Include occurrence frequency in Scatter plots

Objective of the question is -

• To include the occurence number in the scatter plot (image attached).
• I have reached up to a level but not able to think how to include the numbers and color shades in it. I am attaching the two variables (x and y) for the purpose of understanding.

I wish the final image to look as the image attached (objective_image.jpeg)

• numbers in each cell indicate the simultaneous occurrence of x and y axis

Kindly help.

Here in objective_image.jpeg the counts represents the simultaneous occurence frequency of x and y axis.

load swh_mwp_loc.mat
                                        % For scatter plot
                                        %%%%%%%%%%%%%%%%%%
                                        
AB =[swh_loc mwp_loc];
[uniqueAB, ~, n] = unique(AB, 'rows');% uniqueAB contains unique combination in which the AB can be grouped
                                      % n contains each row of AB belongs to which uniqueAB

nHist = hist(n, unique(n));           % nHist contains frequency of occurence each of the 90 uniqueAB 
scatter(uniqueAB(:, 2),uniqueAB(:, 1), 25,'filled');

                                       % for contour plotting
                                       %%%%%%%%%%%%%%%%%%%%%%%
                                       
hold on                               
x = mwp_loc(:,1) ; 
y = swh_loc(:,1) ; 
z = power_loc(:,1) ; 
nx = 1000 ; ny = 1000 ;
[X,Y] = meshgrid(linspace(min(x),max(x),nx),linspace(min(y),max(y),ny)) ;
%Z =griddata(x,y,z,X,Y) ;
Z = 0.549*X.*Y.*Y;
[M,c]=contour(X,Y,Z,'--') ;
set(c,'ShowText','on')
c.LineWidth = 1;                      % for result up to here image is attached (scatter_plus_contour.jpg)