use clean signal to label in matlab

To label a clean signal in Matlab, you can use the following steps:

1. Load the clean signal data into Matlab.

main.m
clean_signal = load('clean_signal.mat'); 
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2. Plot the clean signal to visualize it and identify the points where you want to label it. You can use the plot function to plot the signal:

main.m
plot(clean_signal); 
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3. Use the ginput function to select the points where you want to label the signal. This will allow you to click on the plot to select points interactively. You can store the selected points in a variable:

main.m
 label_points = ginput(num_labels); % num_labels is the number of labels you want to add
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4. Convert the selected label points to indices on the time axis:

main.m
label_indices = round(label_points(:,1)); % assuming time is in the first column of clean_signal
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5. Create a cell array to store the label text for each point:

main.m
label_text = cell(num_labels, 1);
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6. Use a loop to prompt the user to enter label text for each point, and store the text in the label_text array:

main.m
for i = 1:num_labels
    label_text{i} = inputdlg(sprintf('Enter label text for point %d:', i));
end
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7. Use the text function to plot the label text at the selected points:

main.m
for i = 1:num_labels
    text(label_indices(i), clean_signal(label_indices(i)), label_text{i});
end
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8. Optionally, you can save the labelled signal as a new variable or plot it for visual inspection:

main.m
plot(1:length(clean_signal), clean_signal);
hold on;
for i = 1:num_labels
    text(label_indices(i), clean_signal(label_indices(i)), label_text{i});
end
hold off;
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