Project - Data Handling and Interpolation

AIM:

In a laboratory experiment, data of voltage and current has been recorded and the same is attached in an excel file ( Click on this link VI.xlsx ). Read the excel file in the Matlab program and perform the interpolation in the range of -17.3:0.1:0.9. Generate the interactive plot for the interpolated data and store them in a text file.

Answer:

VV =[-17.3 -17.1 -13.8 -13.5 -13.0 -12.5 -11 -9 -5.76 -6 -1 0.11 0.25 0.5 0.61]’

> plot(V,I,'-ob','MarkerFacecolor','r','linewidth',3);
VV = interpl(V,I);
V=-17.3:0.1:0.9;
xlabel('voltage');
ylabel('current');

>> fileidl=fopen("C:\Users\ponnu\Downloads\VI.xlsx",'r')
fileid=fopen('C:\users\ponnu\Documents\Matlab basics\project.txt','w')
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];
VVolt=-17.3:0.1:0.9;
c=interpl(VV,VVolt);
fprintf(fileid,'%d',VV)
figure
plot((-28:-14),VV,'o',VVolt,c,'*');
ylabel('voltage');
xlabel('current');
legend('VV','c');