Project - Data Handling and Interpolation

data = xlsread("VI.xlsx"); %reading the saved excel file

Volt = data(:,1); %declaring voltage

Amp = data(:,2); %declaring the current

n = [-17.3:0.1:0.9]; %interpolation range

inter = interp1(Volt, Amp, n); %interpolation

plot(Volt,Amp,'o',n,inter,'b-'); % ploting graph of voltage vs temperature

grid;

title('interpolated data');

ylabel('voltage');

xlabel('current');

VV = [-17.2; -17.1; -13.8; -13.5; -13.0; -12.5; -11; -9; -5.76; -6; -1; 0.11; 0.25; 0.5; 0.61];

p = Volt/Amp; %eqating resistance

q = p(:,1); %to store resistance

r = VV/q;

Amp2 = r(:,1); %equating current

fileX = fopen('Voltamp.txt','w'); %storing current

fprintf(fileX, 'Voltage \n'); %creating .txt file

fprintf(fileX, '%f \n',VV); %writing the txt file

fprintf(fileX, '\n Current \n');

fprintf(fileX, '%f \n',Amp2);

fclose(fileX); %closing the .txt file