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# divergence

Compute divergence of vector field

## Syntax

div = divergence(X,Y,Z,U,V,W)
div = divergence(U,V,W)
div = divergence(X,Y,U,V)
div = divergence(U,V)

## Description

div = divergence(X,Y,Z,U,V,W) computes the divergence of a 3-D vector field U, V, W.

The arrays X, Y, and Z, which define the coordinates for U, V, and W, must be monotonic, but do not need to be uniformly spaced. X, Y, and Z must have the same number of elements, as if produced by meshgrid.

div = divergence(U,V,W) assumes X, Y, and Z are determined by the expression

[X Y Z] = meshgrid(1:n,1:m,1:p)

where [m,n,p] = size(U).

div = divergence(X,Y,U,V) computes the divergence of a 2-D vector field U, V.

The arrays X and Y, which define the coordinates for U and V, must be monotonic, but do not need to be uniformly spaced. X and Y must have the same number of elements, as if produced by meshgrid.

div = divergence(U,V) assumes X and Y are determined by the expression

[X Y] = meshgrid(1:n,1:m)

where [m,n] = size(U).

## Examples

This example displays the divergence of vector volume data as slice planes, using color to indicate divergence.