I am trying to use the ModelBuilder for my master thesis. What I want to do is:
1) Create two new fields in a watershed feature class (contains several watersheds)
2) Use the watershed feature to clip each single watershed from a DEM
3) Calculate the hypsometric integral for each watershed
4) Write the derived values: a)"Value" = Number of watershed, b)"integral"= hypsometric integral for each watershed into the new fields of the input watershed feature class. ( I have drawn arrows in the screenshot.
The steps 1-3 are OK, that's working, but I have no idea how to do step 4. Is this possible? Is there a more elegant solution than my idea?