[gradsusr] two-dimensional (R-Z) data files

[Sim Aberson]

I have code that creates an azimuthal average around the center of a TC
and writes the values out into a file with a control file for GrADS.  I
have attached them both.  The grid is 350 points in the radial direction
at 0.5-km intervals, with 24 pressure levels.

 XDEF 350 LINEAR 0 0.5
 YDEF 1 LINEAR 0 0.5
 ZDEF           24  levels
 1000 975 950 925 900 875 850 825 800 775 750 700 650 600 550 500 450
400 350 300 250 200 150 100

I've checked the values in the data file and they look good.

When I run GrADS and try to plot any variable, I get:

ga-> open azim.ctl
Scanning description file:  azim.ctl
Data file azim.dat is open as file 1
LON set to 0 174.5
LAT set to 0 0
LEV set to 1000 100
Time values set: 2011:10:27:13 2011:10:27:13
E set to 1 1
ga-> d azimhgt
Data Request Warning:  Varying Z dimension environment...
  but the requested variable has no Z dimension
  Entire grid contents are set to missing data
  Warning issued for variable = azimhgt
Cannot contour grid - all undefined values

I get the same result if I set z 1 24 before trying to display.  It
seems like this should be extremely easy, but I'm stumped.

Thanks,
Sim

-- 
Sim Aberson (he/him/his)
NOAA/AOML/Hurricane Research Division   Miami, FL
https://www.aoml.noaa.gov/hrd/people/simdaberson/

AOML stands on the land of the Tequesta, Calusa, Miccosukee and Seminole
peoples.  This acknowledgment is one way to educate ourselves about this
land, its history, and our relationships with the land and each other.
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 DSET ^azim.dat
 TITLE Azimuthal Average
 OPTIONS sequential
 UNDEF 9.999E+20
 XDEF 350 LINEAR 0 0.5
 YDEF 1 LINEAR 0 0.5
 ZDEF           24  levels
 1000 975 950 925 900 875 850 825 800 775 750 700 650 600 550 500 450 400 350 300 250 200 150 100
 TDEF 1 LINEAR 13Z27oct2011 1mo
 VARS 6
 azimhgt            0  7,100,0 ** (profile) Geopotential height [gpm]
 azimtemp            0  11,100,0 ** (profile) Temp. [K]
 azimdwpt            0  17,100,0 ** (profile) Dew point temp. [K]
 azimdzdt            0  40,100,0 ** (profile) Geometric vertical velocity [m/s]
 azimrwind            0  33,100,0 ** (profile) radial wind [m/s]
 azimtwind            0  33,100,0 ** (profile) tangential wind [m/s]
 ENDVARS