Project - Data Handling and Interpolation

%% interactive plot for interpolated data

%reading data from exel sheet

a = xlsread("C:\Users\okdar\OneDrive\Documents\MATLAB\Examples\R2022a\matlab\CompareLinsolveAndBackslashExample\VI.xlsx");

volts = a(:,1);%seperating volts and amps into separate vectors

amps = a(:,2);

plot(volts,amps,'b-o','linewidth',2);

hold on;grid on;

x = -17.3:0.1:0.9;

%we can use spline as well as pchip I want a smooth curve so I used spline

y = spline(volts,amps,x);

plot(x,y,'m--*');

xlabel('volts');ylabel('amps');

legend('-o normal volts vs amps','--* interpolated volts vs amps');

z = [x,y];

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

fprintf(fileID,'%6s %12s\n','x','y');

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

fclose(fileID);