Creating a plotting Threshold across multiple variables

Hello again!

Today I am trying to add a second layer to an exisiting plot by using a threshold for when the distance from the median deviates +/- 5 mm. I am not sure using logical operators is helpful or just confusing me more.

I have attached my code below. The issue I am having is retaining the original matrix column and carrying the values over into a new matrix when I get a logical 1. I cannot figure out how to turn my logical array back into a matrix with the appropriate/orignal numbers in the correct placement with respect to the original matrix column.

I apologize if my description is confusing. I will be actively viewing if any one has any questions. I feel like I am on the right idea but still not sure if this actually makes sense from a programming stand point.

Thank you for your time and help.

%% 3) Adding multiple lines to a plot

% - Color the part of the line from the previous plot where the CoP deviates more than 5mm away from

% the center on the x axis or more than 5mm away from the center on the y axis in red.

% Do this by plotting a second line on top of the line from question number 2.

Mx = median(COPD_data.AnteriorPosteriorSway_mm_) %median(Sortx)

My = median(COPD_data.MedioLateralSway_mm_) %median(Sorty)

Basex_plus = Mx+5 %mm

Basex_minus = Mx-5

Basey_plus = My+5 %mm

Basey_minus = My-5

Adjust_AP = (COPD_data.AnteriorPosteriorSway_mm_ >= Basex_minus &...

COPD_data.AnteriorPosteriorSway_mm_ >= Basex_plus)

Adjust_ML = (COPD_data.MedioLateralSway_mm_>= Basey_minus &...

COPD_data.MedioLateralSway_mm_>= Basey_plus)

%Dev_AP(Adjust_AP)

plot (Adjust_AP, Adjust_ML, 'r--')

hold off