This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hi Randy- > Institution: NWS, Radar Operations Center > Package Version: 1.3b2 > Operating System: os.name:Windows XP; os.arch:x86; os.version:5.1; > Hardware Information: java.vendor:Sun Microsystems Inc.; > java.version:1.5.0_06; java.home:C:\\Program Files\\Java\\jre1.5.0_06; > j3d.version:1.3.2 fcs (build12); j3d.vendor:Sun Microsystems, Inc.; > j3d.renderer:OpenGL; > Inquiry: The Unidata IDV is new to me. After viewing "realtime" Level III > data, the IDV > capabilities seem extensive. > > I was unable to view dual polarization moments (in netCDF format) with IDV. > Is there an easy > way to display the NSSL dual pole radar files using IDV? The only netCDF radar format we support is the NCAR sweep file format. Could you send a copy of your format that we could take a look at? We are currently working on supporting a variety of radar formats natively and we could possibly add this to the list. Is there documentation on the standard? > Here is the reported error from my first attempt to display: > > An error has occurred: > Creating ui:C:\DATA\A P P S Dual Pole\Reflectivity_0.00_20050513-070524.netcdf > Content is not allowed in prolog. When you opened the file, it looks like the IDV is trying to open it as an XML file for some reason. I don't think we would support your format natively, but if you change the data type to netCDF Sweep Files, I'm sure you'd get a different error message. ;-) Don Murray > Thanks. Randy Steadham > > ****************** > Stack trace: > org.xml.sax.SAXParseException: Content is not allowed in prolog. > at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) > at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown > Source) > at javax.xml.parsers.DocumentBuilder.parse(Unknown Source) > at ucar.unidata.xml.XmlUtil.getDocument(XmlUtil.java:1048) > at ucar.unidata.idv.chooser.XmlChooser.makeUiFromPath(XmlChooser.java:340) > at ucar.unidata.idv.chooser.XmlChooser.makeUiFromPath(XmlChooser.java:310) > at ucar.unidata.idv.chooser.XmlChooser.doUpdateInner(XmlChooser.java:597) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at ucar.unidata.util.Misc$1.run(Misc.java:867) > at ucar.unidata.util.Misc$2.run(Misc.java:895) Ticket Details =================== Ticket ID: RGX-739687 Department: Support IDV Priority: Normal Status: Open