[McIDAS #GBO-964406]: Fwd: IR color table

Hi Carol,

re:
> Right, channel 13 is probably the better choice, but another collaborator
> on this project was using channel 14 for most of his IR imagery, so I
> decided to use the same channel.

OK, I was just curious.  Aside: using channel 14 may be a very good choice
for GOES-17 (which, as of 18 UTC today, is now GOES-West) since that channel
gets affected by imperfect detector cooling at a higher temperature than
channel 13.

re:
> I've attached the enhancement from Tim Schmidt. I would check with him to
> make sure it's ok to distribute with a larger audience. He had originally
> sent it to me to use for RELAMPAGO since NOAA was kind of involved.

I can't imagine anyone caring about distribution of a McIDAS enhancement
table.

re:
> I'm still kind of confused how the stretch table works. This is the stretch
> table I'm using right now.
> 
> BREAKPOINTS STORED IN TABLE : IRTEMP.ST
> INPUT       OUTPUT
> -----       ------
> 163           255
> 241.9999      177
> 242           176
> 330           0
> CALIBRATION TYPE  : GVAR
> CALIBRATION UNITS : TEMP
> BAND NUMBER       : -1
> INTERPOLATION TYPE: LIN
> su.k: DONE
> 
> How would I edit the breakpoints to stretch the color scale to about 20 K
> warmer?

Even though the UNIT specified in this stretch is TEMP, a stretch simply
remaps input brightness to output brightness values.  This is why my
previous email suggested that you need to figure out the range of brightnesses
that maps to the range of temperatures that you want to highlight.

Also, it is not clear to me what you had/have in mind wrt to use of a
stretch coupled with the enhancement that Tim provided.  The question
is which range of colors in Tim's enhancement do you want to map to the
the temperature range that you mentioned originally?

Cheers,

Tom
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Ticket Details
===================
Ticket ID: GBO-964406
Department: Support McIDAS
Priority: Normal
Status: Closed
===================
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