Station data to grid data

[Qiong Zheng]

Hi,
I have used "oacres", it works very well. One thing you can try is, open the
grid file (cal.controla.1dom.nc <http://cal.controla.1dom.nc>) firstly, then
open the station file (a.ctl) (don't forget to change the OACRES command!).
Good Luck
Qiong

 On 11/21/05, Hui Du <huidu at ucdavis.edu> wrote:
>
> Hello, grads users
> I am trying to convert the station data to grid data using the function
> 'oacres'.
> I created a station file for one variable.
> I also successfully got the map file using 'stnmap'
> Then I opened two files to try to get the grid data, the following are my
> command and error information.
>
> *************************************************************************************
> ga-> open a.ctl
> Scanning description file: a.ctl
> Data file controla.dat is open as file 1
> LON set to 0 360
> LAT set to -90 90
> LEV set to 500 500
> Time values set: 1995:8:1:0 1995:8:1:0
> ga-> sdfopen ../cal.controla.1dom.nc
> Scanning self-describing file: ../cal.controla.1dom.nc
> SDF file ../cal.controla.1dom.nc is open as file 2
> ga-> set lon 230 250
> LON set to 230 250
> ga-> set lat 30 45
> LAT set to 30 45
> ga-> set t 100
> Time values set: 1995:8:25:18 1995:8:25:18
> ga-> d oacres(t2.2,t2)
> Segmentation fault (core dumped)
> *******************************************************************
> then grads broke, I have no idea what made this happen.
>
> For the a.clt, its script is the following
> ***********************************************
> dset controla.dat
> title t2
> dtype station
> stnmap t2.map
> undef -999
> tdef 1697 linear 00z1aug1995 6hr
> vars 1
> t2 0 99 t2 data
> endvars
> *****************************************************
> I don't think it is a good idea to convert my station data because with
> only one surface variable t2, the size of station data is about 580M.
>
> Has anyone have any program to do this outside grads? Or can you tell me
> where the source code of the function 'oacres' is
>
> Thanks a lot
>
>
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