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> On Aug 20, 2014, at 8:33 PM, <Terry.Rankine@xxxxxxxx> wrote: > <snip> > What do others do for this problem? > Set the min and max to the 2.5% and 97.5% percentiles of the data being plotted. That usually gives pretty good results. -Mike > Regards > Terry > > > > -----Original Message----- > From: thredds-bounces@xxxxxxxxxxxxxxxx > [mailto:thredds-bounces@xxxxxxxxxxxxxxxx] On Behalf Of > Terry.Rankine@xxxxxxxx > Sent: Thursday, 21 August 2014 10:45 AM > To: j.d.blower@xxxxxxxxxxxxx; thredds@xxxxxxxxxxxxxxxx > Subject: [ExternalEmail] Re: [thredds] NetCDF, WMS, and auto color scale > (not set by admin) > > The two workflows we have are > 1. Dump the data in "this" folder heriachy/structure - it will magically > appear for you. > 2. Email us and we will host it. > > I cant see any issue with scripting it, but I was under the impression that > changes to the xml file would require TDS to be restarted, plus its just > another bit of data to keep in 'sync' somehow. > > My desire here would be that, as an admin, I would tell the wmsConfig.xml > <location /this/path/his-data-set-*.nc> > <layer name=elevation> > <default color range> > <min>$delegate[elevation.vmin]</min> > <max>$delegate[elevation.vmax]</max> > </default color range> > </layer> > </location> > > As an admin I would deliberately hand over the 'setting the right view > stuff' for those who could control the data production/attribution. Freeing > me from that role. > > I completely understand where it is not appropriate - but I don't believe > that makes it 'inappropriate' for the simple cases. > > Terry > > -----Original Message----- > From: thredds-bounces@xxxxxxxxxxxxxxxx > [mailto:thredds-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Jon Blower > Sent: Thursday, 21 August 2014 2:48 AM > To: thredds@xxxxxxxxxxxxxxxx > Subject: Re: [thredds] NetCDF, WMS, and auto color scale (not set by admin) > > Hi Terry, > > As far as I remember THREDDS has always required setting of the default > colour scale range by the admin. (However the standalone ncWMS could do this > automatically, because it scans datasets during an ingestion step, which > THREDDS does not perform.) > > There is currently no way to read the default colour range from the NetCDF > files, although a means could theoretically be invented, with "special" > attributes. One problem is that, in a multidimensional variable, the most > appropriate range for one z or t level may not be so appropriate for another > value of z or t. There are other interesting issues with the behaviour of > NetCDF attributes in aggregations (what happens if different files in the > same aggregation have different attributes?) > > How do the data providers communicate their preferences to you at the > moment? Could you, for example, craft a script that takes their values (from > a simple text file maybe) and inserts it appropriately into the > wmsConfig.xml automatically? > > Cheers, > Jon > > >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Wed, 20 Aug 2014 01:19:29 +0000 >> From: <Terry.Rankine@xxxxxxxx> >> To: <thredds@xxxxxxxxxxxxxxxx> >> Subject: [thredds] NetCDF, WMS, and auto color scale (not set by >> admin) >> Message-ID: > <918EBF4F0E40D340B213B473CCAB6B126000492D@xxxxxxxxxxxxxxxxxxxxxxxxxx> >> Content-Type: text/plain; charset="us-ascii" >> >> Hi Guys >> >> >> >> In older versions of thredds I could leave the auto color scaling for >> a WMS to thredds to take care of for me. Can I have it back - but a >> bit > different. >> >> >> >> As a system admin - I am just 'serving the data' not really >> understanding what 'sensible viewing defaults' for >> defaultColorScaleRange for any file in the directory should be. >> However - the data owners I interact with all have a 'preference' on >> how to color/scale their visualisations for their data files. >> >> >> >> Is there a way to make thredds read the netCDF file - load the >> variable, and load the visualisation range FROM THE DATA FILE - not >> the wmsConfig.xml - where I would need to explicitly set it? >> >> >> >> IE - if on the elevation layer for this service: >> >> http://vhirl-dev.csiro.au/thredds/dodsC/dem/testconvert/bathymetry_sur >> veys_G >> A-2476_100m_version1_WGS84UTM49S_esri_grid_grid100m_GA-2476_Exmouth_10 >> 0m_exm >> outh100m.nc4.html >> >> >> >> I set a netcdf parameter like defaultColorScaleRange or something less >> thredds specific, max/min or something which could guide the 'lazy' >> configuration option for the data? >> >> >> >> Regards >> >> Terry > > _______________________________________________ > thredds mailing list > thredds@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > _______________________________________________ > thredds mailing list > thredds@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/
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