Project - Data Handling and Interpolation
A=xlsread('VI.xlsx');
x =A(:,1);
y =A(:,2);
plot(x,y,'LineWidth',1.5)
xnew=linspace (max(x),min(x),500);
%%% interp1(x,y,xq,method)
ynew=interp1(x,y,xnew,'spline');
hold all
plot(xnew,ynew,'LineWidth',4);
legend('data','interpolation-spline');