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.

ans :-

code :-

data= readmatrix('VI.xlsx') %taken data from the xlsx sheet

v=data(:,1); %where v is the voltage

i=data(:,2); %where i is the current

x=-17.3:0.1:0.9;

y=interp1(v,i,x,'spline');

plot(v,i,'*r',x,y,'-y');

IV = [-17.2

-13

-11

-9

-6

-1

0.11

0.25

0.5

0.61

0.66]

II = interp1(v,i,IV)

z = [IV II]

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

%saving file in text file

fprintf(fileID,'%8s %13s\n','IV','II');

fclose(fileID);

output :-

NOTE :- TEXT FILE IS EMPTY , BUT IT IS verified BY TECHNICAL SUPPORT