Hello i have a problem with Hec-Ras function named in title. When i create polygon/area i get this msg:
Not shure if picture is uploaded. But msg is :
Associated layer : not yet associated with this geometry.
Therefore i can't eddit area or asign different manings N. Please does anyone know how to fix this problem ?
A "cheat" is to draw a storage area that covers your geometry and then go into mapper, right click on the storage area layer and export to shapefile. Now you have a shapefile that you can import as a landcover. This will let you use the regions tool. You can draw multiple SA for differing land classes if you wish.