[thredds] Netcdf subsets

• To: <thredds@xxxxxxxxxxxxxxxx>
• Subject: [thredds] Netcdf subsets
• From: <Terry.Rankine@xxxxxxxx>
• Date: Fri, 11 Jul 2014 04:33:35 +0000

Hi Guys

 

My motivation or underlying question is "can I do the things I want with
NSS, and drop ERDDAP, or do I need it still?"

 

 

 

I have a 4.3.x (latest-ish - say 2 months ago) TDS server installed with a
few NetCDF4c files behind it.

 

I want to subset them - and preserve their spatial information to use for
other apps

 

Currently they are in UTM grids (UTM zone 50).

http://vhirl-dev.csiro.au/thredds/fileServer/dem/busselton-final.nc

http://vhirl-dev.csiro.au/thredds/ncss/grid/dem/busselton-final.nc/dataset.x
ml

 

 

1. Can the netcdfSubset service take my 'original' CRS information for a
subset? 

http://www.unidata.ucar.edu/software/thredds/current/tds/reference/NetcdfSub
setServiceReference.html

 

2. What is in the output? My CRS or Thredds internal CRS - GDAL info is a
little confused about the CRS. What CRS is Lat/Long taken by the service in?

 

3. What is the request-API? 4.2 seems to have different options to 4.3, and
I have not got 4.5 installed - where is the webpage describing the API's for
each version?

 

 

Lastly:

We have previously use ERDDAP to generate the netcdf subsets for us - Is
anyone else using that pattern, or if all we are after is netcdf support -
can they see any issues with us switching over?

 

Regards

Terry Rankine

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