• TRex Wizard DEM Issue

    I'm running a sewer model in SewerGEMS 10.01.00.70 through ArcMap 10.5. I was looking to use a DEM file to apply elevations to some nodes through the TRex Wizard, however I am receiving the following error: "Object reference not set to an instance of…
  • RE: Trex

    Hi Simon, Yes, you'll need to project the model file so it uses the same coordinate system as the DEM file if you want them to overlay in WaterGEMS standalone. You shouldn't have a problem extracting the node elevations from the DEM once they are overlaid…