---
title: Point.dy()
---
The `Point.dy()` method returns the delta (in mm) along the Y-axis between this
point and the point you pass it.
## Signature
```js
float point.dy(Point point)
```
## Example
<Example caption="An example of the Point.dy() method">
```js
({ Point, points, Path, paths, units, part }) => {
points.from = new Point(10, 40)
points.to = new Point(10, 10)
paths.line = new Path()
.move(points.from)
.line(points.to)
.setClass("dotted")
.setText(units(points.from.dy(points.to)), 'center')
// Prevents clipping
paths.diag = new Path()
.move(new Point(-10,40))
.move(new Point(60,10))
return part
}
```
</Example>
ab3204f9f1