> if i didn't know the variable name dimention but i want to reorder the variable dimention
> i try the codes :
> begin
> f = addfile(filepath,"r")
> var = f->varname
> dims = getvardims(var)
> var_reorder = dim_rmvmean_Wrap(dims(1)|:,dim(2)|:,dim(0)|:)
> end
>
> it has syntax error about the line " var_reorder = dim_rmvmean_Wrap(dims(1)|:,dim(2)|:,dim(0)|:) "
> how can i reorder the dimention without knowing the name dimention ?
You are using the correct function to retrieve the dimension
names of a variable.
http://www.ncl.ucar.edu/Document/Functions/Built-in/getvardims.shtml
However, there are two problems with what you have done:
[1] These are probably just errors for this example:
var_reorder = dim_rmvmean_Wrap(var(dims(1)|:,dim(2)|:,dim(0)|:))
^^^ ^^^ ^^^ ^
The 'dim' should be 'dims'.
[2] This is much more subtle. It involves using a
"variable string reference". This is accomplished by
enclosing a string with dollar sign ("$") syntax.
http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclVariables.shtml#FileStringRef
The example for getvardims will be improved to include this example.
var_reorder = dim_rmvmean_Wrap(var($dims(1)$|:,$dims(2)$|:,$dims(0)$|:))
------------
Note you could make this so it could work on 3- or 4-dimensional arrays
var = f->varname
dims = getvardims(var)
rank = dimsizes(dims)
if (rank.eq.3) then
var_reorder = dim_rmvmean_Wrap($dims(1)$|:,$dims(2)$|:,$dims(0)$|:)
end if
if (rank.eq.4) then
var_reorder = dim_rmvmean_Wrap($dims(1)$|:,$dims(2)$|:,$dims(3)$|:,$dims(0)$|:)
end if
-----------
D
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