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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Great! -J > Got it. The IDV app file was pointing to the wrong directory for some > reason. Probably because of the multiple installs. I just overwrited with > a fresh install, works now. > > Stefan > -- > Stefan Cecelski > Ph.D. Candidate and Graduate Research Assistant > AOSC Department: University of Maryland College Park > 2343 Computer and Space Sciences Building(CSS #224) > 703.801.1370 > address@hidden > > On Wed, May 18, 2011 1:40 pm, Unidata IDV Support wrote: > > OK, we need to get to the bottom of this too. Another phone call. > > > >> Unfortunately, it is occurring after our success. I am able to double > >> click the runIDV script to load IDV, but after further examination, > >> clicking the IDV application file doesn't load IDV. The icon 'jumps' > >> once > >> in the dock, then doesn't do anything. > >> > >> Stefan > >> -- > >> Stefan Cecelski > >> Ph.D. Candidate and Graduate Research Assistant > >> AOSC Department: University of Maryland College Park > >> 2343 Computer and Space Sciences Building(CSS #224) > >> 703.801.1370 > >> address@hidden > >> > >> On Wed, May 18, 2011 1:24 pm, Unidata IDV Support wrote: > >> > Clicking the IDV icon runs the "runIDV" script so they are equivalent. > >> I > >> > hope what you describe is not what is currently happening after the > >> > upgrade to Java 1.6. By the way, you should be able to drag that IDV > >> icon > >> > to the Dock or the Desktop. > >> > > >> > -J > >> > > >> >> Thanks Julien! Final question before we close this issue: Is there > >> any > >> >> reason why my IDV wont start up if I click the IDV file but will when > >> I > >> >> run the 'runIDV' script? > >> >> > >> >> Stefan > >> >> -- > >> >> Stefan Cecelski > >> >> Ph.D. Candidate and Graduate Research Assistant > >> >> AOSC Department: University of Maryland College Park > >> >> 2343 Computer and Space Sciences Building(CSS #224) > >> >> 703.801.1370 > >> >> address@hidden > >> >> > >> >> On Wed, May 18, 2011 1:15 pm, Unidata IDV Support wrote: > >> >> > For the record, Stefan and I chatted on the phone. The root problem > >> >> here > >> >> > is that the IDV was running with Java version 1.5 *NOT* the > >> required > >> >> 1.6 > >> >> > version. > >> >> > > >> >> > Mystery solved. > >> >> > > >> >> > -Julien > >> >> > > >> >> >> Hi Stefan, > >> >> >> > >> >> >> OK, this merits a phone call. I am going to call you at the number > >> >> >> below, if that is OK. > >> >> >> > >> >> >> -Julien > >> >> >> > >> >> >> > >> >> >> > Julien, > >> >> >> > > >> >> >> > Attached is the runIDV script. I updated to the latest nightly > >> >> build > >> >> >> > following our conversation and IDV won't load. Script says "IDV > >> has > >> >> >> failed > >> >> >> > to start." I have backed up the edited ncldv.jar file made for > >> me > >> >> from > >> >> >> > Don. Not sure what is causing the failure to start up. > >> >> >> > > >> >> >> > Stefan > >> >> >> > -- > >> >> >> > Stefan Cecelski > >> >> >> > Ph.D. Candidate and Graduate Research Assistant > >> >> >> > AOSC Department: University of Maryland College Park > >> >> >> > 2343 Computer and Space Sciences Building(CSS #224) > >> >> >> > 703.801.1370 > >> >> >> > address@hidden > >> >> >> > > >> >> >> > On Wed, May 18, 2011 12:19 pm, Unidata IDV Support wrote: > >> >> >> > > Hi Stefan, > >> >> >> > > > >> >> >> > > Please send me the runIDV script in the installation > >> directory. I > >> >> >> think I > >> >> >> > > know what is going on, but I need to see the script to be > >> sure. > >> >> >> > > > >> >> >> > > Thanks. > >> >> >> > > > >> >> >> > > -Julien > >> >> >> > > > >> >> >> > > > >> >> >> > >> Julien, > >> >> >> > >> > >> >> >> > >> That is odd. Attached is a print screen showing my current > >> >> >> allotment of > >> >> >> > >> memory for IDV. As you can see, the bottom left does show > >> only > >> >> >> 533mb, > >> >> >> > >> but > >> >> >> > >> in the preferences I have it set at 51%. I am starting IDV by > >> >> >> clicking > >> >> >> > >> the > >> >> >> > >> IDV application file in my IDV folder, the file called 'IDV'. > >> >> >> > >> > >> >> >> > >> Stefan > >> >> >> > >> -- > >> >> >> > >> Stefan Cecelski > >> >> >> > >> Ph.D. Candidate and Graduate Research Assistant > >> >> >> > >> AOSC Department: University of Maryland College Park > >> >> >> > >> 2343 Computer and Space Sciences Building(CSS #224) > >> >> >> > >> 703.801.1370 > >> >> >> > >> address@hidden > >> >> >> > >> > >> >> >> > >> On Wed, May 18, 2011 12:08 pm, Unidata IDV Support wrote: > >> >> >> > >> > From the errors you sent earlier I can see your heap is > >> >> >> java.heap: > >> >> >> > >> 532.5 > >> >> >> > >> > MB (although this could be a red herring). At any rate, > >> please > >> >> >> double > >> >> >> > >> > check. Also how are you starting the IDV? The nightly > >> builds > >> >> >> should > >> >> >> > >> > contain the latest and greatest from Don. > >> >> >> > >> > > >> >> >> > >> > -Julien > >> >> >> > >> > > >> >> >> > >> >> Julien, > >> >> >> > >> >> > >> >> >> > >> >> I already have 3GB of memory dedicated to IDV by going to > >> the > >> >> >> system > >> >> >> > >> tab > >> >> >> > >> >> under preferences, do I really need to dedicate more...? > >> >> Also, > >> >> >> does > >> >> >> > >> the > >> >> >> > >> >> latest nightly build have the corrections from my work > >> with > >> >> Don > >> >> >> > >> >> regarding > >> >> >> > >> >> opening GrADS files? Thanks! > >> >> >> > >> >> > >> >> >> > >> >> V/R, > >> >> >> > >> >> > >> >> >> > >> >> Stefan > >> >> >> > >> >> -- > >> >> >> > >> >> Stefan Cecelski > >> >> >> > >> >> Ph.D. Candidate and Graduate Research Assistant > >> >> >> > >> >> AOSC Department: University of Maryland College Park > >> >> >> > >> >> 2343 Computer and Space Sciences Building(CSS #224) > >> >> >> > >> >> 703.801.1370 > >> >> >> > >> >> address@hidden > >> >> >> > >> >> > >> >> >> > >> >> On Wed, May 18, 2011 11:55 am, Unidata IDV Support wrote: > >> >> >> > >> >> > Hi Stefan. > >> >> >> > >> >> > > >> >> >> > >> >> > Please increase the memory. Since you are running 2.9u4, > >> >> >> download > >> >> >> > >> the > >> >> >> > >> >> > latest nightly build. > >> >> >> > >> >> > > >> >> >> > >> >> > Go to the Edit --> Preferences, System tab and increase > >> the > >> >> >> memory. > >> >> >> > >> >> > Restart the IDV. > >> >> >> > >> >> > > >> >> >> > >> >> > -Julien > >> >> >> > >> >> > > >> >> >> > >> >> >> Full Name: Stefan Cecelski > >> >> >> > >> >> >> Email Address: address@hidden > >> >> >> > >> >> >> Organization: University of Maryland > >> >> >> > >> >> >> Package Version: 2.9u4 build date:2011-04-13 07:13 UTC > >> >> >> > >> >> >> Operating System: Mac OS X > >> >> >> > >> >> >> Hardware: Java: home: > >> >> >> > >> >> >> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home > >> >> >> > >> >> >> version: 1.6.0_24 j3d:1.5.2 fcs (build4) > >> >> >> > >> >> >> Description of problem: Creating display: Color-Shaded > >> >> Cross > >> >> >> > >> Section > >> >> >> > >> >> >> java.lang.OutOfMemoryError: java.lang.OutOfMemoryError: > >> >> Java > >> >> >> heap > >> >> >> > >> >> space > >> >> >> > >> >> >> Java heap space > >> >> >> > >> >> >> > >> >> >> > >> >> >> I keep getting the above error when trying to do a > >> simple > >> >> >> cross > >> >> >> > >> >> section > >> >> >> > >> >> >> of relative vorticity from my 4km WRF data from my > >> GrADS > >> >> >> .ctl/.dat > >> >> >> > >> >> pair. > >> >> >> > >> >> >> I am trying to create a cross section from 1 time step > >> >> using > >> >> >> > >> pressure > >> >> >> > >> >> >> levels between 1000 and 400 hPa(every 50 hPa). I get > >> this > >> >> >> error > >> >> >> > >> any > >> >> >> > >> >> time > >> >> >> > >> >> >> I try to create a cross section, regardless of how many > >> >> other > >> >> >> > >> >> parameters > >> >> >> > >> >> >> I have displayed(0-4). The cross section fails when > >> >> >> attempting 1 > >> >> >> > >> time > >> >> >> > >> >> >> step or more. > >> >> >> > >> >> >> > >> >> >> > >> >> >> Thanks! > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> Stefan > >> >> >> > >> >> >> > >> >> >> > >> >> >> ****************** > >> >> >> > >> >> >> Stack trace: > >> >> >> > >> >> >> java.lang.OutOfMemoryError: Java heap space > >> >> >> > >> >> >> at visad.GriddedSet.getNeighbors(GriddedSet.java:841) > >> >> >> > >> >> >> at visad.SampledSet.getNeighbors(SampledSet.java:309) > >> >> >> > >> >> >> at visad.FlatField.derivative(FlatField.java:4256) > >> >> >> > >> >> >> at visad.FlatField.derivative(FlatField.java:4485) > >> >> >> > >> >> >> at > >> >> >> ucar.unidata.data.grid.GridMath.partial(GridMath.java:1581) > >> >> >> > >> >> >> at > >> >> >> ucar.unidata.data.grid.GridMath.partial(GridMath.java:1550) > >> >> >> > >> >> >> at > >> >> >> ucar.unidata.data.grid.GridMath.partial(GridMath.java:1519) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> ucar.unidata.data.grid.DerivedGridFactory.ddy(DerivedGridFactory.java:2837) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> ucar.unidata.data.grid.DerivedGridFactory.createRelativeVorticity(DerivedGridFactory.java:435) > >> >> >> > >> >> >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native > >> >> >> Method) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > >> >> >> > >> >> >> at java.lang.reflect.Method.invoke(Method.java:597) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> org.python.core.PyReflectedFunction.__call__(PyReflectedFunction.java:186) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> org.python.core.PyReflectedFunction.__call__(PyReflectedFunction.java:204) > >> >> >> > >> >> >> at org.python.core.PyObject.__call__(PyObject.java:404) > >> >> >> > >> >> >> at org.python.core.PyObject.__call__(PyObject.java:408) > >> >> >> > >> >> >> at org.python.pycode._pyx63.f$0(<string>:1) > >> >> >> > >> >> >> at org.python.pycode._pyx63.call_function(<string>) > >> >> >> > >> >> >> at > >> org.python.core.PyTableCode.call(PyTableCode.java:165) > >> >> >> > >> >> >> at org.python.core.PyCode.call(PyCode.java:18) > >> >> >> > >> >> >> at org.python.core.Py.runCode(Py.java:1261) > >> >> >> > >> >> >> at > >> org.python.core.__builtin__.eval(__builtin__.java:484) > >> >> >> > >> >> >> at > >> org.python.core.__builtin__.eval(__builtin__.java:488) > >> >> >> > >> >> >> at > >> >> >> > >> org.python.util.PythonInterpreter.eval(PythonInterpreter.java:190) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> ucar.unidata.data.DerivedDataChoice.getData(DerivedDataChoice.java:764) > >> >> >> > >> >> >> at > >> >> ucar.unidata.data.DataChoice.getData(DataChoice.java:637) > >> >> >> > >> >> >> at > >> >> >> ucar.unidata.data.DataInstance.getData(DataInstance.java:243) > >> >> >> > >> >> >> at > >> >> >> ucar.unidata.data.DataInstance.getData(DataInstance.java:207) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> ucar.unidata.data.grid.GridDataInstance.init(GridDataInstance.java:205) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:162) > >> >> >> > >> >> >> at > >> >> >> > >> >> >> ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:143) > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> > > >> >> >> > >> >> > > >> >> >> > >> >> > Ticket Details > >> >> >> > >> >> > =================== > >> >> >> > >> >> > Ticket ID: ENV-141506 > >> >> >> > >> >> > Department: Support IDV > >> >> >> > >> >> > Priority: Normal > >> >> >> > >> >> > Status: Closed > >> >> >> > >> >> > > >> >> >> > >> >> > > >> >> >> > >> >> > >> >> >> > >> >> > >> >> >> > >> >> > >> >> >> > >> > > >> >> >> > >> > > >> >> >> > >> > Ticket Details > >> >> >> > >> > =================== > >> >> >> > >> > Ticket ID: ENV-141506 > >> >> >> > >> > Department: Support IDV > >> >> >> > >> > Priority: Normal > >> >> >> > >> > Status: Closed > >> >> >> > >> > > >> >> >> > >> > > >> >> >> > >> > >> >> >> > >> > >> >> >> > > > >> >> >> > > > >> >> >> > > Ticket Details > >> >> >> > > =================== > >> >> >> > > Ticket ID: ENV-141506 > >> >> >> > > Department: Support IDV > >> >> >> > > Priority: Normal > >> >> >> > > Status: Closed > >> >> >> > > > >> >> >> > > > >> >> >> > > >> >> >> > > >> >> >> > >> >> > > >> >> > > >> >> > Ticket Details > >> >> > =================== > >> >> > Ticket ID: ENV-141506 > >> >> > Department: Support IDV > >> >> > Priority: Normal > >> >> > Status: Closed > >> >> > > >> >> > > >> >> > >> >> > >> >> > >> > > >> > > >> > Ticket Details > >> > =================== > >> > Ticket ID: ENV-141506 > >> > Department: Support IDV > >> > Priority: Normal > >> > Status: Closed > >> > > >> > > >> > >> > >> > > > > > > Ticket Details > > =================== > > Ticket ID: ENV-141506 > > Department: Support IDV > > Priority: Normal > > Status: Closed > > > > > > > Ticket Details =================== Ticket ID: ENV-141506 Department: Support IDV Priority: Normal Status: Closed