[gradsusr] Problem in loading variables in different files.

[Hang]

Hi,

I want to do some calculations using the values in different files but an error 
message was shown :

Data Request Error: Invalid grid coordinates
  World coordinates convert to non-integer  grid coordinates
    Variable = vwnd10m  Dimension = 1 
Operation Error:  Error from ave function
  Error ocurred at column 32
DEFINE error:  Invalid expression. 


The following are the main components of my script:


'sdfopen /home2/h08hang/redata/uwnd10m.mon.mean.nc'
'set lat -90 90'
'set lon 0 360'
'set t 1 753'
'define uwnd10m=uwnd'
'close 1'
 
'sdfopen /home2/h08hang/redata/vwnd10m.mon.mean.nc'
'set lat -90 90'
'set lon 0 360'
'set t 1 753'
'define vwnd10m=vwnd'
'close 1'
 
'sdfopen /home2/h08hang/redata/shum2m.mon.mean.nc'
'set lat -90 90'
'set lon 0 360'
'set t 1 753'
'define shum2m=shum'
'close 1'

'sdfopen /home2/h08hang/redata/uwnd.mon.mean.nc'

'sdfopen /home2/h08hang/redata/vwnd.mon.mean.nc'
 
'sdfopen /home2/h08hang/redata/shum.mon.mean.nc'
 
....
   
   lon1=112.5
   lon2=115
   lat1=22.5
   lat2=25
 
   'set lat 'lat1' 'lat2
   'set lon 'lon1
   'set t 'time
   'set lev 'level1
 
   'define 
wind=(ave(uwnd.1,lat='lat1',lat='lat2')+ave(uwnd10m,lat='lat1',lat='lat2'))/2'





For the first three files I opened (uwnd10m,vwnd10m,shum2m), the variables are 
uwnd,vwnd and shum respectively.  I define three new variables to store them as 
their varable name crash with the next three file I am going to open. I close 
the each file after I have defined the new variables (for the first three files)

For the next three files I opened,they have a different Grids as shown below.Is 
this the reason why I cannot run my script, or something else?
But what I want is to use the values from different files (those with different 
Grids to do my calculation)  How can I solve this? 


Can anyone give me some help? Thanks a lot (and sorry for the lengthy question)


File 1 : NCEP Reanalysis monthly ltm surface pressure
  Descriptor: /home2/h08hang/redata/pres.mon.mean.nc
  Binary: /home2/h08hang/redata/pres.mon.mean.nc
  Type = Gridded
  Xsize = 144  Ysize = 73  Zsize = 1  Tsize = 756  Esize = 1
  Number of Variables = 1
    pres 0 -103 Monthly Mean of Surface Pressure

File 2 : monthly mean u wind
  Descriptor: /home2/h08hang/redata/uwnd10m.mon.mean.nc
  Binary: /home2/h08hang/redata/uwnd10m.mon.mean.nc
  Type = Gridded
  Xsize = 192  Ysize = 94  Zsize = 1  Tsize = 756  Esize = 1
  Number of Variables = 1
    uwnd 0 -103 Monthly Mean of U-Wind

File 3 : monthly mean u wind
  Descriptor: /home2/h08hang/redata/vwnd10m.mon.mean.nc
  Binary: /home2/h08hang/redata/vwnd10m.mon.mean.nc
  Type = Gridded
  Xsize = 192  Ysize = 94  Zsize = 1  Tsize = 756  Esize = 1
  Number of Variables = 1
    vwnd 0 -103 Monthly Mean V wind at 10 m

File 4 : monthly mean u wind from the NCEP Reanalysis
  Descriptor: /home2/h08hang/redata/uwnd.mon.mean.nc
  Binary: /home2/h08hang/redata/uwnd.mon.mean.nc
  Type = Gridded
  Xsize = 144  Ysize = 73  Zsize = 17  Tsize = 751  Esize = 1
  Number of Variables = 1
    uwnd 17 -103 Monthly mean u wind

File 5 : monthly mean v wind from the NCEP Reanalysis
  Descriptor: /home2/h08hang/redata/vwnd.mon.mean.nc
  Binary: /home2/h08hang/redata/vwnd.mon.mean.nc
  Type = Gridded
  Xsize = 144  Ysize = 73  Zsize = 17  Tsize = 751  Esize = 1
  Number of Variables = 1
    vwnd 17 -103 Monthly mean v wind

File 6 : 4x daily NMC reanalysis
  Descriptor: /home2/h08hang/redata/shum.mon.mean.nc
  Binary: /home2/h08hang/redata/shum.mon.mean.nc
  Type = Gridded
  Xsize = 144  Ysize = 73  Zsize = 8  Tsize = 752  Esize = 1
  Number of Variables = 1
    shum 8 -103 Monthly Mean of Specific Humidity


Best,
Henry

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20110126/2033032f/attachment-0003.html