Project - Data Handling and 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');