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Dr. Hahn Chul Jung, Thank you for your support request. I was able to successfully open the data in the IDV with the following steps. In a web browser, I navigated to http://motherlode.ucar.edu/repository. I went to Data --> IDD Data --> decoded --> gempak --> surface. There I clicked on the small arrow next to the "GEMPAK File" link. And I clicked on "All Links". Now click on the "OpenDAP" link. Copy and paste that URL into the IDV. In particular, in the IDV Dashboard go to the "URLs" tab. Paste the URL in the textbox. Most importantly select "netCDF/GEMPAK Point Data files" as the Data Source Type. Best Wishes, Unidata IDV Support > Full Name: Hahn Chul Jung > Email Address: address@hidden > Organization: NASA GSFC > Package Version: 4.1 build date:2013-08-02 18:38 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Program Files\IDV_4.1\jre version: 1.6.0_43 > j3d:1.5.2 fcs (build4) > Description of problem: > > To whom it may concenr, > > I can't open a file named 20140305.sao.gem under decoded/gem/surface. > How can I open it in IDV? > > Error opening > url:file:dods://motherlode.ucar.edu/repository/entry/show/output:data.opendap/entryid:synth:a136862d-1253-4096-b864-ac53028253d7:L2RlY29kZWQvZ2VtcGFrL3N1cmZhY2UvMjAxNDAzMDVfc2FvLmdlbQ==/20140305_sao.gem/dodsC/entry.das > dods:\motherlode.ucar.edu\repository\entry\show\output:data.opendap\entryid:synth:a136862d-1253-4096-b864-ac53028253d7:L2RlY29kZWQvZ2VtcGFrL3N1cmZhY2UvMjAxNDAzMDVfc2FvLmdlbQ==\20140305_sao.gem\dodsC\entry.das > (The filename, directory name, or volume label syntax is incorrect) > > ****************** > Stack trace: > java.io.FileNotFoundException: > dods:\motherlode.ucar.edu\repository\entry\show\output:data.opendap\entryid:synth:a136862d-1253-4096-b864-ac53028253d7:L2RlY29kZWQvZ2VtcGFrL3N1cmZhY2UvMjAxNDAzMDVfc2FvLmdlbQ==\20140305_sao.gem\dodsC\entry.das > (The filename, directory name, or volume label syntax is incorrect) > at java.io.FileInputStream.open(Native Method) > at java.io.FileInputStream.<init>(Unknown Source) > at java.io.FileInputStream.<init>(Unknown Source) > at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source) > at sun.net.www.protocol.file.FileURLConnection.getInputStream(Unknown Source) > at javax.swing.JEditorPane.getStream(Unknown Source) > at javax.swing.JEditorPane.setPage(Unknown Source) > at > ucar.unidata.idv.control.TextDisplayControl.processUrl(TextDisplayControl.java:1184) > at > ucar.unidata.idv.control.TextDisplayControl.processUrl(TextDisplayControl.java:1072) > at > ucar.unidata.idv.control.TextDisplayControl.doMakeContents(TextDisplayControl.java:489) > at > ucar.unidata.idv.control.DisplayControlImpl.doMakeWindow(DisplayControlImpl.java:4312) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1141) > at ucar.unidata.idv.ControlDescriptor.initControl(ControlDescriptor.java:986) > at ucar.unidata.idv.ControlDescriptor$1.run(ControlDescriptor.java:911) > at ucar.unidata.util.Misc$3.run(Misc.java:1251) > > > Ticket Details =================== Ticket ID: GXD-384297 Department: Support IDV Priority: Normal Status: Closed