Project - Data Handling and Interpolation

at first load the data to matlab define the value to v and i define the value as given in the question .. this a 2D plot that only provide a missing value and given value to the in that graph..

[data]=xlsread('VI.xlsx');%read data from file

v=data(:,1);% v for column 1

i=data(:,2);%%i for column 2

x=-17.3:0.1:0.9;% start value and end value with a interval

y=interp1(v,i,x,'spline');%interpole function between v,i,x

plot(v,i,'*');%ploting between v,i

hold on;plot(x,y,'_');% hold on the graphand in that plot add x,y plotting

title('interpolation V vs I');%give title to that graph

xlabel('X');% name to x plane

ylabel('Y');% name to y plane

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]% take value from the graph

II=interp1(v,i,VV)%interpole between

z=[VV II];% get all value to z matrix

writematrix(z,'data.txt')% save file as data