• Use the File→Save Data in Cache menu in the control for the Windspeed from u and v display to save the data to the cache. When the dialog pops up, enter windspeed (formula).
• Use the File→Save Data in Cache menu in the control for the Windspeed (from GridRelative_u & GridRelative_v) display to save the data to the cache. When the dialog pops up, enter windspeed (system).
• In the Field Selector window, click on the Formulas data source and select the System -> Simple difference a-b field and the Contour Plan View display, then click the Create Display button.
• From the Field Selector window that pops up, select one of the cached windspeeds for a and the other for b, then click OK
• The fields will be differenced and nothing will display because they have the same values.