Re: [thredds] [Ncwms-users] Odd black tile in TDS/WMS/Godiva2

Hi,

Are you able to identify any exceptions thrown in the log file?

Guan

-----Original Message-----
From: thredds-bounces@xxxxxxxxxxxxxxxx
[mailto:thredds-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Kyle Wilcox
Sent: Wednesday, April 06, 2011 1:25 PM
To: 'Ethan Davis'; thredds@xxxxxxxxxxxxxxxx; ncWMS email list
Subject: Re: [thredds] [Ncwms-users] Odd black tile in TDS/WMS/Godiva2

May still be an issue with the NcWMS trunk:

http://staging.asascience.com/sandbox/kwilcox/ncwms-blackbox.png


Dataset:

http://tds.maracoos.org/thredds/SST.html?dataset=SST-Agg

---------
Kyle Wilcox, Engineer
Applied Science Associates
55 Village Square Drive
South Kingstown, RI 02879
p: (401) 789-6224
e: kwilcox@xxxxxxxxxxxxxx


> -----Original Message-----
> From: Ethan Davis [mailto:edavis@xxxxxxxxxxxxxxxx]
> Sent: Wednesday, April 06, 2011 12:56 PM
> To: thredds@xxxxxxxxxxxxxxxx; ncWMS email list
> Subject: Re: [Ncwms-users] [thredds] Odd black tile in TDS/WMS/Godiva2
> 
> Hi Rich,
> 
> Oddly, if you zoom around or play with the BBOX, you can get the black
> box to go away. Here are two BBOX:
> 
> BBOX=141.5,35.71111232908,145.11494567866,37.1
> BBOX=142.0,35.71111232908,145.11494567866,37.1
> 
> The first produces an image without a black box. The second produces an
> image that is partially black. The only difference is in the first
> value
> (minx).
> 
> I just set my test server up to serve this dataset (using the remote
> OPeNDAP access) and I'm seeing the same problem. No useful log messages
> in threddsServlet.log, catalina.out, or localhost.*.log.
> 
> I'll look at this in the debugger later today or tomorrow to see if I
> can figure out what is going on. Jon Blower might have some insight
> into
> what is happening here. I'm also wondering if the current ncWMS code
> (which will be part of TDS 4.3) has solved this problem.
> 
> Ethan
> 
> On 4/6/2011 9:35 AM, Rich Signell wrote:
> > TDS WMS folks,
> > [I asked this on the ncWMS list, but though it would be wise to ask
> > here as well]
> >
> > Have any of you seen this strange "black tile" behaviour in
> TDS/ncWMS/Godiva2?
> > I'm using the WMS on TDS 4.2.5, and clicking the "Godiva2" link on
> the
> > bottom of the page.
> >
> > When I look at some Fukushima forecast sea-surface temperature fields
> > from
> <http://geoport.whoi.edu/thredds/godiva2/godiva2.html?server=http://geo
> port.whoi.edu/thredds/wms/ncom_relo/fukushima#>
> > I see a black tile in the bottom right of my window for "water_temp"
> > and other variables (except for sea_water_velocity, which is odd,
> > since the eastward and northward velocity both have the black tile).
> >
> > In case you don't want to fire up your browser, here's what it looks
> like:
> > http://coast-enviro.er.usgs.gov/models/share/2011-04-06_0834.png
> >
> > Yet if I ask the WMS for a water_temp image over the same region for
> > the same time, it looks fine:
> > http://coast-enviro.er.usgs.gov/models/share/2011-04-06_0849.png
> >
> > If I click right click on the black tile in Godiva2 and copy "image
> > location" I get
> >
> <http://geoport.whoi.edu/thredds/wms/ncom_relo/fukushima?LAYERS=water_t
> emp&ELEVATION=0&TIME=2011-04-
> 06T00%3A00%3A00.000Z&TRANSPARENT=true&STYLES=boxfill%2Frainbow&CRS=EPSG
> %3A4326&COLORSCALERANGE=2%2C21&NUMCOLORBANDS=64&LOGSCALE=false&SERVICE=
> WMS&VERSION=1.3.0&REQUEST=GetMap&EXCEPTIONS=XML&FORMAT=image%2Fpng&BBOX
> =142.23782226564,32.757265625006,146.07398681642,36.593430175788&WIDTH=
> 256&HEIGHT=256>
> > which indeed returns black.
> >
> > If I copy the "image location" on a tile that works, I get
> >
> <http://geoport.whoi.edu/thredds/wms/ncom_relo/fukushima?LAYERS=water_t
> emp&ELEVATION=0&TIME=2011-04-
> 06T00%3A00%3A00.000Z&TRANSPARENT=true&STYLES=boxfill%2Frainbow&CRS=EPSG
> %3A4326&COLORSCALERANGE=2%2C21&NUMCOLORBANDS=64&LOGSCALE=false&SERVICE=
> WMS&VERSION=1.3.0&REQUEST=GetMap&EXCEPTIONS=XML&FORMAT=image%2Fpng&BBOX
> =142.23782226564,36.593430175788,146.07398681642,40.429594726569&WIDTH=
> 256&HEIGHT=256>
> > which works fine.
> >
> > I really can't see any difference between these except for the
> bounds.
> >
> > I'm mystified.
> >
> > Help?
> >
> > Thanks
> > -Rich
> >
> >
> >
> 
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