matlab

majiancumt

function q=mmhole(x,y,z,xlim,ylim)
* f! X; y4 }/ y8 }% A- }2 v%MMHOLE Create Hole in 3D Graphics Data
4 K0 T; Y, ]3 o% Z=MMHOLE(X,Y,Z,Xlim,Ylim) sets the data in Z to NaN
% corresponding to the limits in Xlim=[Xmin Xmax] and
* G; v! r! \" J7 ]1 l% Ylim=[Ymin Ymax]. If Xlim or Ylim are empty they are
% assumed to be [-inf inf].
" k6 M- i2 T+ R! F% X and Y can be plaid matrices, e.g., created by MESHGRID
% or they can be vectors defining the x and y axes.
* X- v/ o! W" N$ f' d5 Z%
) \3 B) {- m- U; A6 Y4 w' G% Z=MMHOLE(Z,Clim,Rlim) creates the NaN hole based on the
5 B0 k  m5 I: ^& O2 t' S# }3 H% column index limits in Clim and the row index limits in Rlim
" R( q6 p& ~$ y- j' U* q8 t%
; x. c' t" q/ r& r/ c' M% Resulting data can be plotted using mesh or surf:
8 @; Q% J7 Q* O: v% MESH(X,Y,Z) or SURF(X,Y,Z)
+ e. F+ Q% f* w* ^* c. l% This function automates the procedure described on
% page 249 of "Mastering MATLAB".
6 o0 b: y( F; k' v' N2 ^
% D.C. Hanselman, University of Maine, Orono ME,  04469
% 9/26/95
% Copyright (c) 1996 by Prentice-Hall, Inc.
( ~8 H6 H. ?3 a( ?
! Q9 G4 X  @+ l! Q. Qif nargin==3