Hi, I'm not sure what you mean by "volume data format". There are many different volume data formats, as a Google search for "volume data format" gets over 1800 hits. I don't know of any software to convert the data in a n-dimensional netCDF variable into any volume data formats for visualization. If you have a 3D variable, perhaps all you need to do is write the values out in floating point format in the right order. --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: OHL-649176 Department: Support netCDF Priority: Normal Status: Closed