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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Roy,I'm written a C application using the OCAPI. The application produces the url, sends it to the server, and accepts binary results.
I want the server to do the subsetitng, and pass the subsetted results to my application. Presumably this
would be more efficient than asking the application to do it.The server is stuck behind our firewall I'm afraid. Presumably there is some configuration magic I still need to do to get ncss to work, if there is a way for me to use ncss effectively.
Eric. At 04:12 PM 1/7/2008, Roy Mendelssohn wrote:
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 ********************************************** Mailing Address: P.O. Box 3075 STN CSC Victoria BC Canada V8W 3W2 Shipping Address: Hut R, McKenzie Avenue University of Victoria Victoria BC Canada V8W 3W2 ********************************************** _______________________________________________ thredds mailing list thredds@xxxxxxxxxxxxxxxxFor list information or to unsubscribe, visit: http:// www.unidata.ucar.edu/mailing_lists/********************** "The contents of this message do not reflect any position of the U.S. Government or NOAA." ********************** Roy Mendelssohn Supervisory Operations Research Analyst NOAA/NMFS Environmental Research Division Southwest Fisheries Science Center 1352 Lighthouse Avenue Pacific Grove, CA 93950-2097 e-mail: Roy.Mendelssohn@xxxxxxxx (Note new e-mail address) voice: (831)-648-9029 fax: (831)-648-8440 www: http://www.pfeg.noaa.gov/ "Old age and treachery will overcome youth and skill."
********************************************** Eric Davies, M.Sc. Barrodale Computing Services Ltd. Tel: (250) 472-4372 Fax: (250) 472-4373 Web: http://www.barrodale.com Email: eric@xxxxxxxxxxxxx ********************************************** Mailing Address: P.O. Box 3075 STN CSC Victoria BC Canada V8W 3W2 Shipping Address: Hut R, McKenzie Avenue University of Victoria Victoria BC Canada V8W 3W2 **********************************************
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