dim_avg

For each index of dimensions 0..n-2, this function computes the average of the n-1 dimension

Synopsis

	function dim_avg(
		x : numeric
	)

Arguments

x
An array of one or more numeric values of any dimensionality

Description

The dim_avg function computes the average of all elements of the n-1 dimension for each index of the dimensions 0..n-2. dim_avg ignores missing values (x@_FillValue). The output dimensionality is the same as the first n-2 dimensions of the input.

Example

The following is a simplistic example that demonstrates how dim_avg works. Try running this example and print out the values to get a better idea of how dim_avg works. 
begin
;
; 	Create example array
;
	a = onedtond(ispan(1,150,1),(/3,5,10/))
;
; 	Assign dimension names
;
	a!0 = "time"
	a!1 = "latitude"
	a!2 = "longitude"
;
;  	Compute average of dimension longitude  at all time and latitude points
;
 	pxy = dim_avg(a)
;
;       Compute average of dimension time  at all points latitude and longitude points
;	The following uses Named Subscripting to reorder the input array
;	such that time is the n-1 dimension.
;
	pyz = dim_avg( a(latitude | :, longitude | : , time | :) )

end

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$Revision: 1.5 $ $Date: 1999/03/15 16:59:47 $