Project - Data Handling and Interpolation

p=readtable('VI.xlsx');%Read excel file

data=p.Variables;% extract data excel file

v=data(:,1);%extract V_Volt_ data from excel file

i=data(:,2);%extract I_mAmp_ data from excel file

v1= (-17.3:0.1:0.9);%interpolation range

i1=interp1(v,i,v1);%interpolation method 1

i2=interp1(v,i,v1,'spline');%interpolation method 2

figure(1);%open figure

plot(v,i,'b',v1,i1,'o')%normal plot vs interpolation method 1

grid

title('linear interpolation')%plot titel

figure(2);%open figure

plot(v,i,'b',v1,i2,'g--')%normal plot vs interpolation method 2

grid

title('spline interpolation')%plot titel

%session for wirte missing data in missing_data.txt file

filename=fopen('missing_data.txt','w'); %open text file name missing _ata.txt 'w' specifies providing write access

fprintf(filename,'%d \n',i1); %formats data and displays the results of missing_data.txt file on the screen

%(%d for specify data type and \d for space betwin data)

fclose(filename); %closes an open file missing_data.txt