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Hi Tim, I was having trouble reproducing the problem because I was running our current TDS 4.1 code which will show missing data values as transparent backgrounds just fine. I don't yet understand why the TDS 4.0 code isn't working. I'm going to dig into that some more but it may be awhile before we have a fix released. If you can, I would encourage you to upgrade to TDS 4.1. While it is officially an alpha release, we are running it on our main server and (unless we run into unforeseen problems) plan to advance it to beta and then full stable release in fairly short order. Ethan > Ethan, > > I answered inline--Thanks for the help it is really appreciated!! > > Tim > > -----Original Message----- > > Hi Tim, > > > It still does not work, is there a setting in Thredds that I have to set? > > What version of TDS are you running? > > ==THREDDS Data Server [Version 4.0.25 - 20090807.1724] > > How are you making the WMS requests? > > ==Requested are tested via IE, Firefox, ArcGIS, Google Earth > > Is the TDS you are making these requests to publicly accessible? > > ==I am testing on my local system and then I have to deploy a war file to a > server that resides on a classified network > > Please point me to a particular dataset with which you are having this > problem. And send the URLs for the requests you are making. > > ==I am testing with data from this > link--http://edac-dap.northerngulfinstitute.org/NCOM/Gulf_of_Mexico/ncom_glb_gom_2009090500.nc > > ==http://localhost:8080/thredds/wms/NGDS/ncom_glb_gom_2009090500.nc?==service=WMS&version=1.3.0&request=GetMap&transparent=true&FORMAT=image/png&WIDTH=2000&HEIGHT=2000&LAYERS=water_temp&CRS=EPSG:4326&BBOX=-98.0,-==56.0,8.0,38.0&StyleS=BOXFILL/rainbow&elevation=0.0&time=2009-09-05T00:00:00.000Z Ticket Details =================== Ticket ID: RDT-808100 Department: Support THREDDS Priority: Normal Status: Closed