这个插值代码到底哪里错了嘛

gaoyuan_1993

A=load('频率.txt');
x=A(:,1);y = A(:,2);
1 c, o% E& D' h) C9 B8 Tz = A(:,3);
xlin = linspace(min(x),max(x),30);
ylin = linspace(min(y),max(y),30);
[X,Y] = meshgrid(xlin,ylin);
/ M. Z* y2 l9 P% q. eZ=griddata(x,y,z,xlin,ylin,'cubic');
% \3 v6 j) O# B* U: c4 ?( wmesh(X,Y,Z) %interpolated
4 d$ J8 v1 o2 \& M* A3 V' Vaxis tight; hold on
) }- l0 i7 H: E( l3 h& aplot3(x,y,z,'.','MarkerSize',15) %nonuniform

/ K, b- s. v* X: O* k' w) |* `( j4 }输入后会出现如下提示：
2 t. `  }2 e4 P9 i7 n4 M* W0 U* S! FError in ==> delaunayn at 81
2 W0 H1 G% _  s/ ~6 @- w* {" i3 zt = qhullmx(x', 'd ', opt);
Error in ==> griddata>cubic at 168
2 A) }! F! i) K) I    tri = delaunayn([x(:) y(:)]);
7 g% l, u  X& L" U% Z% aError in ==> griddata at 92
/ N: F; @5 N1 b    zi = cubic(x,y,z,xi,yi,opt);
8 X8 G) h9 C3 V8 N+ u2 h0 j% |( SError in ==> aa at 7
Z=griddata(x,y,z,xlin,ylin,'cubic');