Greetings Peter,
The "oops" error message is coming from here as a failed attempt to read the
station identifier...
https://github.com/Unidata/gempak/blob/main/gempak/source/programs/upc/programs/nexr2rhi/rnex2.c#L94
I am unsure of your RADFIL nomenclature, I tried reproducing this locally after
downloading the file from here:
https://s3.amazonaws.com/unidata-nexrad-level2/index.html#2026/03/17/KCLE/
and then setting `RADFIL = KCLE20260317_125917_V06` , but then I get a
segfault
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x7f97e80238a0 in ???
#1 0x7f97e8022a45 in ???
#2 0x7f97e7c3fc2f in ???
#3 0x43def6 in wsr88d_ray_to_float_type31
at /home/akrherz/projects/gempak/extlibs/rsl/src/wsr88d.c:1092
#4 0x43a0f7 in wsr88d_load_sweep_into_volume
at /home/akrherz/projects/gempak/extlibs/rsl/src/wsr88d_to_radar.c:106
#5 0x43a79f in RSL_wsr88d_to_radar
at /home/akrherz/projects/gempak/extlibs/rsl/src/wsr88d_to_radar.c:361
#6 0x40879c in rnex2_
at
/home/akrherz/projects/gempak/gempak/source/programs/upc/programs/nexr2rhi/rnex2.c:152
#7 0x403d81 in nexr2rhi
at
/home/akrherz/projects/gempak/gempak/source/programs/upc/programs/nexr2rhi/nexr2rhi.f:171
#8 0x404be2 in main
at
/home/akrherz/projects/gempak/gempak/source/programs/upc/programs/nexr2rhi/nexr2rhi.f:331
Segmentation fault (core dumped)
This Unidata program source code hasn't been touched in 14 years(!!). You may
need to look at other approaches to generate such plots!
daryl
________________________________________
From: gembud <gembud-bounces@xxxxxxxxxxxxxxxx> on behalf of Manousos, Peter C
<pmanousos@xxxxxxxxxxxxxxxxxxx>
Sent: Thursday, April 23, 2026 10:32 AM
To: GEMBUD (gembud@xxxxxxxxxxxxxxxx)
Subject: [gembud] nexr2rhi - can that be used witn .ar2v data from NCEI
directly?
Greetings – experimenting with creating a cross section using a level ii
archive volume scan retrieved from NCEI (file name
KxxxYYYYMMDD_HHMMSS_V06.ar2v) and following the example online 13. Radar
Programs<https://unidata.github.io/gempak/tutorial/radar_programs.html> (last
one on the page).
Using GEMPAK 7.14.0.1’s NEXR2RHI – my settings are as follows but see – note
the line “oops look like…” in the output and no data is read .
Just wondering first if we can use the NCEI Archive Level II data and if so any
tips on what to enter for radfil since the example on line doesn’t match the
help in nex2rhi (do a ph radfil to see what I mean)
Thanks..
GEMPAK-NEXR2RHI>r
oops look file NEXRII|/home/awips/KCLE20260317_125917_V06.ar2v -1
NEXR2RHI PARAMETERS
Radar file: NEXRII|/home/awips/KCLE20260317_125917_V06.ar2v
Date/time:
Vertical coordinate: hght
Endpoints: @300;460>@620;460
Radar Center point 460,460 Radar Lat 0.00 Radar Lon 0.00
Number of horizontal points: 920
Number of vertical points: 251
Scaling factor: 10** 0 Max: 0.000000 Min: 0.000000
Panel: 0
LEVELS: 0.00
COLORS: 6
LINTYP: 1
LINWID: 1
LABEL: 1
Enter <cr> to accept parameters or type EXIT:
CXSTNS = cle>cak
GVCORD = hght
PTYPE = lin
YAXIS = 0/20000
CINT = 5/-25/50
SCALE = 0
LINE = 6
BORDER = 1
TITLE = test
CLEAR = yes
DEVICE = xw|test|1024;768
TEXT = .8
PANEL = 0
CLRBAR = 1
CONTUR = 0
FINT =
FLINE =
CTYPE = c
RADFIL = NEXRII|/home/awips/KCLE20260317_125917_V06.ar2v
RADPARM = dz
RADTIM = last
INTERP = y
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