Hi Kwan,
re:
> I suppose I can make use of the NEXRAD Level III Hybrid Hydrometeor
> Classification to re-colorize the NEXRCOMP/1KN0R-NAT reflectivity images.
I would suggest using the digital hybrid reflectivity as it has higher
data resolution (more levels) than the 1KN0R-NAT products.
re:
> What ADDE group name can I use to access the HHC images?
Remember that you can interrogate the ADDE server to see which datasets
are defined within an ADDE group. For instance:
DSINFO I NEXRCOMP
Dataset Names of Type: IMAGE in Group: NEXRCOMP
Name NumPos Content
------------ ------ --------------------------------------
10KRCM-NAT 99999 10 km RCM National Composite Radar
1KDHR-NAT 99999 1 km DHR US Digital Hybrid Reflectivity Composite
1KDVL-NAT 99999 1 km DVL US Digital Vert. Int. Liquid H2O Composite
1KEET-NAT 99999 1 km EET US Enhanced Echo Tops Composite
1KHHC-NAT 99999 1 km HHC US Hybrid Hydrometeor Class. Composite
1KN0R-NAT 99999 1 km N0R US Base Reflectivity Composite
2KN1P-NAT 99999 2 km N1P US 1-hr Precip. Composite
4KNTP-NAT 99999 4 km NTP US Storm Total Precip. Composite
6KN0R-NAT 99999 6 km N0R National Base Reflectivity Composite
DSINFO -- done
re: maximum image size
I verified your finding that a frame of 4800 x 6400 is too large for
McIDAS-X. All I can suggest is making the frame size smaller so
that the mapping works correctly. Given that the size of the
NEXRCOMP composites is significantly smaller than 4800 x 6400, this
should be reasonably easy.
Reminder of product size:
IMGLIST NEXRCOMP/1KDHR-NAT FORM=ALL
Image file directory listing for:NEXRCOMP/1KDHR-NAT
Pos Satellite/ Date Time Center Res (km) Image_Size
sensor Lat Lon Lat Lon
--- ------------- ------------ -------- ---- ---- ----- ----- ------------
96 RADAR 18 MAR 17077 15:50:00 TWX
Band: 28 No Information Available 1.02 1.02 3000 x 4736
proj: 0 created: 2017077 155118 memo: 1 km CONUS DHR Composite [dBZ]
type:NEXR cal type:RAW
offsets: data= 1964 navigation= 256 calibration= 0 auxiliary= 768
doc length: 0 cal length: 0 lev length: 0 PREFIX= 0
valcod: 0 zcor: 0 avg-smp: N
lcor: 1 ecor: 1 bytes per pixel: 1 ss: 7
Resolution Factors (base=1): Line= 1.0 Element= 1.0
IMGLIST: done
You can see from this listing that the product size, 3000x4736, is _way_ smaller
than your frame size, 4800x6400. You can easily fit the image in a frame that
is 3200x5000, and mapping is fully supported for this size frame.
Cheers,
Tom
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Ticket Details
===================
Ticket ID: VSG-323612
Department: Support McIDAS
Priority: Normal
Status: Closed
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