matlab

majiancumt

function q=mmhole(x,y,z,xlim,ylim)
0 p$ _& p) Y( O6 M1 I+ M% v0 G3 w9 L%MMHOLE Create Hole in 3D Graphics Data
% Z=MMHOLE(X,Y,Z,Xlim,Ylim) sets the data in Z to NaN
% corresponding to the limits in Xlim=[Xmin Xmax] and
# f$ {: n* z" r( O9 A" Z% Ylim=[Ymin Ymax]. If Xlim or Ylim are empty they are
% assumed to be [-inf inf].
% X and Y can be plaid matrices, e.g., created by MESHGRID
, k( F* n. |! l# D4 K, z% or they can be vectors defining the x and y axes.
%
% Z=MMHOLE(Z,Clim,Rlim) creates the NaN hole based on the
/ X* H) w3 z/ P% column index limits in Clim and the row index limits in Rlim
* M& ]6 w& M: R; E%
% Resulting data can be plotted using mesh or surf:
% MESH(X,Y,Z) or SURF(X,Y,Z)
% This function automates the procedure described on
7 Z( Q3 C" l+ b" B  a1 b% page 249 of "Mastering MATLAB".
$ r+ @5 u5 h; y, s# Y
% D.C. Hanselman, University of Maine, Orono ME,  04469
% 9/26/95
% Copyright (c) 1996 by Prentice-Hall, Inc.
4 r% n/ w, \: D$ `/ Q
if nargin==3