2d plot:calculate the average value along one axle

Dears, I want to create a 2d plot that calculate the average value along one axle. There are is a pre-defined function in matlab? I add the scatter plot and the array

Answer 1

[Walter Roberson]

x = NEW_coo_y_cp(:,1);
y = NEW_coo_y_cp(:,2);
mx = mean(x);
my = mean(y);
scatter(x, y);
ax = gca;
xl = get(ax, 'XLim');
yl = get(ax, 'YLim');
line([mx, mx], yl, 'Color', 'g');
line(xl, [my my], 'Color', 'k');

[Stefht]

Not propertly; I want that for every x value matlab calculate the average on y axle, Look picture that I add: I want to create the red line averaged along x axle