reversed-coordinate axes

[Emilio Mayorga <emiliom@xxxxxxxxxxxxxxxx>]

The ferret manual says the following about reversed-coordinate axes:

3.5.6 Reversed-coordinate axes 

NetCDF axes may contain monotonically decreasing axis coordinates
instead of monotonically increasing coordinates. Ferret will hide this
aspect of the file data ordering. 


My question is: are there *any* limitations or disadavantages to using
reversed-coordinates? Are computations less efficient? I want to write
my netcdf files using monotonically *decreasing* latitude coordinates,
to make the file more directly compatible with the preferences of other
software; for instance, right now if I use something like
SET REGION/ *an XY region at one time step*
LIST/FORMAT="STREAM"/FILE="uff.bil" uffvariable
the raw binary image will come out "upside down", because that's how the
data is written in the netcdf file.

Thanks.

Emilio Mayorga
________________________________________________________________
University of Washington	
School of Oceanography			emiliom@u.washington.edu
Box 357940				ph. (206) 543-5334
Seattle, WA  98195-7940	  USA		FAX (206) 685-3351
http://boto.ocean.washington.edu/staff_pages/emilio