Making a plot to find out when, during a 24 hour period, two rows in excel has the same value.

Hello

I have two rows of data in excel that was recorded on two seperate days with a sample time of 6 seconds, as seen in the image below. I was wondering if there's a way to plot a graph in matlab, with 24 hours and sample time of 6 seconds on the x-axis, so that I can see when the data from the two days intersects and have the same value.

Answer 1

[Bob Thompson]

Do you specifically need to plot the results? Why not just use logic indexing?

t = data(:,ismember(data(:,2:3,1),data(:,2:3,2)),1); % Note that I assumed your
                                                     % data was put in a 3D array
                                                     % called 'data' which 
                                                     % contains your image as the
                                                     % first
                                                     % and second dimensions,
                                                     % with each day as the third
                                                     % dimension. 
                                                     % Modify as needed.