Would something like this work?
n = 30; % number of data points
cmap = jet(n); % builtin colormap; could choose another...
C = mat2cell(cmap, ones(1, size(cmap, 1)), 3); % reshape for 'set'
% dummy data
k = [1:n].';
t = (k - 1)/n;
r = (t - 1).*cos(2*pi*2*sqrt(t));
%
x = 10*((1 + r)/2);
y = x;
z = t;
%figure('WindowStyle', 'docked');
%surf([x, x], [y, y], [z - eps, z + eps], 'EdgeColor', 'interp');
% plot numerical data
hf = figure('WindowStyle', 'docked');
ha = axes;
axis(ha, [0, 10, 0, 10]);
ht = text(x, y, num2str(k));
set(ht, {'Color'}, C)
set(ht, 'FontWeight', 'bold');
colormap(cmap);
colorbar;
Note: using the 'set' command with cell arrays can be a little cumbersome (in my opinion), as there seem to be a number of gotchas; you could just as easily loop through ht:
for ind = 1:n
set(ht(ind), 'Color', cmap(ind, :));
end
Let me know if this works for you.
--Andy
