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.

num = xlsread('C:\Users\parthibane94\Downloads\parthiban\VI.xlsx');

x=voltage;

v=current;

f=griddedInterpolant(x,v);

xq=-17.3:0.1:0.9;

vq=f(xq);

plot(x,v,'ro')

hold on

plot(xq,vq,'.')

legend('sample points','interpolated points')

xlabel('voltage-V')

ylabel('current-I')

title('Data-Interpolation')

file_ID=fopen('vq.txt','w');

fprintf(file_ID,'%d\n',vq);

file_ID=fopen('xq.txt','w');

fprintf(file_ID,'%d\n',xq);

file_ID=fopen('f.txt','w');

fprintf(file_ID,'%d\n',f);