[IDV #VRB-317344]: Conversion of infrared data to temperature

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