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[IDV #XIB-531976]: IDV - implmenting RGBs as derived quantities under Image Operations

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.

  • Subject: [IDV #XIB-531976]: IDV - implmenting RGBs as derived quantities under Image Operations
  • Date: Thu, 20 Sep 2007 14:37:29 -0600
Hi HP-

> Institution: EUMETSAT
> Package Version: 2.4b1 build date:@DATE@
> Operating System: Linux
> Hardware Information: Java: home: /home/user/IDV_2.4b1/jre version: 1.5.0_11 
> j3d:1.3.1
> Inquiry: Hi
> 
> I am implementing my RGBs as derived quantities under Image Operations
> in the Fields Selector. That works fine for data from EUMETSAT's ADDE server.
> However, it fails when trying to access archived data through localhost and
> Marianne's msg_server (Image Operations does not even appear in the list.
> Marianne and me think that this might be do to incomplete information 
> delivered
> through her server. If this is true, what are the missing bits (cards)?

The available calibration units come across as comment cards in the 
AreaDirectory
(as does the center lat/lon) that shows up in the widget.   So, for a request
to the EUM_AD dataset, we get:

card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 1 = RAW "RAW "
card[7] = Valid calibration unit for band 1 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 1 = REFL "REFLECTIVITY"
card[9] = Valid calibration unit for band 1 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 2 = RAW "RAW "
card[7] = Valid calibration unit for band 2 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 2 = REFL "REFLECTIVITY"
card[9] = Valid calibration unit for band 2 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 3 = RAW "RAW "
card[7] = Valid calibration unit for band 3 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 3 = REFL "REFLECTIVITY"
card[9] = Valid calibration unit for band 3 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 4 = RAW "RAW "
card[7] = Valid calibration unit for band 4 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 4 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 4 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 5 = RAW "RAW "
card[7] = Valid calibration unit for band 5 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 5 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 5 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 6 = RAW "RAW "
card[7] = Valid calibration unit for band 6 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 6 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 6 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 7 = RAW "RAW "
card[7] = Valid calibration unit for band 7 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 7 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 7 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 8 = RAW "RAW "
card[7] = Valid calibration unit for band 8 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 8 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 8 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 9 = RAW "RAW "
card[7] = Valid calibration unit for band 9 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 9 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 9 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 10 = RAW "RAW "
card[7] = Valid calibration unit for band 10 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 10 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 10 = BRIT "BRIGHTNESS "
card[0] = Center latitude = .0180888
card[1] = Center longitude = .0179676
card[2] = Computed Latitude resolution (km) = 3.01725
card[3] = Latitude resolution (km) 3
card[4] = Computed Longitude resolution (km) = 2.99704
card[5] = Longitude resolution (km) 3
card[6] = Valid calibration unit for band 11 = RAW "RAW "
card[7] = Valid calibration unit for band 11 = RAD "RADIANCE "
card[8] = Valid calibration unit for band 11 = TEMP "TEMPERATURE "
card[9] = Valid calibration unit for band 11 = BRIT "BRIGHTNESS "

one group for each band.

(Notice that this is why  Reflectivity shows up in the unit widget as I
mentioned in my other note)

> While we are here, a second quest. When I implement an RGB I first create a
> parameter group and the create the formula where under derived tab I select 
> this
> group again. I would expect then that the parameters widget below is filled in
> automatically ,which is not the case. I have to assemble the list a second 
> time by
> hand. What am I doing wrong? Or, if not what is the use of the Parameter 
> Group?

Yes, this is confusing.  You can either enter a parameter group, or you 
can manually enter the parameters.  We'll change that to put an "OR"
between the two.  So, you should just be able to create your parameter group
and use that.  

Don

Ticket Details
===================
Ticket ID: XIB-531976
Department: Support IDV
Priority: Normal
Status: Open