Mean and Root Mean Square plot

I wrote the following code. I have one question regarding mean and SMS. Since the Disp_Data is a vecotor, how can I write the code to make sure the mean and RMS result come as a vector as well for plotting.

Time = 0:0.001:5;
T = Time(2)-Time(1);             % Sampling period
Fs = 1/T;                        % Sampling frequency
L = size(Time,2);                % Length of signal

Disp_Data = 5*(sin(10*2*pi*Time)+0.1*((rand(1,L)-0.5)*2));
M_data = mean(Disp_Data);
RMS_data = RMS (Disp_Data)

Answer 1

[Star Strider]

Try this:

Time = 0:0.001:5;
T = Time(2)-Time(1);             % Sampling period
Fs = 1/T;                        % Sampling frequency
L = numel(Time);                 % Length of signal
Disp_Data = 5*(sin(10*2*pi*Time)+0.1*((rand(1,L)-0.5)*2));
M_data = mean(Disp_Data);
RMS_data = rms(Disp_Data);

figure
plot(Time, Disp_Data)
hold on
plot(xlim, [1 1]*M_data, 'LineWidth',1.5)
plot(xlim, [1 1]*RMS_data, 'LineWidth',1.5)
hold off
grid
xlabel('Time')
ylabel('Amplitude')
legend('Signal', 'Signal Mean', 'Signal RMS')

Note that the mean and RMS values are the same for the entire signal.

[Image Analyst]

Right, so I was wondering why Fred thinks that they should be vectors.

Note: with later versions you can use xline() and yline() to draw vertical or horizontal lines.

[Star Strider]

Fred Mahoney wants to plot them, and needs a way to do that. The plot function only plots vectors (unless markers are used to plot single points).

My code creates the necessary 2-element vectors that plot wants, and plots them.

[Fred Mahoney]

Thank you both. I appreciate it

[Star Strider]

As always, my pleasure!

[OGUNGBEMI Ezekiel]

Hi, I tried using the RMS @ Star strider provided but the error am getting is ' undefined Function or Variable * nume1*'

L = nume1(Time):

Thanks in anticipation.

[Star Strider]

l ~= 1