这个插值代码到底哪里错了嘛

gaoyuan_1993

A=load('频率.txt');
+ |% A7 E+ ^, G3 ex=A(:,1);y = A(:,2);
: e* H" S) K" p8 t: M9 oz = A(:,3);
xlin = linspace(min(x),max(x),30);
9 g' j' X# o6 d9 ]3 kylin = linspace(min(y),max(y),30);
  d5 ~# l$ J* p& \[X,Y] = meshgrid(xlin,ylin);
& x, k; u' B6 ?( R1 fZ=griddata(x,y,z,xlin,ylin,'cubic');
& b0 M! ^1 g! Tmesh(X,Y,Z) %interpolated
axis tight; hold on
4 n) v' q! `' x: Yplot3(x,y,z,'.','MarkerSize',15) %nonuniform
9 C) y6 ]! m5 Q% W5 ?  Y9 V/ ^+ F
' Z7 B6 L) ^4 D5 I5 |# w; Y+ v0 m输入后会出现如下提示：
5 g8 a3 E/ ], c' t5 P. T; BError in ==> delaunayn at 81
t = qhullmx(x', 'd ', opt);
; K! Z- C$ H; g' D, M3 e9 mError in ==> griddata>cubic at 168
: a: r2 M- A, _; E: G9 x% u    tri = delaunayn([x(:) y(:)]);
Error in ==> griddata at 92
5 n. w& D. S; |( S    zi = cubic(x,y,z,xi,yi,opt);
Error in ==> aa at 7
Z=griddata(x,y,z,xlin,ylin,'cubic');
: U5 n5 `- b4 _& ]2 v) ]. f