Re: [ferret_users] Ferret does not recognize lon/lat axis

Hi,

When plotting variable hc300 from hc300_WOA13_decav_Reg1_clim.nc (ncdump -h included), with ferret v6.94 and pyferret 1.2 (ferret 6.96) on my Mac (OS X 10.11.3), the longitude and latitude axis are not recognized. If I run ncks -v hc300_WOA13_decav_Reg1_clim.nc toto.nc, the axis in toto.nc (ncdump -h included) are correctly recognized and interpreted. The difference between the two files seems to be only the order of the variables and the order of the attributes.

With ferret v6.94 on a Linux system, the axis are correctly interpreted.

Is this a bug or a feature, a problem with my install, etc ... ?

The file is written by python/cdms2, and I have no real control of the order of the attributes.

File hc300_WOA13_decav_Reg1_clim.nc is available at : https://files.lsce.ipsl.fr/public.php?service=files&t=ac7dda8e20bef5c40a6d9a4e69cec679

Olivier

marti@Spip-14:24:06-[Unix]/Analyses 👉 ncdump -h hc300_WOA13_decav_Reg1_clim.nc

netcdf hc300_WOA13_decav_Reg1_clim {

dimensions:

time_counter = UNLIMITED ; // (12 currently)

lat = 180 ;

lon = 360 ;

variables:

float time_counter(time_counter) ;

time_counter:units = "month" ;

float lat(lat) ;

lat:units = "degrees_north" ;

lat:standard_name = "latitude" ;

lat:axis = "Y" ;

lat:long_name = "Latitude" ;

float lon(lon) ;

lon:modulo = 360. ;

lon:long_name = "Longitude" ;

lon:standard_name = "longitude" ;

lon:units = "degrees_east" ;

lon:axis = "X" ;

lon:topology = "circular" ;

float hc300(time_counter, lat, lon) ;

hc300:name = "hc300" ;

hc300:coordinates = "time_counter lat lon" ;

hc300:long_name = "Heat content 0-300m" ;

hc300:standard_name = "integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content" ;

hc300:units = "J/m2" ;

hc300:missing_value = 1.e+20f ;

// global attributes:

:Conventions = "CF-1.0" ;

}

marti@Spip-14:24:09-[Unix]/Analyses 👉 ncdump -h toto.nc

netcdf toto {