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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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 IDV representative, > I just realized that, since yesterday, there is a new version of the > IDV software 4.0 that > replaces 3.1u1. What are the main differences between them? I am not > able to find > the differences in your IDV web site. > > I am planning to use IDV in a short training course in tropical cyclones and > the > instructions already given to the students requested to install the > 3.1u1 version > that was the latest a couple of weeks ago. > Perhaps, it does not matter too much if I (as instructor) use this > version and some > students do not pay attention by installing the new (4.0) version. However, I > prefer to ask in advance to avoid some problems or know what to expect. > The IDV training will be on March 18. > > An alternative for me is to use the 4.0 version during the course :) > > Thanks, > Luis M Farfán. > > Hi Luis, It is better to use the new 4.0 version. The difference between 4.0 and 3.1 can be found in the Release Note in our announcement: http://www.unidata.ucar.edu/software/idv/docs/userguide/ReleaseNotes.html The grid trajectory is useful to visualize the model output of the hurricane. IDV support Ticket Details =================== Ticket ID: ODM-832381 Department: Support IDV Priority: Normal Status: Closed