## The `Chartalttopoint' method

Argument: 2-element Numeric Vector
Result: 2-element Numeric Vector

Valid for: Chart

This method converts from Chart coordinates (using the Alternate Y scale) to coordinates of the visible control on the screen. It can be useful if you are adding your own annotations or other graphic elements using the `Draw` method, and want to relate these to points of a Series which uses the Alternate Y Scale.

The argument is a two-element vector of Y value (using the Alternate Y scale) and X value. The result is a two-element vector of the corresponding vertical and horizontal position within the visible control (remembering that top, left is 0, 0). The result is expressed in the current `scale` of the control; you will probably want to set the `scale` property to 5 for pixels before calling this method.

Topic: APLX Help : System Classes : Methods : Chartalttopoint

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