An example of "interp1" (Matlab code)

close all;home;clc;clear all;

for k=1:1:10;

x(k,1)=k;

y(k,1)=x(k,1)^2; %function here

m1(k,1)=y(k,1);

m1(k,2)=x(k,1);

end

figure (1)

plot(x,y,'linewidth',2)

xlabel('x')

ylabel('y')

figure (2)

plot(m1(:,1),m1(:,2),'square','linewidth',2)

hold on

yMax=max(y);

for k=1:1:yMax;

ty(k,1)=k;

tx(k,1)=interp1(y,x,k);

m2(k,1)=ty(k,1);

m2(k,2)=tx(k,1);

end

plot(m2(:,1),m2(:,2),'linewidth',2)

xlabel('y')

ylabel('x')

hold off