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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
> Hi, > > I'm trying to use IDV to visualize some 3D model output over the U.S. > However, I'm having problems using my data in IDV to generate isosurface and > cross-section displays. In particular, it doesn't appears that the vertical > scale/dimension is getting read in properly. I'm getting the error message > included below. For the isosurface display, IDV is only plotting one > level/layer or the data is not appearing in 3D, only as a single layer. The > vertical scale of my data is in sigma coordinates. If necessary, I'd be happy > to send you some of my data. > > Error Message" "Unknown vertical coordinate with Unit null" > > Please let me know how my data/model output should be structured in the > netcdf file to ensure that the vertical scale/dimension is setup properly for > IDV. Also, is there a way to plot sigma coordinates or point IDV to use a > certain vertical scale from another file? > > Thank you, > Rebecca > 303-312-6867 > > Hi Rebecca, Sorry for the delay reply. Please upload a sample to our RAMADDA server: motherlode.ucar.edu/repository/alias/idvupload Yuan Ticket Details =================== Ticket ID: WPM-804362 Department: Support IDV Priority: Normal Status: Open