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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Awesome - best of luck Ben! > OK, Sean. I'll make those changes after my report is finished. Right now, > everything works, so I can get the job done... that's the key and I can't > risk changing something and having it break. > > So, I'll try the rest of these changes in a week or two. Will also try McV > soon. > > Thanks again, > > Ben > > On May 22, 2012, at 10:03 AM, Unidata IDV Support wrote: > > >> What does vecmatg do? > > > > vecmath.jar is probably the part of Java3d that contains the linear algebra > > routines needed to do 3d visualization. I've learned a bit more about how > > the IDV and Java3D play on Macs (kudos to Don Murray). It looks like the > > java3d library stuff in ~/Library/Java/Extension is installed by the IDV > > (if "Install for this user" is selected when prompted to install JOGL). > > Somehow, our copies of the Java3D libs were changed (another package > > installed an older copy of J3D maybe?), and we were unable to run the IDV. > > I would suggest removing everything from ~/Library/Java/Extensions, and > > reinstall the IDV and allow it to put in the latest version of java3d (make > > sure to use 'Install for this user" and not for the entire System). Mac > > ships with an older version of Java3D that does not play well with the IDV > > (which is likely what you are using right now). It works, but things will > > go downhill when you try to resize windows, as well as some other issues. > > > >> > >> I'll give McV a shot, too. > > > > I just reinstalled McV and it works now too. > > > >> > >> FYI, this is all on the Mac, not the Parallels XP machine running on top > >> of it. Tried that, it ran but soon crashed. Not sure why. > > > > There are some issues with OpenGL and DirectX calls being made from inside > > a virtual machine (which is why not all computer games will run inside a > > VM). I've heard tale of the IDV running inside of a VM, but it took a > > specific virtual machine manager and a specific flavor of Linux. The option > > to run inside a VM is looking promising, but it's not quite there on the VM > > software side. > > > > Cheers, > > > > Sean > > > >> > >> On May 21, 2012, at 11:37, "Unidata IDV Support" <address@hidden> wrote: > >> > >>> Great news. I would also remove vecmath.jar (I actually removed > >>> everything in that folder - so far, nothing negative). I don't think any > >>> part of the MacOS uses java3d, but if it does, I'd be surprised if it > >>> relied on something in your home folder (MacOS tends to keep its system > >>> VMs - like Java and Python - separate from what users access as well as > >>> the users particular home directory). > >>> > >>> Also, have you given McV a shot since modifying the contents of > >>> ~/Library/Java/Extensions? > >>> > >>> Sean > >>> > >>>> Sean, > >>>> > >>>> Well, I took the plunge, downloaded the latest IDV and deleted those two > >>>> java3d jar files, then started IDV3.0U2. No re-install of the OS, > >>>> though. > >>>> > >>>> That seems to have done the trick! IDV is working normally so far. Now > >>>> I'm going to start pushing things a bit further in terms of the data > >>>> being read in (size of zidv files) and what I'm trying to do (overlay > >>>> flight tracks on satelite, radar and METAR data). > >>>> > >>>> Fingers crossed! > >>>> > >>>> On May 21, 2012, at 6:00 AM, Unidata IDV Support wrote: > >>>> > >>>>> Greetings Ben! > >>>>> > >>>>>> Greetings back at you Sean, > >>>>>> > >>>>>> First, thank you very much for continuing to work this problem. I > >>>>>> really appreciate it. > >>>>>> > >>>>>> Reinstalling the OS, eh? That seems a little scary to me.... never > >>>>>> done it, but I could give it a try. The new machine is running Snow > >>>>>> Leopard, not Lion. I suppose that the result would be the same. Do > >>>>>> you agree? > >>>>> > >>>>> I would think it would be the same, but I'm not sure. At the very > >>>>> least, I'd check out what, if anything, lives in > >>>>> ~/Library/Java/Extensions > >>>>> > >>>>>> > >>>>>> In the short term, I'm limping along on the older machine, running > >>>>>> IDV2.7.2 on Snow Leopard. I've got a big report due in about a week > >>>>>> and can't afford to have anything go weird on my machine until that > >>>>>> deadline's passed, so I'm going to wait until that's done before > >>>>>> considering reinstalling the OS. Hope you understand. > >>>>> > >>>>> Best wishes on that report! Have you tried updating to the latest IDV > >>>>> on your old machine (3.0U2)? Since the IDV uses your system Java, > >>>>> installing the new version won't hurt anything, and the performance > >>>>> will likely only get better with the newest release (there have been a > >>>>> lot of major memory improvements / bug fixes since 2.7.2). > >>>>> > >>>>>> > >>>>>> Another thought. This machine also runs Windows XP on Parallels on my > >>>>>> new machine. Maybe I could try to run IDV on there if your solution > >>>>>> doesn't work out on my new machine? > >>>>>> > >>>>> > >>>>> I have not tried the IDV on Parallels, but it's worth a shot - again, > >>>>> it wouldn't hurt anything to give it a try (well, except the 10-15 > >>>>> minutes to fire up the VM, install the IDV and see how it goes). > >>>>> Sometimes the 3D performance on a VM can be lacking, but I've heard > >>>>> good things about Parallels. If you give it a shot, please let me know > >>>>> how it turns out! > >>>>> > >>>>> Cheers! > >>>>> > >>>>> Sean > >>>>> > >>>>>> Thanks again, > >>>>>> > >>>>>> Ben > >>>>>> > >>>>>> On May 20, 2012, at 2:01 PM, Unidata IDV Support wrote: > >>>>>> > >>>>>>> Greetings Ben! > >>>>>>> > >>>>>>> I was finally able to get the IDV going again on my machine (still > >>>>>>> getting CGContextGetCTM and CGContextSetBaseCTM error, but they > >>>>>>> *seem* harmless at this point). It took two steps. First, I had to > >>>>>>> reinstall the OS. On Lion, I was able to just reinstall the System > >>>>>>> files without the need to reinstall all of my personal stuff (OS > >>>>>>> restore by holding command+r on restart and following the onscreen > >>>>>>> prompts). I also found an old copy of Java 3D (newly installed - I > >>>>>>> guess from a recent update?) in my home directory in > >>>>>>> ~/Library/Java/Extensions - I actually removed all of the stuff in > >>>>>>> there and, in combination with the OS reinstall (to completely > >>>>>>> refresh the java JRE), I was up and running again. Maybe check in > >>>>>>> ~/Library/Java/Extension to see if there are java3d jars and see what > >>>>>>> happens if you removed them? > >>>>>>> > >>>>>>> Cheers, > >>>>>>> > >>>>>>> Sean > >>>>>>> > >>>>>>>> IDV2.7.2 at least starts up on the old machine. > >>>>>>>> > >>>>>>>> On May 18, 2012, at 10:54, "Unidata IDV Support" <address@hidden> > >>>>>>>> wrote: > >>>>>>>> > >>>>>>>>> Unfortunately, not yet. I spent a good chunk of time yesterday > >>>>>>>>> trying to get things worked out on my machine, and I was unable to > >>>>>>>>> make progress. We tested a mac that hadn't been updated in a while > >>>>>>>>> and the IDV worked fine...we updated it, and the IDV spit out some > >>>>>>>>> warnings, but still ran. It looks this does not affect every Mac. > >>>>>>>>> I've found a few things online regarding this kind of error, and it > >>>>>>>>> looks like its affecting more than just the IDV and Java3d based > >>>>>>>>> applications. I'm hoping Apple will address this soon! > >>>>>>>>> > >>>>>>>>> Do you have access to another machine? I hate to say it, but that > >>>>>>>>> may be the best bet for now. > >>>>>>>>> > >>>>>>>>> Sean > >>>>>>>>> > >>>>>>>>>> Hi Sean, > >>>>>>>>>> > >>>>>>>>>> Any thoughts on these IDV & McV issues? > >>>>>>>>>> > >>>>>>>>>> Ben > >>>>>>>>>> > >>>>>>>>>> ------- > >>>>>>>>>> Ben C. Bernstein > >>>>>>>>>> Leading Edge Atmospherics, LLC > >>>>>>>>>> 720-771-3324 (cell) > >>>>>>>>>> http://icingweather.com > >>>>>>>>>> > >>>>>>>>>> On May 17, 2012, at 8:34 AM, Unidata IDV Support wrote: > >>>>>>>>>> > >>>>>>>>>>> Greetings Ben, > >>>>>>>>>>> > >>>>>>>>>>> I downloaded McV and could not get it to run on my system either > >>>>>>>>>>> (OSX 10.7.4, Java 1.6.0_31). When I try to run from the command > >>>>>>>>>>> line, I get errors like this: > >>>>>>>>>>> > >>>>>>>>>>> May 17 08:28:06 micromac java[5507] <Error>: CGContextGetCTM: > >>>>>>>>>>> invalid context 0x0 > >>>>>>>>>>> May 17 08:28:06 micromac java[5507] <Error>: CGContextSetBaseCTM: > >>>>>>>>>>> invalid context 0x0 > >>>>>>>>>>> > >>>>>>>>>>> and McV freezes at the "Loading Defaults" screen. When I run the > >>>>>>>>>>> IDV, I get the same kinds of errors on the command line, but it > >>>>>>>>>>> still starts up...except the Display screen is missing! I'm > >>>>>>>>>>> getting Java3D errors, which is preventing the IDV display from > >>>>>>>>>>> popping up. After digging around a bit, it seems as though a > >>>>>>>>>>> recent Mac update has 'killed' Java3D applications (it's a bigger > >>>>>>>>>>> problem than the IDV or McV). I'm still digging around to see if > >>>>>>>>>>> there is a solution to this. > >>>>>>>>>>> > >>>>>>>>>>> Sean > >>>>>>>>>>> > >>>>>>>>>>>> Hi Sean, > >>>>>>>>>>>> > >>>>>>>>>>>> I'm running 1.6.0.29 > >>>>>>>>>>>> > >>>>>>>>>>>> I have an ADDE account with SSEC now, but can't seem to get IDV > >>>>>>>>>>>> to talk that account when I tried it a few times yesterday. > >>>>>>>>>>>> Figured that I'm doing something wrong... never tried this > >>>>>>>>>>>> approach before. > >>>>>>>>>>>> > >>>>>>>>>>>> Do you think that I should re-install McV or might Java be the > >>>>>>>>>>>> issue? > >>>>>>>>>>>> > >>>>>>>>>>>> Thanks again, > >>>>>>>>>>>> > >>>>>>>>>>>> Ben > >>>>>>>>>>>> > >>>>>>>>>>>> On May 17, 2012, at 6:49 AM, Unidata IDV Support wrote: > >>>>>>>>>>>> > >>>>>>>>>>>>> Hi Ben, > >>>>>>>>>>>>> > >>>>>>>>>>>>> Which version of Java are you using (from the command line: > >>>>>>>>>>>>> java -version)? Also, McV is pretty much IDV with some > >>>>>>>>>>>>> additions, so if IDV runs, than McV should run. > >>>>>>>>>>>>> > >>>>>>>>>>>>> The reason I suggest McV is because it comes bundled with the > >>>>>>>>>>>>> ADDE server, which does the calculations on the raw files to > >>>>>>>>>>>>> convert them into things like IR brightness temperatures. When > >>>>>>>>>>>>> you access satellite data through the IDV satellite chooser, > >>>>>>>>>>>>> you connect to a remote ADDE server. Then, when you select a > >>>>>>>>>>>>> product to view, the ADDE server will do the necessary > >>>>>>>>>>>>> calculations before sending you the data to view. When reading > >>>>>>>>>>>>> the raw data off of disk, you need a local ADDE server to > >>>>>>>>>>>>> active the same functionality, which is why McV bundles the > >>>>>>>>>>>>> ADDE server. I think page two of this pdf explains how to do > >>>>>>>>>>>>> this in McV: > >>>>>>>>>>>>> > >>>>>>>>>>>>> http://www.ssec.wisc.edu/mcidas/software/v/docs/SatelliteImagery1.01.pdf > >>>>>>>>>>>>> > >>>>>>>>>>>>> Cheers! > >>>>>>>>>>>>> > >>>>>>>>>>>>> Sean > >>>>>>>>>>>>> > >>>>>>>>>>>>>> Hi Sean, > >>>>>>>>>>>>>> > >>>>>>>>>>>>>> When I go to run McV, it launches then freezes every time. I > >>>>>>>>>>>>>> had a fairly old version on this machine, so I downloaded the > >>>>>>>>>>>>>> latest version and it does exactly the same thing. Perhaps > >>>>>>>>>>>>>> uninstalling McV and reinstalling from scratch would help? > >>>>>>>>>>>>>> > >>>>>>>>>>>>>> Why do you feed that McV is the way to go for this case? > >>>>>>>>>>>>>> > >>>>>>>>>>>>>> Thanks, > >>>>>>>>>>>>>> > >>>>>>>>>>>>>> Ben > >>>>>>>>>>>>>> > >>>>>>>>>>>>>> On May 16, 2012, at 4:54 PM, Unidata IDV Support wrote: > >>>>>>>>>>>>>> > >>>>>>>>>>>>>>> Greetings Ben, > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>>> McV is the way to go for this case. What kind of issues were > >>>>>>>>>>>>>>> you having getting McV to run? I ask because many of the > >>>>>>>>>>>>>>> machines at SSEC are Macs running Snow Leopard, so it's odd > >>>>>>>>>>>>>>> that it won't work for you. > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>>> Cheers, > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>>> Sean > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> Hello, > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> I have downloaded some GOES-13 imager AREA files from NCDC's > >>>>>>>>>>>>>>>> CLASS site, > >>>>>>>>>>>>>>>> trying to get a look at the visible and especially the IR > >>>>>>>>>>>>>>>> images for a > >>>>>>>>>>>>>>>> couple of days in November 2010. > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> Using the IDV, I am able to read and plot these fields, but > >>>>>>>>>>>>>>>> the data > >>>>>>>>>>>>>>>> are raw. I can deal with this for vis imagery because it's > >>>>>>>>>>>>>>>> still possible > >>>>>>>>>>>>>>>> to look at the images and get a feel for how bright they > >>>>>>>>>>>>>>>> are. However, > >>>>>>>>>>>>>>>> I want to try to view the actual temperatures from the > >>>>>>>>>>>>>>>> long-wave IR and > >>>>>>>>>>>>>>>> don't know how to do that when all I have are the raw value > >>>>>>>>>>>>>>>> for channel 4. > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> NOAA's website > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> http://www.oso.noaa.gov/goes/goes-calibration/gvar-conversion.htm > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> provides equations for converting the raw values to > >>>>>>>>>>>>>>>> temperatures, but > >>>>>>>>>>>>>>>> how can I apply such equations in IDV so that I can > >>>>>>>>>>>>>>>> calculate/convert > >>>>>>>>>>>>>>>> from the raw ch-4 values to temperatures then display them? > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> If an alternative data source or method of plotting would be > >>>>>>>>>>>>>>>> a better > >>>>>>>>>>>>>>>> choice than the CLASS/IDV combination that I've chose, > >>>>>>>>>>>>>>>> please let me know. > >>>>>>>>>>>>>>>> As a backup, I tried to use McIDAS-V for this task, but > >>>>>>>>>>>>>>>> can't even get > >>>>>>>>>>>>>>>> the software to run on my machine (Mac OSX10.6.8). > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> Perhaps GINI data could work? I haven't been able to find a > >>>>>>>>>>>>>>>> good archive > >>>>>>>>>>>>>>>> of that, though. > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> Any help would be appreciated. > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> Many thanks, > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>>> Ben Bernstein > >>>>>>>>>>>>>>>> > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>>> Ticket Details > >>>>>>>>>>>>>>> =================== > >>>>>>>>>>>>>>> Ticket ID: VRB-317344 > >>>>>>>>>>>>>>> Department: Support IDV > >>>>>>>>>>>>>>> Priority: Normal > >>>>>>>>>>>>>>> Status: Open > >>>>>>>>>>>>>>> > >>>>>>>>>>>>>> > >>>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> > >>>>>>>>>>>>> Ticket Details > >>>>>>>>>>>>> =================== > >>>>>>>>>>>>> Ticket ID: VRB-317344 > >>>>>>>>>>>>> Department: Support IDV > >>>>>>>>>>>>> Priority: Normal > >>>>>>>>>>>>> Status: Open > >>>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> Ticket Details > >>>>>>>>>>> =================== > >>>>>>>>>>> Ticket ID: VRB-317344 > >>>>>>>>>>> Department: Support IDV > >>>>>>>>>>> Priority: Normal > >>>>>>>>>>> Status: Open > >>>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> > >>>>>>>>> > >>>>>>>>> > >>>>>>>>> Ticket Details > >>>>>>>>> =================== > >>>>>>>>> Ticket ID: VRB-317344 > >>>>>>>>> Department: Support IDV > >>>>>>>>> Priority: Normal > >>>>>>>>> Status: Open > >>>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> Ticket Details > >>>>>>> =================== > >>>>>>> Ticket ID: VRB-317344 > >>>>>>> Department: Support IDV > >>>>>>> Priority: Normal > >>>>>>> Status: Open > >>>>>>> > >>>>>> > >>>>>> > >>>>> > >>>>> > >>>>> Ticket Details > >>>>> =================== > >>>>> Ticket ID: VRB-317344 > >>>>> Department: Support IDV > >>>>> Priority: Normal > >>>>> Status: Open > >>>>> > >>>> > >>>> > >>> > >>> > >>> Ticket Details > >>> =================== > >>> Ticket ID: VRB-317344 > >>> Department: Support IDV > >>> Priority: Normal > >>> Status: Open > >>> > >> > >> > > > > > > Ticket Details > > =================== > > Ticket ID: VRB-317344 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > Ticket Details =================== Ticket ID: VRB-317344 Department: Support IDV Priority: Normal Status: Closed