User guide

Colony Counting
17-3
Fig. 17-2. Defining a counting region.
If you make a mistake in defining your counting region, click on the Reset
button at the bottom of the dialog box to start over.
Position the blue border until it is just inside the interior edge of the Petri
dish.
Note: If your border disappears when you release the mouse button after
dragging, check to make sure that the Show Data Area checkbox is
checked. This checkbox is located at the bottom of the dialog box.
If your circle is slightly off-center, you can reposition it by positioning your
cursor on the center “target” of the circle. The cursor will change to a
multidirectional arrow, and you can drag the entire circle.
To resize your counting region circle, position your cursor on the outer edge
of the circle. The cursor will change to a bidirectional arrow and you can drag
the border in or out.
Drag cursor
out from
center to
define region