Project - Data Handling and Interpolation

Ans:

Here we have used the command 'interp1' for interpolation. The output xq1 is put to the text file called 'interpolation'.

Code for interpolation:

fileID = fopen('interpolation.txt','w');        % Open the text file to write the output

x = ImAmp;                                      % defining a variable x from excel file
y = VVolt;                                      % defining a variable y from excel file
xq = [-17.3:0.1:0.9];                           % defining the range for interpolation
xq1 = interp1(y,x,xq);                          % interpolation 
figure(1);
plot(x,y,'o',xq,xq1,':');                       % plotting the interpolation
grid;

fprintf(fileID,'%f','xq1');                     % print the output xq1 to the text file

Workspace:

Output:

Output in text file: