Click and drag to select plot section

[ODiogoSilva]

Zoom in on a selected region of the plot by clicking and dragging a region. There should be three types of region selection.

• When dragging horizontally within a small vertical distance of the initial point, select the total y range of the plot over the specified x-range.

• When dragging vertically within a small horizontal distance of the initial point, select the total x range of the plot over the specified y-range.

• When the final dragging point falls well outside the designated vertical and horizontal thresholds of the two points above, or when if falls inside the thresholds but exhausts a certain timeout, select a rectangular region.