Previous: Doing More with Jython Next: Layout Models Table of contents Index Glossary Images Frames U09-NRM-127: The role of Distributed Data Access Technologies in NRM - for ITC-IDV version 2.7 > Advanced Topics > Diagnostic Functions: Formulas and Jython

5.2.5 Derived Data and Formulas
The IDV uses the Formula infrastructure to also automatically create derived products from loaded data sources. These derived products show up in the list of Fields under a "Derived" tab.

  1. Let's look at the Horizontal Advection formula
  2. Display Temperature Advection from the derived formula list
  3. Now, let's create a system formula for Temperature advection that will show up when a grid is loaded.
  4. Let's just look at the derived.xml file in:

    /home/idv/.metapps/DefaultIdv

    to see what the formula looks like.

 


Previous: Doing More with Jython Next: Layout Models Table of contents Index Glossary Images Frames Français Español Portugese Italian Japanese Korean Russian Chinese-simp Chinese-trad Dutch German Greek Français Español Portugese Italian Japanese Korean Russian Chinese-simp Chinese-trad Dutch German Greek

U09-NRM-127: The role of Distributed Data Access Technologies in NRM - for ITC-IDV version 2.7 > Advanced Topics > Diagnostic Functions: Formulas and Jython