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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
> Hello, > > Thank you. I have uploaded the two netcdf files I discuss below. > > Sonja I am checking the dataset named lma_Redoubt_20090323_1230.nc, is this the one you uploaded? The problem is that there is no grided variable in this file, only lat/lon/time coordinate variables. You need to add at least one real variable, such as temperature or pressure, based on these coordinate variables. Yuan > ________________________________________ > From: Unidata IDV Support [address@hidden] > Sent: Friday, May 02, 2014 7:59 PM > To: Behnke, Sonja > Cc: address@hidden > Subject: [IDV #SUF-224604]: netcdf file formatting issue > > Sonja, > > Can you upload your data here and let us know when it is uploaded? > > http://motherlode.ucar.edu/repository/alias/idvupload > > Best, > > Unidata IDV Support > > > > Hello, > > > > I am trying to collaborate with a colleague who uses IDV to visualize her > > modeling results. I have my own data that I would like to overlay on hers > > using IDV. I use IDL, and I am trying to export my data into netCDF > > format. I know how to do this, but I don't know what IDV is expecting of > > me. Let me describe my data: > > > > At simplest I have three arrays: time, latitude and longitude. > > > > time[i] = time of event > > latitude[i] = latitude of event > > longitude[i] = longitude of event > > > > I wrote a program in IDL to make a netcdf file of three variables: time, > > latitude, and longitude. I know I did this correctly because I reread the > > file back in to IDL and was able to extract my arrays. > > > > But, IDV doesn't know what to do with my data. It complains that I don't > > have any "gridded" data in my file. So, I took my data in IDL and made a > > 200x200 element array of the density of my events with respect to lat and > > lon. So each element of the array is a pixel on a map, and the value > > represents how many events were in that pixel. I saved that 200x200 array > > in a netcdf file, but alas, IDV doesn't get it. > > > > So, I realize I don't know what IDV is expecting here with my data, but I > > would like to format my data so that it understands it and I could use IDV > > to plot it on a map. > > > > Can you help with this? > > > > Thank you, > > > > Sonja Behnke > > > > > Ticket Details > =================== > Ticket ID: SUF-224604 > Department: Support IDV > Priority: Normal > Status: Open > > Ticket Details =================== Ticket ID: SUF-224604 Department: Support IDV Priority: Normal Status: Open