Using Fill function to shade between two data plots

I have a data set which I like to highlight the upper bound and lower bound of the curve. I tried with the following code and does it seem to work. In addition, I would like to change the x axis to a 5 minute time interval. Hope someone can help me. Thank you.

The code which I used

y = data(:,1);
y1 = y + 0.2 ;
y2 = y - 0.2;
time(:,1) = 0:3744;

plot(time,y1,':k', 'LineWidth',2)

hold on 
plot(time,y2,':k', 'LineWidth',2)
grid on
fill_between_lines = fill( [time fliplr(time)],  [y1 fliplr(y2)], 'b' );

Answer 1

[Star Strider]

If you want to fill the area between the plots, something like this (using the patch function) will work:

t = linspace(0, 12*pi, 250);                        % Create Data
s1 = sin(t)+2;                                      % Create Data
s2 = sin(t + pi/6);                                 % Create Data

figure(1)
patch([t fliplr(t)], [s1 fliplr(s2)], 'b')
grid

Without your data, this is as close as I can get.

Plotting your x-axis in 5-minute intervals could be as easy as simply re-scaling it by multiplying the x-axis vector by a constant (depending on what the current units are) to create the appropriate 'TickLabel' values.

[Wendy Lim]

I have tried with your recommendation but it doesn't seem to work. I have attached my data. What's the reason for not working the first round? Thank you!

[Star Strider]

My pleasure.

The data you posted in your plot image do not look anything at all like the data in the file you attached.

D = load('Wendy Lim data_field.txt');
t = 0:length(D)-1;

figure(1)
plot(t, D(:,1),    t, D(:,2))
grid

What do you want to do?