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);
: x2 w- K' Y) J5 L  w; rz = A(:,3);
xlin = linspace(min(x),max(x),30);
2 E0 X  p/ W0 ]0 K7 d/ i# Lylin = linspace(min(y),max(y),30);
[X,Y] = meshgrid(xlin,ylin);
& }, [' g1 }, iZ=griddata(x,y,z,xlin,ylin,'cubic');
mesh(X,Y,Z) %interpolated
axis tight; hold on
+ X* i' b2 S3 B* rplot3(x,y,z,'.','MarkerSize',15) %nonuniform

输入后会出现如下提示：
! j( `% n) ^' M  `; p' d! EError in ==> delaunayn at 81
t = qhullmx(x', 'd ', opt);
# s. Y/ h$ O, j9 j8 v2 ~Error in ==> griddata>cubic at 168
) W# B  Z+ G/ {    tri = delaunayn([x(:) y(:)]);
6 `6 |. h1 b1 h( }8 u4 f, oError in ==> griddata at 92
; J: f* f; j8 I. |- q; c    zi = cubic(x,y,z,xi,yi,opt);
Error in ==> aa at 7
# E2 t9 n3 x- K# c, n. U5 DZ=griddata(x,y,z,xlin,ylin,'cubic');
! ?) d! s5 M% K. P4 F