how to change color of dot in a 3D scatter plot?

I have done a scatter plot and when I select a point, I want that the color of this point takes another color. My function work in 2D but when I had a third dimension, it doesn't work.

function test()
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
%img = ones(300); % image to display
%h   = imshow(img,'Parent',gca);
%set(h,'ButtonDownFcn',{@ax_bdfcn});
fig = figure;
a = [1 2 3 4 5];
b = [2 3 4 5 6];
c = [2 2 3 3 3];
name = {'one', 'two', 'three', 'four', 'five'};
DCM_Data.Position = [a; b; c];
DCM_Data.Title = name;
scatter3(a, b, c,  'filled')
dcm_obj = datacursormode(fig);
set(dcm_obj,'UpdateFcn', {@myupdatefcn, DCM_Data});
end
function txt = myupdatefcn(empt,event_obj, DCM_Data)
pos = get(event_obj,'Position');
[dummy, index] = min(((pos(1) - DCM_Data.Position(1, :)).^2) + ...
                   ((pos(2) - DCM_Data.Position(2, :)).^2));
nameNumber = DCM_Data.Title{index};
txt = {nameNumber};
hold on
scatter3(pos(1), pos(2), pos(3), 'r', 'filled');
end

In 2D, scatter(pos(1), pos(2), 'r', 'filled'); change the color of the dot. In 3D nothing appends. Should I first try to remove the dot? how?

Thank you

Answer 1

[Christophe Nell]

I solved the problem by plotting the dot separately for x=1:1:size(a) dot(x) = scatter3(a(x), b(x), c(x)) end

In function myupdatefcn(empt,event_obj, DCM_Data): delete(dot(index))