Gembuds,
I'm having trouble using GDEDIT to ingest a new grid into an existing GFS
GEMPAK grid file.
Every morning we convert GFS grib2 -> GEMPAK grid files using NAGRBI2.
GEMPAK-NAGRIB2>
GBFILE=gfs.t00z.pgrbf2011032503.grib2
GDOUTF=gfs_3_20110325_0000_003.grd
PROJ=
GRDAREA=
KXKY=
MAXGRD = 1500
CPYFIL = gds
GAREA = grid
OUTPUT = n
G2TBLS=
G2DIAG=
OVERWR = NO
This produces gfs_3_20110325_0000_003.grd
This is too big to attach (33mb) so I made a copy using GDCFIL and copied
over TMPK@2%HGHT using GDMOD
(attached as gfs_3_20110325_0000_003_small.grd.tar.gz)
GDLIST was then used to create a sample input file for GDEDIT
GEMPAK-GDLIST>l
GDATTIM = last
GLEVEL = 2
GVCORD = hght
GFUNC = tmpk
GDFILE = gfs_3_20110325_0000_003_small.grd
GAREA = -90;-180;90;180
PROJ = ced
SCALE = 0
OUTPUT = f/tmpk_sample.dat
This produces tmpk_sample.dat (attached as tmpk_sample.tar.gz)
I then copy "tmpk_sample.dat" -> "test_sample.dat" and change the PARM name
from "TMPK" to "TEST"
When I follow these steps with other grid, I should be able to ingest the
new grid "TEST@2%HGHT" into gfs_3_20110325_0000_003.grd using GDEDIT. In
this case it doesn't work and kicks back the error "[GDEDIT -5] The grid
size in the edit file is incorrect." with both "GPACK=" and "GPACK=NONE"
GEMPAK-GDEDIT>l
GDEFIL = test_sample.dat
GDFILE = gfs_3_20110325_0000_003.grd
GPACK =
GEMPAK-GDEDIT>r
[GDEDIT -5] The grid size in the edit file is incorrect.
Parameters requested: GDEFIL,GDFILE,GPACK.
GEMPAK-GDEDIT>
I then copy "test_sample.dat" to "test_sample2.dat"
I see that it has the following header:
--BEGIN HEADER
Grid file: gfs_3_20110325_0000_003.grd
GRID IDENTIFIER:
TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
110325/0000F003 2 HGHT TEST
AREA: -90;-180;90;180 GRID SIZE: 360
181
COLUMNS: 180 180 ROWS: 1 181
Scale factor: 10** 0
COLUMN: 180
ROW181 240.51 240.51 240.51 240.51 240.51 240.51 240.51
240.51
--END HEADER
It appears as if the COLUMNS are not correct in the header as there are in
fact 361 columns. So I update test_sample2.dat with the correct number of
columns per the instructions on
http://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gdedit
--BEGIN HEADER
Grid file: gfs_3_20110325_0000_003.grd
GRID IDENTIFIER:
TIME1 TIME2 LEVL1 LEVL2 VCORD PARM
110325/0000F003 2 HGHT TEST
AREA: -90;-180;90;180 GRID SIZE: 361
181
COLUMNS: 1 361 ROWS: 1 181
Scale factor: 10** 0
COLUMN: 1 2 3 4 5 6 7
8
9 10 11 12 13 14 15
16
17 18 19 20 21 22 23
24
25 26 27 28 29 30 31
32
33 34 35 36 37 38 39
40
41 42 43 44 45 46 47
48
49 50 51 52 53 54 55
56
57 58 59 60 61 62 63
64
65 66 67 68 69 70 71
72
73 74 75 76 77 78 79
80
81 82 83 84 85 86 87
88
89 90 91 92 93 94 95
96
97 98 99 100 101 102 103
104
105 106 107 108 109 110 111
112
113 114 115 116 117 118 119
120
121 122 123 124 125 126 127
128
129 130 131 132 133 134 135
136
137 138 139 140 141 142 143
144
145 146 147 148 149 150 151
152
153 154 155 156 157 158 159
160
161 162 163 164 165 166 167
168
169 170 171 172 173 174 175
176
177 178 179 180 181 182 183
184
185 186 187 188 189 190 191
192
193 194 195 196 197 198 199
200
201 202 203 204 205 206 207
208
209 210 211 212 213 214 215
216
217 218 219 220 221 222 223
224
225 226 227 228 229 230 231
232
233 234 235 236 237 238 239
240
241 242 243 244 245 246 247
248
249 250 251 252 253 254 255
256
257 258 259 260 261 262 263
264
265 266 267 268 269 270 271
272
273 274 275 276 277 278 279
280
281 282 283 284 285 286 287
288
289 290 291 292 293 294 295
296
297 298 299 300 301 302 303
304
305 306 307 308 309 310 311
312
313 314 315 316 317 318 319
320
321 322 323 324 325 326 327
328
329 330 331 332 333 334 335
336
337 338 339 340 341 342 343
344
345 346 347 348 349 350 351
352
353 354 355 356 357 358 359
360
361
ROW181 240.51 240.51 240.51 240.51 240.51 240.51 240.51
240.51
--END HEADER
It fails again.
GEMPAK-GDEDIT>l
GDEFIL = test_sample.dat
GDFILE = gfs_3_20110325_0000_003.grd
GPACK =
GEMPAK-GDEDIT>r
[GDEDIT -5] The grid size in the edit file is incorrect.
Parameters requested: GDEFIL,GDFILE,GPACK.
GEMPAK-GDEDIT>
Is there any possible way to use GDEDIT to ingest grids into this GFS GEMPAK
file?
Regards,
Evan Lowery
Attachment:
tmpk_sample.tar.gz
Description: GNU Zip compressed data
Attachment:
gfs_3_20110325_0000_003_small.grd.tar.gz
Description: GNU Zip compressed data
Attachment:
test_sample2.tar.gz
Description: GNU Zip compressed data
gembud archives: