Project - Data Handling and Interpolation

                                                                         *MATLAB CODE*

% specify the excel file name

filename='VI.xls';

xlrange='A2:B25';   

sheet=1;

% read the data from Excel

VI= xlsread('/Users/akshayashokgaikwad/Downloads/VI.xlsx',sheet,'A2:B25');

disp(VI);   

% Extract the voltage and current data

V=VI(:,1);

I=VI(:,2);

�fine the interpolation range

x_interp= -17.3:0.1:0.9;

% perform the interpolation

y_interp=interp1(V,I,x_interp,'spline');

% by using plot function generate Interactive plot 

plot(V,I,'bo',x_interp,y_interp,'r','linewidth',2);

xlabel('Voltage (V)'); 

ylabel('Current (I)');

title('VI Characteristics,Interpolated Curve');

legend('data','interpoleted Data');

grid on;

% save the interpoleted data to a txt file using fprintf function 

fileID=fopen('interpolation.txt','w');

for i=1:length(x_interp)

    fprintf(fileID,'%0.2f\t%0.2f\n',x_interp(i),y_interp(i));

end

fclose(fileID);

                                                                            *RESULT*

• plot shows VI Characteristics,interpolted curve
• Blue dot data shows original from VI.xlsx file 
• Red line is the interpolated data

                                                                      *CONCLUSION*

• the above file interpolated.m has been attached 
• the above txt file interpolated.txt has been attached