is more important for the WaterGems model to be correct than the GIS.  With this in mind, import the initial GIS shapefiles into WaterGems, then fix all the connectivity issues within WaterGems (this can be a long, tedious process - ask me how I know). This is the only way I know of to assure that your model is properly connected.

    After you get your model piping and valves all connected properly, export these files back to shapefile format and give them to the GIS department and tell them to use these.

    For future revisions to the piping system I have found that it is better to make the changes within WaterGems (I use WaterCad, but Gems is a superset of Cad), then export these to shapefiles, then give them to the GIS dept.

    Doing it this way assures that you always have a properly connected model that will run.  It's more work for you, but in the long run you have more confidence that your model is topologically correct.

    And the GIS people will probably thank you.

Reply
  • In my experience it is more important for the WaterGems model to be correct than the GIS.  With this in mind, import the initial GIS shapefiles into WaterGems, then fix all the connectivity issues within WaterGems (this can be a long, tedious process - ask me how I know). This is the only way I know of to assure that your model is properly connected.

    After you get your model piping and valves all connected properly, export these files back to shapefile format and give them to the GIS department and tell them to use these.

    For future revisions to the piping system I have found that it is better to make the changes within WaterGems (I use WaterCad, but Gems is a superset of Cad), then export these to shapefiles, then give them to the GIS dept.

    Doing it this way assures that you always have a properly connected model that will run.  It's more work for you, but in the long run you have more confidence that your model is topologically correct.

    And the GIS people will probably thank you.

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