Project - Data Handling and Interpolation

Project :

In a laboratory experiment, data of voltage and current has been recorded and the same is attached in an excel file ( Click on this link VI.xlsx ). Read the excel file in the Matlab program and perform the interpolation in the range of -17.3:0.1:0.9. Generate the interactive plot for the interpolated data and store them in a text file.

Key Highlights:

• Graphical solutions are more visual and appealing
• Interpolation of data
• Read excel file
• Write to text file

Deliverables:

• Find missing data and save it in text
• Interpolate the data set
• Save your program and attach the same. 
• Save txt file and upload in attachment

%use xlsread command input from spreadsheet
data = xlsread('VI.xlsx');
%input data from spreadsheet first column in spreadsheet
v=data(:,1);
%input data from second column in spreadsheet
I=data(:,2);
plot(v,I,'.-b')
xlabel('voltage')
ylabel('current')
title('Generated value using interpolated')
%We set limit of x from -17.3 to 0.9
x=-17.3:0.1:0.9;
y=interp1(v,I,x);
hold on; grid on;
% Generated the interpolated data for plot.
plot(v,I,'-r',x,y)
%y is using v,I relationship generated value and save in text file.
writematrix (y,'file_1','Delimiter','tab')
% v is voltage and save in text file.
writematrix (v,'file_2')
%I is current and save in text file.
writematrix (I,'file_3')