[MATLAB数学相关] 请教关于二维插值interp2的问题 - MATLAB爱好者论坛-LabFans.com

76587658 · 2010-10-17, 15:32

老师让用二维插值函数做一问题，但interp2函数总是出错，请高手指点
程序如下
x=[77,81,88,103.5,105.5,107.5,117.5,129,140,157.5,162,162,185.5,195];
y=[-81,-66.5,-33.5,-6.5,3,7.5,22.5,23,56.5,84,85.5,137.5,141.5,147];
z=[4,4,6,6,8,8,8,8,8,8,9,9,9,9];
[XI,YI]=meshgrid(-100:.1:200,-100:.1:200);
ZI=interp2(x,y,z,XI,YI);mesh(XI,YI,ZI)
然后matlab提示??? Error using ==> interp2 at 180
X and Y must be monotonic vectors or matrices produced by MESHGRID.

请问如何修改，到底错在哪了，请给出具体该法，谢谢了，都纠结一晚了

2010-10-17, 15:32	#1
76587658 初级会员注册日期: 2010-10-17 年龄: 34 帖子: 1 声望力: 0	请教关于二维插值interp2的问题老师让用二维插值函数做一问题，但interp2函数总是出错，请高手指点程序如下 x=[77,81,88,103.5,105.5,107.5,117.5,129,140,157.5,162,162,185.5,195]; y=[-81,-66.5,-33.5,-6.5,3,7.5,22.5,23,56.5,84,85.5,137.5,141.5,147]; z=[4,4,6,6,8,8,8,8,8,8,9,9,9,9]; [XI,YI]=meshgrid(-100:.1:200,-100:.1:200); ZI=interp2(x,y,z,XI,YI);mesh(XI,YI,ZI) 然后matlab提示??? Error using ==> interp2 at 180 X and Y must be monotonic vectors or matrices produced by MESHGRID. 请问如何修改，到底错在哪了，请给出具体该法，谢谢了，都纠结一晚了