Hi Eric:
It is unclear if what you are asking is that you only want the TDS to
display a subset of the data to the user, or if you want to know how
a user can subset the data that is being served by the TDS. If the
latter, what applications do you use or do you just want to use the
hrml page.
Either way, is the TDS publicly accessible?
Thanks,
-Roy M.
On Jan 7, 2008, at 4:04 PM, Eric Davies wrote:
I've got the Thredds Data Server installed and I'm trying to use it
to subset a 3D grid (depth, latitude, longitude) large netcdf file.
The netcdf file was generated by a third parties software, and is
probably not compliant with anything. As subset of its schema is
shown below.
If I rename some coordinate variables, I should be able to make it
compliant with some convention. My question is how do I most
efficiently extract a 3D subset? I want to extract a subset of
depth as well as a subset of longitude and latitude.
Any ideas would be most appreciated.
Thank you.
Eric.
netcdf d7110.subvol {
dimensions:
TIMESTEP = 1 ;
LONGITUDE_T = 481 ;
LATITUDE_T = 241 ;
LONGITUDE_U = 481 ;
LATITUDE_U = 241 ;
DEPTH = 66 ;
DEPTH_EDGES = 67 ;
variables:
int TIMESTEP(TIMESTEP) ;
TIMESTEP:long_name = "Timestep" ;
float LONGITUDE_T(LONGITUDE_T) ;
LONGITUDE_T:long_name = "Longitude" ;
LONGITUDE_T:units = "degrees" ;
LONGITUDE_T:Format = "F10.4" ;
float LATITUDE_T(LATITUDE_T) ;
LATITUDE_T:long_name = "Latitude" ;
LATITUDE_T:units = "degrees" ;
LATITUDE_T:Format = "F10.4" ;
float DEPTH(DEPTH) ;
DEPTH:long_name = "Depth" ;
DEPTH:units = "cm" ;
DEPTH:Format = "F5.2" ;
DEPTH:positive = "down" ;
DEPTH:edges = "DEPTH_EDGES" ;
float POTENTIAL_TEMPERATURE__MEAN_(DEPTH, LATITUDE_T,
LONGITUDE_T) ;
POTENTIAL_TEMPERATURE__MEAN_:long_name = "potential
temperature
(mean)" ;
POTENTIAL_TEMPERATURE__MEAN_:units = "C" ;
POTENTIAL_TEMPERATURE__MEAN_:_FillValue = 0.f ;
POTENTIAL_TEMPERATURE__MEAN_:LEVEL = 0 ;
POTENTIAL_TEMPERATURE__MEAN_:T_GRID = -1 ;
....
}
**********************************************
Eric Davies, M.Sc.
Barrodale Computing Services Ltd.
Tel: (250) 472-4372 Fax: (250) 472-4373
Web: http://www.barrodale.com
Email: eric@xxxxxxxxxxxxx
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Shipping Address:
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University of Victoria
Victoria BC Canada V8W 3W2
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