linterp1.m

可以方便的调用这个函数

%分段线性插值函数
function yi=linterp1(x,y,xi)
i=binSearch(x,xi);
L1=(x(i+1)-xi)/(x(i+1)-x(i));
L2=(xi-x(i))/(x(i+1)-x(i));
yi=y(i)*L1+y(i+1)*L2;