[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[McIDAS #VQU-472558]: imgcopy UNIT parameter

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: [McIDAS #VQU-472558]: imgcopy UNIT parameter
  • Date: Thu, 29 Nov 2018 15:36:37 -0700
Hi Carol,

re: use IMGPROBE to get units of an image

> Ok great! This helps a lot.

re:
> So then how to you choose the right UNIT from the 4 in your given example?

The "right" unit is the one that one desires in the output netCDF file.
To answer which one is best for your purposes, you have to answer the
question of what you want to use the netCDF file(s) for.

re:
> I'm guessing you'd want to use BRIT or TEMP in your example.

BRIT is a supported calibration type for every image as is RAW
(in case of 1-byte images RAW and BRIT are typically the same).
TEMP is a supported calibration type for Infrared images.

re:
> I guess, what
> is the most common way to do this kind of conversion for an infrared
> channel? When would you use RAW?

If I were going to use the output netCDF file simply as a display,
I'd use BRIT.  If I want to interrogate the image in an application
like the IDV, I'd use TEMP for Infrared images.

re:
> Thanks,

No worries.

Cheers,

Tom
--
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: VQU-472558
Department: Support McIDAS
Priority: Normal
Status: Closed
===================
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata 
inquiry tracking system and then made publicly available through the web.  If 
you do not want to have your interactions made available in this way, you must 
let us know in each email you send to us.