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Ethan, Thanks for looking into this. It truly seems to be an "edge case". ;-) Jon Blower might take a while to respond, as this is EGU week. -Rich On Wed, Apr 6, 2011 at 12:56 PM, Ethan Davis <edavis@xxxxxxxxxxxxxxxx> wrote: > 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://geoport.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_temp&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_temp&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 >> >> >> > > _______________________________________________ > 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
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