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ITC-IDV Workshop for NGIC > Accessing and Displaying Data > Diagnostic Functions: Formulas and Jython

3.2.0 Basics of IDV Formulas

Formulas in the IDV are one-line mathematical expressions to derive new values from data available.

The IDV comes with some Formulas. Here is an example of using one.

  1. Using an IDV System Formula
  2. Requesting the Formula to be Computed and Displayed
  3. You can make your own formulas. Your formulas are saved so you can build a library of your own derived quantities, using data you have.

  4. Creating a new formula for wind speed from u and v wind components
  5. Sub-setting times in the data source
  6. Requesting the new Formula to be Computed and Displayed
  7. Compare to the IDV's derived wind speed
  8. Extra - Calculate a difference between the system derived wind speed and the wind speed from your local formula using the simple difference formula. What would you expect the result to be? Answer Show popup

 


Previous: Diagnostic Functions: Formulas and Jython Next: Jython Methods Table of contents Frames User guide
ITC-IDV Workshop for NGIC > Accessing and Displaying Data > Diagnostic Functions: Formulas and Jython