how can we get the equal interval points along the line direction?>
Which resampling method would be better to use .
I'm just going to make a diagram to go with this. So if you can, stay on-line.
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Have a look at my graph below. You click on it to get it normal size.
Do you want to be able to divide AB into a set of equal segments, each with its own coordinates ?
OK. I've changed the graph a little to make an easier example.
Let's say A is (2,3) and B is (12,8), and we want to divide the line into 5 equal parts.
(12-2)/5 = 2 and (8-3)/5 = 1 so we can step from point to point by going across 2 and up 1.
The points are (2,3) (4,4) (6,5) (8,6) (10,7) and (12,8)
So now to generalise that into a formula. For the x coordinates :
where i goes from 0 to n
and the y coordinate is similar.