Re: [thredds] FMRC URL's: dataset name now matters in TDS 4.2

  • To: Rich Signell <rsignell@xxxxxxxx>
  • Subject: Re: [thredds] FMRC URL's: dataset name now matters in TDS 4.2
  • From: "Arthur A. Person" <person@xxxxxxxxxxxxx>
  • Date: Tue, 30 Nov 2010 09:38:11 -0500 (EST)
John et. al.,

I think the server should be configurable to supply whatever URL the administrator wants to set up... however, this doesn't solve the name collision problem. It may be that more thought needs to be put into standardization of the names for data sets... maybe even a registration system whereby users can create names, or at least submit them for acceptance, as a standard name? Just sticking the name into the URL will solve the problem short-term, but I'm concerned that this will morph into many instances of names for identical products and make things more confusing. Since I'm pretty new to THREDDS, perhaps I'm missing something here... correct me if I'm wrong...


On Mon, 29 Nov 2010, Rich Signell wrote:


You *were* fixing a problem that was brought up at the NOAA
GEOIDE/DMIT/UAF meeting in Seattle two weeks ago.   Some of us were
complaining that when doing a search across federated THREDDS servers,
the datasets that came back all just said "Best Time Series" without
any indication of what dataset they were derived from.  So we asked if
this could be modified to have the "best" tacked onto the end of the
original dataset name.

I can see that this causes short-term problems, as John Maurer is
pointing out, as you would have to change scripts and let users know
the URLs have changed.  But I'd still rather trade the short term
inconvenience for the long term benefit.


On Mon, Nov 29, 2010 at 7:49 PM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:
On 11/29/2010 5:13 PM, John Maurer, IV wrote:

Hi All,
Prior to TDS 4.2, you used to be able to change the name of a dataset
without adversely affecting the URL to its FMRC components (Best Time
Series, Constant Forecast, etc.). Although the title is used to construct
the URL, everything up to the final _best.ncd used to be arbitrary. Now I'm
finding that a change in the dataset name will break the FMRC URL's. For

The name gets appended to _best.ncd: "WRF Oahu Regional Atmospheric Model
(1.5km)". It used to not matter what went before _best.ncd, and in fact you
could even just use the following URL:

Now if I change that name to something else (e.g. "WRF Oahu Regional
Atmospheric Model"), the old URL breaks because it's now expecting the

Is this the new way it will behave or is it a bug that can be fixed?

Hi John:

I thought I was fixing a problem. Is there a reason you prefer it the
previous way?

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