This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> Dear sir > Thanks for IDV . > I want to know about Frontogenesis from theta and the wind. > I can not find it > in the lab manual. You find Frontogenesis from theta and wind > I can draw wind and theta but front is complicated....I can not find it > please advise > > kind regards > Nasreen Eisakhani > > I think the Frontogenesis is not a derived formula, but it is in our Jython library. So you need to enter the the formula through the grid interface: Formulas > Grids > Define a grid diagnostic when the interface popup, enter frnt(S,V), and then select S and V from your dataset. S is theta and V is wind vector. ..... Yuan Ticket Details =================== Ticket ID: UIQ-399826 Department: Support IDV Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.