MATLAB: How to view the values of points on a plot

Question

I am plotting a circle based on list of x and y co-ordinates in a .txt as input.How can I view the points on the circle once it is plotted?

Answer 1

Suchita - you could can enable the data cursor mode on the figure. For example, suppose we plot the sine wave as follows

 close all;
 x=-2*pi:0.0001:2*pi; 
 y=sin(x);
 h=figure;
 plot(x,y)

You can then enable the data cursor mode as

 datacursormode(h,'on');

Now when the cursor moves across the figure, it has the shape of the plus symbol (cross-hairs). Clicking near a point on the sine curve snaps the cross-hairs to that point and text box appears displaying the x and y coordinate.

To turn the data cursor mode off, just type

 datacursormode(h,'off');