Name

---

  MGH_PERIM

Purpose

---

  For a 2D rectilinear or curvilinear grid, return the perimeter
  locations

Calling Sequence

---

  result = mgh_perim(x, y)

Positional Parameters

---

  x, y (input, numeric 1D or 2D array)
    X, Y positions of the grid nodes in either of the forms commonly
    use for 2D grids: 1D arrays dimensioned [m] and [n] for
    a rectilinear grid or 2D arrays both dimensioned [m,n] for a
    curvilinear grid.

Return Value

---

  The function returns the perimeter locations in a [2,n] array.
###########################################################################
  Copyright (c) 2000-2014 NIWA:
  http://www.niwa.co.nz/
  Licensed under the MIT open source license:
  http://www.opensource.org/licenses/mit-license.php
###########################################################################

Modification History

---

  Mark Hadfield, 2009-09:
    Written.