newbie: trying to print ann average vertical profile numbers at specific lat, lon for monthly gridded binary file
Steve Piper
scpiper at UCSD.EDU
Mon Sep 29 12:06:11 EDT 2008
Arlindo - thanks for the info!
Steve
Dr. Stephen C. Piper
Carbon Dioxide Research Group
Scripps Institution of Oceanography
La Jolla, CA 92093-0244
tel: 858-534-4230 ext 15
fax: 858-534-8814
On Sep 26, 2008, at 5:22 PM, Arlindo da Silva wrote:
> On Fri, Sep 26, 2008 at 5:43 PM, Steve Piper <scpiper at ucsd.edu> wrote:
> Hi,
>
> I just started using Grads. Great program!
>
> I would like to write out in ascii, the annual average vertical
> profile at
> all 9 levels at a specified location (lat and lon) in
> the grid for variable bioa.
>
> Let's say your specific location is (45N,90W), then
>
> ga-> set lon -90
> ga-> set lat 45
>
> Next let's select all vertical levels
>
> ga-> set z 1 9
>
> To get ASCII output for the annual mean of variable bio:
>
> ga-> set gxout print
> ga-> d ave(bioa,t=1,t=12)
>
> To have this saved to a file see this recipe:
>
> http://cookbooks.opengrads.org/index.php?title=Recipe-002:_Saving_GrADS_variable_data_to_a_text_file
>
> Good Luck,
>
> Arlindo
>
>
>
>
> I am reading a gridded data file that was written with Fortran
> statement declaration
>
> real x(72,44,9,12,26) ! lon, lat, levels, months, variables
>
> My ctl file is:
>
> DSET /Users/piper/Grads-test/CSU.gurney.L1.mmean.le.3D
> * fortran sequential file c(72,44,9,12,26)
> * lon lat lev month tracer
> * sequential means fortran binary with record length integers
> in record
> * otherwise would use stream or direct access
> * SUN is big-endian (had to swap to make it so with zz.f)
> * OPTIONS big_endian for SUN, mac powerpc?
> OPTIONS sequential
> * input file is from little_endian machine
> OPTIONS little_endian
> TITLE CSU Gurney 3D monthly output for T3L1
> UNDEF 1.e36
> XDEF 72 linear -180 5
> YDEF 44 linear -86 4
> ZDEF 9 levels 1000 925 850 700 500 400 300 200 100
> * would like to use middle of every 365 calendar month - this is
> close
> TDEF 12 linear 16jan94 1mo
> VARS 26
> fos90 9 -1,20 fos90
> * -1 = non-standard binary, 20 = var and time reordered
> fos95 9 -1,20 fos95
> bioa 9 -1,20 bioa
> dum 9 -1,20 dum
> bio1 9 -1,20 bio1
> bio2 9 -1,20 bio2
> bio3 9 -1,20 bio3
> bio4 9 -1,20 bio4
> bio5 9 -1,20 bio5
> bio6 9 -1,20 bio6
> bio7 9 -1,20 bio7
> bio8 9 -1,20 bio8
> bio9 9 -1,20 bio9
> bio10 9 -1,20 bio10
> bio11 9 -1,20 bio11
> oce1 9 -1,20 oce1
> oce2 9 -1,20 oce2
> oce3 9 -1,20 oce3
> oce4 9 -1,20 oce4
> oce5 9 -1,20 oce5
> oce6 9 -1,20 oce6
> oce7 9 -1,20 oce7
> oce8 9 -1,20 oce8
> oce9 9 -1,20 oce9
> oce10 9 -1,20 oce10
> oce11 9 -1,20 oce11
> ENDVARS
>
>
> set lon -180 180 # default is 0 360 when I issue q dim
> set lat -86 86 # this was the default
> set lev 1000 100 # default was 1000
> set t 1 12 # default was t 1
>
> q dim
>
> Default file number is: 1
> X is varying Lon = -180 to 180 X = 1 to 73
> Y is varying Lat = -86 to 86 Y = 1 to 44
> Z is varying Lev = 1000 to 100 Z = 1 to 9
> T is varying Time = 00Z16JAN1994 to 00Z16DEC1994 T = 1 to 12
> E is fixed Ens = 1 E = 1
>
> Not sure how to produce annual average array newbioa(72,44,9) from
> bioa(72,44,9,12)
>
> Tried this:
>
> define newbioa = ave(bioa,t=1,t=12)
>
> It gives 108 lines (=9 x 12) of output stating
> Averaging. dim = 3, start = 1, end =12
>
> ga-> q dim
> Default file number is: 1
> X is varying Lon = -180 to 180 X = 1 to 73
> Y is varying Lat = -86 to 86 Y = 1 to 44
> Z is varying Lev = 1000 to 100 Z = 1 to 9
> T is varying Time = 00Z16JAN1994 to 00Z16DEC1994 T = 1 to 12
> E is fixed Ens = 1 E = 1
>
> d gr2stn(newbioa,60.75,89.38)
> Operation error: Invalid dimension environment
> Too many varying dimensions
>
> set t 1
>
> ga-> q dim
> Default file number is: 1
> X is varying Lon = -180 to 180 X = 1 to 73
> Y is varying Lat = -86 to 86 Y = 1 to 44
> Z is varying Lev = 1000 to 100 Z = 1 to 9
> T is fixed Time = 00Z16JAN1994 T = 1
> E is fixed Ens = 1 E = 1
>
> d gr2stn(newbioa,60.75,89.38)
> Operation error: Invalid dimension environment
> Looping dimension does not vary
>
> Not sure why the gr2stn statements do not work. Help?
> Am I on the right track?
>
> Thanks!
>
> Steve
>
>
>
> --
> Arlindo da Silva
> dasilva at alum.mit.edu
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