Re: netCDF troubles

[Ansley Manke <ansley@xxxxxxxxxxxxx>]

Hi Brian,
Ferret variables may only have 4  or fewer dimensions.  See
the on-line
Ferret
Users Guide, Ch10 Sec3.2.2. Variables:
> Ferret variables may have from 1 to 4 dimensions. If any of
> the axes have the special
> interpretations of: 1) latitude, 2) longitude, 3) depth, or 4) time
> (date), then the relative order of those axes in the CDL variable declaration
> must be T, then Z, then Y, and then X, as above. Any of these special axes
> can be omitted and other axes (for example, an axis called "distance")
> may be inserted between them.
Ferret does adhere to the COARDS standards for NetCDF data files, but the
Ferret
framework allows just four dimensions and so in this case we apply
a subset of
those standards.  We will have to clarify the Ferret documentation.

Ansley Manke
 
 

Brian Schlining wrote:

I'm trying to read a netcdf file into ferret and I get the following error:

*** NOTE: Unsupported netCDF # of axes for variable Ed_Wet

The variable in question is dimensioned as follows:

float Ed_Wet('wavelength2', 'time2', 'depth2', 'latitude', 'longitude')

The ordering and number of dimensions were chosen following the
recommendations in
http://ferret.wrc.noaa.gov/noaa_coop/coop_cdf_profile.html which has the
following example for 5D variables:

float my_variables(param_value, time, height, lat, lon).

All 5 dimensions are co-ordinate variables (i.e they have dimensions of
the same name). Wavelength2 and time2 are both 1D arrays containing
sorted unique values. Depth2, latitude and longitude are all scalars
(single values).

Is there something I'm missing here? Can ferret handle a 5D variable?
Any feedback is appreciated.

Thanks in advance

-- B
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Brian Schlining
Research Technician
Monterey Bay Aquarium Research Institute
brian@mbari.org
(831) 775-1855
http://www.mbari.org/~brian
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

--
Ansley Manke  Pacific Marine Environmental Laboratory  Seattle WA  (206)526-6246