Project - Data Handling and Interpolation

% Program for Interpolation of Voltage vs Current Data .

clc

clear all;

% excel file should be read

file=xlsread('VI.xlsx')

% data format is kept compact

format compact;

% First column is read

V=file(:,1)

% second column is read

I=file(:,2)

% point of interpolation

x=-17.3:0.1:0.9;

y=interp1(V,I,x,'spline');

subplot(211);

% plotting of curv voltage vs current

plot(V,I,'o',x,y)

grid on

% axis Notations

title('Voltage vs Current')

xlabel('voltage')

ylabel('current')

grid on

% Voltage Datafrom excel sheet , For calculating Current Values

%%

VV=[-17.2;

-17.1;

-13.8;

-13.5;

-13;

-12.5;

-11;

-9;

-5.76;

-6;

-1;

0.11;

0.25;

0.5;

0.61]

II=interp1(V,I,VV)

z=[VV II]

% txt file making for rquried volt and currents values .

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

fprintf(fileID,'%6s %12s\n','VV','II');

fprintf(fileID,'%6.2f%12.8f\n',z);

fclose(fileID);

Output :- As attached txt file Name :- 'VVII' and figure(Plot) of current_voltage_curv