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> Hi Yuan, > Thanks for the quick reply. The attached temperature, salinity profile > (from GTSPP) is very typical of the data I'm dealing with. > Murray > > Murray, The data structure is very odd, I am not sure the ncml can work on this dataset. Looking at your dataset structure: float salinity(time=1, depth=19, latitude=1, longitude=1); :long_name = "Salinity"; :short_name = "psal"; :standard_name = "salinity"; :units = "PSU"; :data_min = 33.92f; // float :data_max = 34.15f; // float :C_format = "%9.4f"; :FORTRAN_format = "F9.4"; :_FillValue = -99.0f; // float :Station_Duplication_Flag = "N"; :Digitization_Method = "7"; :Standard = "2"; :Deepest_Depth_m = 60.0f; // float :epic_code = 41; // int And the data from Alan: float salinity(depth=78, lat=689, lon=1440); :_FillValue = -32000S; // short :missing_value = -32000.0f; // float :long_name = "Salinity"; :units = "psu"; :FORTRAN_format = "e13.6"; :coordinate_system = "orthogonal_constant-spacing"; :Navo_code = 16; // int Changing the direction can be done by adding: <variable name="depth" shape="depth" type="double"> <attribute name="positive" value="down" /> </variable> But this doesn't help since the IDV can not figure out the type of your data. Yuan > ----- Original Message ----- > From: "Unidata IDV Support" <address@hidden> > To: <address@hidden> > Cc: <address@hidden>; <address@hidden> > Sent: Tuesday, March 13, 2012 3:22 PM > Subject: [IDV #ILT-566886]: vertical profiles with depth, not altitude > > > >> Full Name: Murray Brown > >> Email Address: address@hidden > >> Organization: IOC Marine Data Mgt. Training Program > >> Package Version: > >> Operating System: > >> Hardware: > >> Description of problem: Don, > >> I'm not downloading NC files, so don't believe I can use the ncml > >> "converter" that changes positive heights to negative depths. You > >> offered to show an earlier requester how to create a new DATA SOURCE TYPE > >> for this situation. Could you please help me with that now. Thanks. > >> > >> Murray Brown > >> > >> > > Hi Murray, > > We use ncml to modify certain attributes of the dataset, there is > > really no difference between local or remote dataset. > > I can help you create the new data type if you send me a sample file. > > > > > > Yuan > > > > Ticket Details > > =================== > > Ticket ID: ILT-566886 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > Ticket Details =================== Ticket ID: ILT-566886 Department: Support IDV Priority: Normal Status: Open