c1_1_1.m

来自「该文件主要包括了matlab的一些主要应用例程!对学习matlab很有帮助」· M 代码 · 共 11 行

%filename c1_1_1.m
x=[0:0.5*pi:2*pi  2*pi+0.6*pi:0.4*pi:4*pi];
y=sin(x);xi=0:0.05*pi:4*pi;
y_nearest=interp1(x,y,xi,'nearest');
y_linear=interp1(x,y,xi);
y_spline=interp1(x,y,xi,'spline');
y_cubic=interp1(x,y,xi,'cubic');
plot(x,y,'o',xi,y_nearest,'-.',xi,y_linear,'k--',xi,y_spline,'k:',xi,y_cubic,'k-');
xlabel('x');ylabel('y');
legend('original data','nearest','linear','spline','cubic')