MATLAB: How to take a difference within the data of the same city but not across the city, Part 2

Question

Suppose I have table T

City Date Cumulative_Visitors
-----------------------
NY January 1 100
NY January 2  150
NY January 3  200
SF January 1 70
SF January 2 200
SF January 3 400

In Part 1, I learned to create a 2*1 cell U where the first cell is the data of new_visitors for NY and the second cell is the data of new_visitors for SF. How can one merge T and U?

Answer 1

Same answer as this: https://www.mathworks.com/matlabcentral/answers/685423-how-to-take-a-difference-within-the-data-of-the-same-city-but-not-across-the-city