Memory optimization (was Re: Performance tuning)

[Wesley Ebisuzaki]

Stefan,

Grib2 stores all longitudes as positive numbers.  g2ctl simply
reads the left longitude (300) and grids the followin
gird (in my test file)

       ydef 95 linear 43.000000 0.5
       xdef 321 linear 300.000000 0.500000

Your scripts don't anticipate the grid going from 300 to 400 degrees.
Sounds like something that needs to be fixed in g2ctl.

            Wesley


Stefan Gofferje wrote:
> Hi,
>
> Wesley Ebisuzaki schrieb:
>
>> Another mistake.  :(   Guess that is what happens when you have 173
>> different options.
>> The arguments of -small_grib are
>>
>> -sh-3.00$ wgrib2 -help -small_grib
>> wgrib2 v0.1.7.7f 9/2008 (names removed)
>>  -small_grib      out  X Y Z  make small domain grib file X=lonW:lonE
>> Y=latS:latN Z=file (beta)
>>
>> Try    $WGRIB2 ${FILENAME} -small -60:100 43:90 ${FILENAME}.extracted
>>
>
> Are you sure, that small_grib is working correctly?
> When I use -undefine out_box -60:100 43:90, everything goes fine.
> Now, with -small_grib -60:100 43:90 I get lots of
> "Data Request Warning:  Request beyond file limits"
> and no charts.
>
> This are my map definitions. I have to say that I came to the values by
> testing rather than thinking about them... But to me it looks like all
> values are within the boundaries...
>
> if (map = 'nordic')
>   'set mproj nps'
>   'set mpvals -10 51 48 80'
>   'set lon -60 100'
>   'set lat 43 90'
>   'set mpdset newmap'
> endif
>
> if (map = 'finland')
>   'set mproj nps'
>   'set mpvals 10 40.63 59 71'
>   'set lon 0 60'
>   'set lat 55 80'
>   'set mpdset hires'
> endif
>
> if (map = 'germany')
>   'set mproj nps'
>   'set mpvals 0 20 46.15 57'
>   'set lon -15 60'
>   'set lat 45 70'
>   'set mpdset hires'
> endif
>
> Terve,
> Stefan
>
> --
> Last words of a stormchaser:
> "Where is that rotation on the radar?!"
>