matlab

majiancumt

function q=mmhole(x,y,z,xlim,ylim)
%MMHOLE Create Hole in 3D Graphics Data
5 A% M# R* F5 T& U( f4 O: T( W% Z=MMHOLE(X,Y,Z,Xlim,Ylim) sets the data in Z to NaN
% corresponding to the limits in Xlim=[Xmin Xmax] and
" y" q- d6 b6 r3 s  i2 \( ~5 |# C% Ylim=[Ymin Ymax]. If Xlim or Ylim are empty they are
/ D6 F% y; s2 c6 z% assumed to be [-inf inf].
% X and Y can be plaid matrices, e.g., created by MESHGRID
% or they can be vectors defining the x and y axes.
%
% Z=MMHOLE(Z,Clim,Rlim) creates the NaN hole based on the
% column index limits in Clim and the row index limits in Rlim
% v9 O# I9 D( Q2 z! i2 V%
' D' |- i' R7 Q: F& d5 i# T, y; N% Resulting data can be plotted using mesh or surf:
5 ^' b: Y' x/ \* u0 W) p% MESH(X,Y,Z) or SURF(X,Y,Z)
* O" Y# e2 r, Q* X% This function automates the procedure described on
% page 249 of "Mastering MATLAB".
. k' q0 J% U3 D: P7 z, Z( J
% D.C. Hanselman, University of Maine, Orono ME,  04469
8 N$ H6 o7 n6 a% 9/26/95
' ^  m1 v& Z' e( ]% Copyright (c) 1996 by Prentice-Hall, Inc.

if nargin==3