Project - Data Handling and Interpolation

Answer:

% Data handling and Interpolation
clear all;
clc;
Y=xlsread('VI.xlsx'); %Reading the data from excel file
V=Y(:,1); %voltage as a 1st column
I=Y(:,2); %current as a second column
Xq=(-17.3:0.1:0.9);
Yq=interp1(V,I,Xq,'spline'); %interpolate the data
figure(1);plot(V,I,'o',Xq,Yq,':.');grid; %plot the interpolated data
xlabel('V');ylabel('I(mA)');title('Interpolation');
%writing the interpolated data in the text file
fid=fopen('interp_data.txt','w');
for i=1:length(Yq)
fprintf(fid,'%d %d \n',Xq(i),Yq(i));
end
fclose(fid);

Data saved in the text file: