Project - Data Handling and Interpolation
Iinp = interp1(V,I,Vinp,"spline");% Using 'interp1' function for calculating Current value for given %Voltage Range 'Vinp'
figure(1);
subplot(121)
plot(V,I,'-o');grid;% Ploting trig_function with time
title('Experiment Data');%giving title for the figure
ylabel('I(mAmp)');xlabel('V(Volt)');%giving lables to both the axis
axis([-20 5 -30 5]);%Defining axis limits
subplot(122)
plot(Vinp,Iinp);grid;% Ploting trig_function with time
title('Calculated By Interpolation Data');%giving title for the figure
ylabel('I(mAmp)');xlabel('V(Volt)');%giving lables to both the axis
axis([-20 5 -30 5]);%Defining axis limits
figure(2);
plot(V,I,'o',Vinp,Iinp);grid;%ploting the values
title('Volteg(V) vs Current(I) Validation plot');%giving title for the figure
xlabel('V(Volt)');ylabel('I(mAmp)');%labeling X and Y axis
legend('Experiment Data','Calculated by Interpolation','Location','best');% Showing legends
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];% Given Voltage Data IN %problem
VI = interp1(V,I,VV,"spline");% Using 'interp1' function for calculating Current value for given Voltage
figure(3);
plot(VV,VI,'-o');grid;%ploting the values
title('Calculated Value Of I(mAmp) Vs Given data of V(Volt)');%giving title for the figure
xlabel('V(Volt)');ylabel('I(mAmp)');%labeling X and Y axis
fid = fopen('Volt_and_Current.txt','w');% opening output file
fprintf(fid,'V(Volt) I(mAmp)n');% storing value of variable x in file
for i = 1:length(VV)
fprintf(fid,'%.3f %.3fn',VV(i),VI(i));% storing value of variable x in file
end
fclose(fid);% closing output file
Result :
Result for Additional Data :
Calculated and ploted
| V (Volt) | I (mAmp) |
| -17.3 | -28 |
| -17.1 | -24 |
| -17 | -19 |
| -16.8 | -14 |
| -16.5 | -9 |
| -16 | -6 |
| -15 | -4 |
| -14 | -3 |
| -12 | -2 |
| -10 | -1.3 |
| -8 | -1 |
| -5 | -0.6 |
| -2 | -0.3 |
| -0.2 | -0.1 |
| 0.09 | 0 |
| 0.19 | 0 |
| 0.27 | 0 |
| 0.39 | 0.01 |
| 0.43 | 0.03 |
| 0.5 | 0.17 |
| 0.55 | 0.42 |
| 0.6 | 1.23 |
| 0.62 | 1.99 |
| 0.65 | 3.91 |