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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Dave, Thanks for alerting us to this problem. According to this http://earthquake.usgs.gov/earthquakes/catalogs/ the data feeds have changed location, but also the format has been altered. Unfortunately, we do not have a quick solution and we will have to put it on the todo list. Best, Unidata IDV Support > Full Name: Dave Tewksbury > Email Address: address@hidden > Organization: Hamilton College Geosciences > 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: > > Installed UNAVCO IDV viewer per website instructions with no issues. > > Viewer launches and displays map with area of interest box around North > America. > > Following instructions on Earthquakes, Epicenters, Hypocenters, > Magnitudes and Earthquake catalogs web page attempting to visualize > current earthquakes using the Displays > Locations > Earth > Earthquakes > > and selecting quakes greater than magnitude 2.5 > > Activity bar at lower right of window shows scrolling lines then presents > this error message. > > "Creating display: Station Locations > java.lang.NullPointerException" > > Nothing is plotted and nothing is added to the legend window. > > Have relaunched IDV and restarted computer with no luck. > > Working on Windows OS 7 > > any suggestions? > > Thanks, > > Dave > > ****************** > Stack trace: > java.lang.NullPointerException > at ucar.unidata.metdata.NamedStationTable.getMap(NamedStationTable.java:1438) > at ucar.unidata.metdata.StationTableImpl.values(StationTableImpl.java:161) > at > ucar.unidata.idv.control.StationLocationControl.getStationList(StationLocationControl.java:1315) > at > ucar.unidata.idv.control.StationLocationControl.getFilterNames(StationLocationControl.java:953) > at > ucar.unidata.idv.control.StationModelControl.init(StationModelControl.java:508) > at > ucar.unidata.idv.control.StationLocationControl.init(StationLocationControl.java:294) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1423) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1106) > 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: QIA-177254 Department: Support IDV Priority: Normal Status: Open