How do I get rid of the horizontal line on the y-axis in a line plot? Please see attached image below as an example. I want the horizontal line hidden.

[Kevin Holly]

Is this a figure? If so could you attach it?

[Mangesh KAle]

[John D'Errico]

Are you saying this is a picture of a plot, and you want to remove the red line? Maybe a jpeg image? Then just find the red pixels, and turn them white. You will still have an artifact there. So you could be more creative, and use the average of the neighboring pixels to determine the color, so effectively a simple inpainting.

If it is a MATLAB figure, then all you need do is not plot the red line. Or, you could find the handle to that graphics object, and delete it.

So what is the problem you are trying to solve? You have not given us enough information to know yet.

[Dyuman Joshi]

There might be a repetition in the data that causes this line.

Are the first and the last values same? If yes, remove the last data.

Otherwise, refer to Star Strider's answer

[Mangesh KAle]

Size of the variable is:

t1=1*962560 and x1 = 962560*2

clc;

close all;

% Read all data

[x1,fs1]=audioread('Aniruddha heart beat.wav');

t1 = (0:length(x1)-1)/fs1;

figure(1)

subplot(221)

plot(t1,y)

xlabel('time')

ylabel('x[n]')

title('Heart rate Bodytune device')

grid on

Answer 1

[Star Strider]

Since:

[x1,fs1]=audioread('Aniruddha heart beat.wav');

and

x1 = 962560*2

the red line is likely the second channel in ‘x1’ so:

y = x1(:,1);

plot(t1,y)

might be the solution.

.