1

Can anyone help me in this? Many street network datasets lack z elevation fields needed to model overpass and tunnels (the F_ZLEV and T_ZLEV fields). Although my road network spatial database contains bridges and tunnels as features, I need to create the two fields from it. Is there a quick fix to automate this. I am thinking of something like:

  • Select all road links and allocate F_ZLEV=0 and T_ZLEV=0
  • Select all bridges which at their link start connect to road link and allocate F_ZLEV=0 and T_ZLEV=1
  • Select all bridges which at their link end connect to road link and allocate F_ZLEV=1 and T_ZLEV=0
  • Allocate all other bridge links F_ZLEV=1 and T_ZLEV=1.

Any ideas will help.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.