set-scale in dc<%>

Sets a scaling factor that maps logical coordinates to device coordinates.

Changing a dc<%> object's origin or scale does not affect region% objects that were previously created. See region% for more information.

Restrictions on the magnitude of drawing coordinates are described with dc<%>.

• (send a-dc set-scale x-scale y-scale) -> void
     x-scale : non-negative real number
     y-scale : non-negative real number