Re: [thredds] TDS WMS returns blank images

Hi Pauline,
Thanks for investigating. Then I will be hopeful that the problem is fixed when 
TDS WMS catches up with the latest ncWMS coordinate system code. FYI: I was 
getting the blank images when loading the WMS GetCapabilities URL from our TDS 
into Gaia 3 or Quantum GIS Open Source GIS packages:

http://www.thecarbonproject.com/gaia.php
http://www.qgis.org

Cheers,
John
---
John Maurer
HiOOS Data System Administrator
School of Ocean and Earth Science and Technology
University of Hawaiʻi at Mānoa
808.956.0227
http://www2.hawaii.edu/~jmaurer



----- Original Message -----
From: Pauline Mak <pauline.mak@xxxxxxxxxxx>
Date: Saturday, August 29, 2009 9:35 pm
Subject: Re: [thredds] TDS WMS returns blank images
To: "John Maurer, IV" <jmaurer@xxxxxxxxxx>
Cc: THREDDS THREDDS <thredds@xxxxxxxxxxxxxxxx>

> Hi John,
> 
> I've tried loading your file on my local instance of TDS, and 
> it's 
> throwing an error:
> 
> ---
> 2009-08-30T17:05:42.686 +1000 [     
> 16210][      27] DEBUG - 
> uk.ac.rdg.resc.ncwms.datareader.DefaultDataReader - grid name: 
> vbar has 
> name:false
> 2009-08-30T17:05:42.686 +1000 [     
> 16210][      27] DEBUG - 
> uk.ac.rdg.resc.ncwms.datareader.DefaultDataReader - grid name: 
> DV_avg1 
> has name:false
> 2009-08-30T17:05:42.686 +1000 [     
> 16210][      27] DEBUG - 
> uk.ac.rdg.resc.ncwms.datareader.DefaultDataReader - grid name: 
> DV_avg2 
> has name:false
> 2009-08-30T17:05:42.689 +1000 [     
> 16213][      27] INFO  - 
> thredds.server.wms.WMSController - Request Completed - 500 - -1 -
> 1032
> java.lang.IllegalArgumentException: Cannot yet deal with 
> coordinate axes 
> of >1 dimension
> ---
> 
> I think the TDS WMS code is lagging behind ncWMS (as I can't 
> seem to 
> find this error message anywhere in latest revision).  I am 
> hoping if 
> the new coordinate system code is ported across, then it will 
> work...  I 
> am, however, curious as to how to got to the blank image - I 
> can't even 
> load the GetCapabilities XML!
> 
> Cheers,
> 
> -Pauline.
> 
> John Maurer, IV wrote:
> > Sorry, our TDS has been in a state of flux and the URL changed 
> slightly 
> > yesterday afternoon. Try this link instead:
> > 
> > 
> http://oos.soest.hawaii.edu/thredds/catalog/hioos/roms_forec/files/catalog.html?dataset=hioos/roms_forec/files/hiig_forec_20090828.nc>
>  
> > You will find the following access methods listed: OPeNDAP, 
> HTTP, WCS, 
> > WMS, and NetCDFSubset. Thanks again for giving this a look for me!
> > Aloha,
> > John Maurer
> > 
> > ----- Original Message -----
> > From: Pauline Mak <pauline.mak@xxxxxxxxxxx>
> > Date: Friday, August 28, 2009 7:25 pm
> > Subject: Re: [thredds] TDS WMS returns blank images
> > To: "John Maurer, IV" <jmaurer@xxxxxxxxxx>
> > 
> >  > Hi John,
> >  >
> >  > I can't seem to find a direct download link... Is this
> >  > intentional?
> >  > Would you be able to email me a file if this cannot be 
> enabled?>  >
> >  > Thanks,
> >  >
> >  > -Pauline.
> >  >
> >  > John Maurer, IV wrote:
> >  > > Thanks, Pauline. Here is an example GetCapabilities 
> request>  > for a ROMS
> >  > > ocean model over Hawaii, which includes temperature (temp)
> >  > values
> >  > > ranging ~0.9-27 C and salinity (salt) values ranging 
> ~34-35:
> >  > >
> >  > >
> >  > 
> > 
> http://oos.soest.hawaii.edu/thredds/wms/hioos/roms_forec/forecast/HI-ROMS_Forecast_Model_Run_Collection_ConstantForecast_2009-08-04T00:00:00Z?service=WMS&version=1.3.0&request=GetCapabilities
>  
> > 
> >  > >
> >  > 
> > 
> <http://oos.soest.hawaii.edu/thredds/wms/hioos/roms_forec/forecast/HI-ROMS_Forecast_Model_Run_Collection_ConstantForecast_2009-08-04T00:00:00Z?service=WMS&version=1.3.0&request=GetCapabilities>
> >  > >
> >  > > The relevant TDS links for the above request at:
> >  > >
> >  > >    1.
> >  > 
> > 
> http://oos.soest.hawaii.edu/thredds/catalog/hioos/roms_forec/catalog.html>    
> > 2. 
> > 
> http://oos.soest.hawaii.edu/thredds/catalog/hioos/roms_forec/forecast/catalog.html>
>   > >    3.
> >  > 
> > 
> http://oos.soest.hawaii.edu/thredds/catalog/hioos/roms_forec/forecast/catalog.html?dataset=hioos/roms_forec/forecast/HI-ROMS_Forecast_Model_Run_Collection_ConstantForecast_2009-08-04T00:00:00Z
> >  > >
> >  > > Thanks for giving this a look.
> >  > > ---
> >  > > John Maurer
> >  > > HiOOS Data System Administrator
> >  > > School of Ocean and Earth Science and Technology
> >  > > University of Hawaiʻi at Mānoa
> >  > > 808.956.0227
> >  > > http://www2.hawaii.edu/~jmaurer
> >  > >
> >  > >
> >  > >
> >  > > ----- Original Message -----
> >  > > From: Pauline Mak <pauline.mak@xxxxxxxxxxx>
> >  > > Date: Friday, August 28, 2009 11:07 am
> >  > > Subject: Re: [thredds] TDS WMS returns blank images
> >  > > To: "John Maurer, IV" <jmaurer@xxxxxxxxxx>
> >  > > Cc: thredds <thredds@xxxxxxxxxxxxxxxx>
> >  > >
> >  > >  > Hi John,
> >  > >  >
> >  > >  > Can I download a file from somewhere?  
> I would
> >  > like to take
> >  > >  > a look at
> >  > >  > the problem...
> >  > >  >
> >  > >  > Cheers,
> >  > >  >
> >  > >  > -Pauline.
> >  > >  >
> >  > >  > John Maurer, IV wrote:
> >  > >  > > Aloha TDS Community,
> >  > >  > > When testing our TDS WMS results in 
> various clients,
> >  > I find
> >  > >  > that the
> >  > >  > > images are always blank (all white) 
> regardless of what
> >  > >  > variable or
> >  > >  > > palette I've tried thus far. I've only 
> been using
> >  > the default
> >  > >  > palettes
> >  > >  > > that come with TDS. My suspicion is that 
> the TDS WMS
> >  > is not
> >  > >  > configured
> >  > >  > > by default to scale the data values of the 
> variable>  > from 0-
> >  > >  > 255?, and
> >  > >  > > that the default palettes are therefore 
> inapplicable>  > to my
> >  > >  > data as a
> >  > >  > > result. For instance, if my variable has values
> >  > ranging from -
> >  > >  > 1.0 to
> >  > >  > > +1.0, then a palette defining colors that 
> expect values
> >  > >  > ranging 0-255
> >  > >  > > won't help.
> >  > >  > >
> >  > >  > > If this is true, then I can define my own 
> palette>  > and specify
> >  > >  > this in
> >  > >  > > threddsConfig.xml. But is there a way to 
> set the
> >  > palette on a
> >  > >  > dataset
> >  > >  > > and/or variable basis?, or will this 
> palette appear
> >  > for all
> >  > >  > datasets
> >  > >  > > served through my TDS?
> >  > >  > >
> >  > >  > > Lastly, is there some way to tell the TDS 
> WMS to
> >  > scale the
> >  > >  > values to
> >  > >  > > 0-255 in ogcMetaXML?, and can you specify 
> what range
> >  > of values
> >  > >  > to scale
> >  > >  > > to 0-255 (i.e. leaving out a no-data value 
> like -
> >  > 999, etc.)?
> >  > >  > >
> >  > >  > > Mahalo!,
> >  > >  > > John
> >  > >  > > ---
> >  > >  > > John Maurer
> >  > >  > > HiOOS Data System Administrator
> >  > >  > > School of Ocean and Earth Science and Technology
> >  > >  > > University of Hawaiʻi at Mānoa
> >  > >  > > 808.956.0227
> >  > >  > > http://www2.hawaii.edu/~jmaurer
> >  > >  > <http://www2.hawaii.edu/%7Ejmaurer>>
> >  > >  > >
> >  > >  > > -------------------------------------------
> ----------
> >  > ----------
> >  > >  > ---------
> >  > >  > >
> >  > >  > > _______________________________________________
> >  > >  > > thredds mailing list
> >  > >  > > thredds@xxxxxxxxxxxxxxxx
> >  > >  > > For list information or to 
> unsubscribe,  visit:
> >  > >  > http://www.unidata.ucar.edu/mailing_lists/
> >  > >  >
> >  > >  > --
> >  > >  > Pauline Mak
> >  > >  >
> >  > >  > Assistant Manager, ARCS Data Services
> >  > >  > Ph:  +61 3 6226 7518
> >  > >  > Mob: +61 411 638 196
> >  > >  > Email: pauline.mak@xxxxxxxxxxx
> >  > >  > Jabber: pauline.mak@xxxxxxxxxxx
> >  > >  > http://www.arcs.org.au/
> >  > >  >
> >  > >  > TPAC
> >  > >  > Email: pauline.mak@xxxxxxxxxxx
> >  > >  > http://www.tpac.org.au/
> >  > >  >
> >  > >  >
> >  > >  >
> >  > >  >
> >  >
> >  > --
> >  > Pauline Mak
> >  >
> >  > Assistant Manager, ARCS Data Services
> >  > Ph:  +61 3 6226 7518
> >  > Mob: +61 411 638 196
> >  > Email: pauline.mak@xxxxxxxxxxx
> >  > Jabber: pauline.mak@xxxxxxxxxxx
> >  > Calendar: http://tinyurl.com/pmak-arcs-calendar
> >  > http://www.arcs.org.au/
> >  >
> >  > TPAC
> >  > Email: pauline.mak@xxxxxxxxxxx
> >  > http://www.tpac.org.au/
> >  >
> >  >
> >  >
> >  >
> 
> -- 
> Pauline Mak
> 
> Assistant Manager, ARCS Data Services
> Ph:  +61 3 6226 7518
> Mob: +61 411 638 196
> Email: pauline.mak@xxxxxxxxxxx
> Jabber: pauline.mak@xxxxxxxxxxx
> Calendar: http://tinyurl.com/pmak-arcs-calendar
> http://www.arcs.org.au/
> 
> TPAC
> Email: pauline.mak@xxxxxxxxxxx
> http://www.tpac.org.au/
> 
> 
> 
>
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