Re: [thredds] NCSS: deselect latitude, longitude, and station number in single-station time-series?

  • To: Aaron Sweeney - NOAA Affiliate <aaron.sweeney@xxxxxxxx>
  • Subject: Re: [thredds] NCSS: deselect latitude, longitude, and station number in single-station time-series?
  • From: Ryan May <rmay@xxxxxxxx>
  • Date: Tue, 1 Mar 2016 14:16:37 -0700
Aaron,

The answer to your question is: no, the TDS can't do this...currently. We
do have plans to focus some improvements on our support for observational
point data, so we'll be sure to keep this use case in mind.

Sorry I can't give you a better answer for today, though.

Ryan

On Tue, Mar 1, 2016 at 1:58 PM, Aaron Sweeney - NOAA Affiliate <
aaron.sweeney@xxxxxxxx> wrote:

> Hi, Rich,
>
>       Thanks very much for the information on what additional formats
> ERDDAP supports.  Yes, many users just want CSV.  Unfortunately, ERDDAP is
> not a viable option for me at this time.
>
>       So I suppose it's still an open question if TDS can support this
> use-case through NCSS.
>
> Thanks,
> Aaron
>
> On Tue, Mar 1, 2016 at 12:38 PM, Signell, Richard <rsignell@xxxxxxxx>
> wrote:
>
>> 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.
>> >
>> > _______________________________________________
>> > thredds mailing list
>> > thredds@xxxxxxxxxxxxxxxx
>> > For list information or to unsubscribe,  visit:
>> > http://www.unidata.ucar.edu/mailing_lists/
>>
>>
>>
>> --
>> Dr. Richard P. Signell   (508) 457-2229
>> USGS, 384 Woods Hole Rd.
>> Woods Hole, MA 02543-1598
>>
>
>
>
> --
> 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.
>
> _______________________________________________
> thredds mailing list
> thredds@xxxxxxxxxxxxxxxx
> For list information or to unsubscribe,  visit:
> http://www.unidata.ucar.edu/mailing_lists/
>



-- 
Ryan May, Ph.D.
Software Engineer
UCAR/Unidata
Boulder, CO
  • 2016 messages navigation, sorted by:
    1. Thread
    2. Subject
    3. Author
    4. Date
    5. ↑ Table Of Contents
  • Search the thredds archives: