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copy_VarMeta

Copies all attributes, named dimensions and coordinate variables from one variable to another.

Prototype

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"

	procedure copy_VarMeta (
		var_from  ,    
		var_to         
	)

Arguments

var_from

An array of any dimensionality. Must have attributes, named dimensions and coordinate variables.

var_to

An array of any dimensionality. Its dimensions must be a subset of the leftmost dimensions of var_from. For example, if var_from is dimensioned time x lev x lat x lon, then var_to can be dimensioned:

  1. the same size
  2. time x lev x lat
  3. lev x lat
  4. lat

Description

This procedure copies all attributes, named dimensions and coordinate variables from var_from to var_to.

If var_from and var_to are not the same size, this procedure is "smart" enough to only calculate the appropriate number of dimensions possessed by var_to.

See Also

copy_VarMeta, copy_VarAtts, copy_VarCoords, copy_VarCoords_1, copy_VarCoords_2

There are many other metadata tools

Examples

Example 1

;---read in zonal winds
  a = addfile("$NCARG_ROOT/lib/ncarg/data/cdf/uv300.nc","r")
  u = a->U(1,:,:)
  v = a->V(1,:,:)

  spd = sqrt(u^2+v^2)    ; spd won't have any metadata
  copy_VarMeta(u,spd)    ; Copy metadata from u to spd