% Example 10-5: Interpolating temperature data

t = [7 9 11 12];
Temp = [49 57 71 75];
plot(t, Temp, '-o')
xlabel('Time')
ylabel('Temperature (deg F)')
grid
hold on

% Use interp1 to find the missing temperatures
% with linear interpolation
t_missing = [8,10];
interp1(t, Temp, t_missing)
pause


% Try cubic spline interpolation
interp1(t, Temp, t_missing, 'spline')
pause

% Plot the splines
t_spline = [7:0.01:12];
Temp_spline = interp1(t, Temp, t_spline, 'spline');
plot(t_spline, Temp_spline, 'r--')
hold off