Aaron,
If you guys have essentially tabular data in CF-1.6 compliant netcdf
files (which it looks like you do), and want to deliver CSV, JSON and
other formats for users, you might consider setting up an ERDDAP
server in addition to THREDDS. Folks love that you can download CSV,
JSON, .mat files, etc using RESTFUL syntax, just like the NCSS.
ERDDAP has the ability to read directly from CF-1.6 NetCDF files:
http://coastwatch.pfeg.noaa.gov/erddap/download/setupDatasetsXml.html#EDDTableFromNcCFFiles
and installation/setup/maintenance of ERDDAP has become a lot easier
now that it's been dockerized:
https://hub.docker.com/r/axiom/docker-erddap/
Here's a site installed with ERDDAP container that hosts CF-1.6 netCDF files:
http://hydromet-thredds.princeton.edu:8000/erddap/info/index.html?page=1&itemsPerPage=1000
Here's a example request of data from just two variables for the last 7 days:
1. as htmlTable:
http://hydromet-thredds.princeton.edu:8000/erddap/tabledap/butler.htmlTable?time,RH,TCroof_Avg&time%3E=now-7days&time%3C=now
2. as CSV
http://hydromet-thredds.princeton.edu:8000/erddap/tabledap/butler.csv?time,RH,TCroof_Avg&time%3E=now-7days&time%3C=now
3. as JSON
http://hydromet-thredds.princeton.edu:8000/erddap/tabledap/butler.json?time,RH,TCroof_Avg&time%3E=now-7days&time%3C=now
I say this as a happy THREDDS Data Server user -- no reason not to
have both TDS and ERDDAP, but ERDDAP is especially nice for tabular
data.
-Rich
On Mon, Feb 29, 2016 at 6:40 PM, Aaron Sweeney - NOAA Affiliate
<aaron.sweeney@xxxxxxxx> wrote:
> Hi,
>
> I am providing netCDF data via TDS and using NCSS (subset service) to
> provide the option of downloading data as CSV.
>
> Is it possible to deselect latitude, longitude, and station number in a
> time-series netCDF file that contains only one station with one latitude and
> longitude? The resultant CSV files contain extra columns for station
> number, latitude, and longitude. Because these values never change, this
> seems like a waste of bandwidth. In my netCDF files, I have specified the
> dimension of the timeSeries to 1, rather than leave it out entirely.
>
> Here's a live example where I'm selecting four physical variables via
> NCSS, but I also get back station number, latitude, and longitude:
>
> http://www.ngdc.noaa.gov/thredds/ncss/dart_bpr/processed/54401/54401_20090912to20130828_qc.nc?var=seafloor_pressure_abs_quality_controlled&var=seafloor_pressure_abs_modelled&var=seafloor_pressure_residual&var=temperature&temporal=all&accept=csv
>
> Thanks,
> Aaron
>
> --
> Aaron D. Sweeney
> Water Level Data Manager
>
> Cooperative Institute for Research in Environmental Sciences (CIRES)
> University of Colorado at Boulder
> and
> NOAA National Centers for Environmental Information
> formerly NOAA's National Geophysical Data Center
> 325 Broadway, E/NE42
> Boulder, CO 80305-3328
>
> Phone: 303-497-4797, Fax: 303-497-6513
>
> DISCLAIMER: The contents of this message are mine personally and do not
> necessarily reflect any position of NOAA.
>
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--
Dr. Richard P. Signell (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598
