Folks,
Following up on the helpful input from Don & Stuart, I've posted a sample
NetCDF file that has no longitude or latitude variables that is still
readable in IDV (and the NetCDF/Java library):
http://stellwagen.er.usgs.gov/rps/share/example_xy.nc
To create it, I just took a file that Don gave me a while ago and
removed the lon,lat variables to prove that it worked.
A small bundle that shows that IDV can read this file is at:
http://stellwagen.er.usgs.gov/rps/share/example_xy.xidv
NOTE: This file has another interesting characteristic: the vertical
coordinate is 4D, varying in both x,y,z and time, so is specified
explicitly. CF doesn't have a convention for this, but the Unidata
Common Data Model does. Scroll to the bottom of this page:
http://www.unidata.ucar.edu/software/netcdf-java/reference/StandardCoordinateTransforms.html
to see the technical specification for "explicit_field", and then look
at the file above to see it in action.
-Rich
--
Dr. Richard P. Signell (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598
