How to add a value of a point on y axis in a PLOT ?

For example many points and I want to display them in a Plot.

I want to appear the value of point on y axis, for example:

the point ( 4, 2.5), I want to display the 2.5 on the Y axis and a small line between the point and its Y value

Answer 1

[Star Strider]

Possibly —

point = [4, 2.5];

figure
plot(point(1), point(2), 'or', 'MarkerFaceColor','r')
axis([0 5  0 5])
hold on
plot([1 1]*point(1), [min(ylim) point(2)], ':r')                % Vertical Line
plot([min(xlim) point(1)],[1 1]*point(2),  ':r')                % Horizontal Line
hold off
grid
text(point(1), point(2), sprintf('(%.1f,%.1f)',point), 'Horiz','left', 'Vert','bottom')

.

[Rahim Rahim]

Thank you for your help but I want to appear the value on Y-axis

[Star Strider]

point = [4, 2.5];

figure
plot(point(1), point(2), 'or', 'MarkerFaceColor','r')
axis([0 5  0 5])
hold on
plot([1 1]*point(1), [min(ylim) point(2)], ':r')                % Vertical Line
plot([min(xlim) point(1)],[1 1]*point(2),  ':r')                % Horizontal Line
hold off
grid
text(point(1), point(2), sprintf('(%.1f,%.1f)',point), 'Horiz','left', 'Vert','bottom')
text(-0.08, 2.5, '2.5', 'Color','r', 'Horiz','right')

The only option appeaars to be to manually overwrite it. The properties that I can find do not allow changing properties for a specific tick label, such as color or anything else.

.