Question

如何用matlab实现一维插值

Answer 1

a=[5.91 5.93 5.94 5.96 5.98];
b=[0.32 0.36 0.23 0.25 0.46];
c=interp1(a,b,5.92)

结果：
c =
0.3400

当然，默认是线性插值，你可以加一个参数来改变插值方式：
c2=interp1(a,b,5.92,'spline') %样条插值

下面是所有可选的：
'nearest' Nearest neighbor interpolation
'linear' Linear interpolation (default)
'spline' Cubic spline interpolation
'pchip' Piecewise cubic Hermite interpolation
'cubic' (Same as 'pchip')