scatter plot on top of surface has garbled points

I have the following code that overlays a scatter plot on a surface.

Notice that some of the rounded points are chopped off.

figure
scatter(rand(20,1)*10,...
        rand(20,1)*20,...
        'o', 'LineWidth',5, ...
        'MarkerFaceColor', 'black', ...
        'MarkerEdgeColor', 'black')
hold on
[X,Y] = meshgrid(1:0.5:10,1:20);
Z = sin(X) + cos(Y);
surf(X,Y,Z)
view(2)
axis equal square;

Here is the output:

Answer 1

[Ameer Hamza]

You are using surf(), which plots a 3D surface. scatter() draws points at z=0, so if the surface lies above, or intersect the point, it becomes invisible or partially visible. Since you are using view(2), so there is no need to create a 3D surface. You can get same visual using pcolor

figure
hold on
[X,Y] = meshgrid(1:0.5:10,1:20);
Z = sin(X) + cos(Y);
pcolor(X,Y,Z)
view(2)
scatter(rand(20,1)*10,...
        rand(20,1)*20,...
        'o', 'LineWidth',5, ...
        'MarkerFaceColor', 'black', ...
        'MarkerEdgeColor', 'black')
axis equal square;

[mkarikom]

perfect, thank you

[Ameer Hamza]

I am glad to be of help.