geowiki

7.2.3 Order extent type "Circle"

Circle
	The order extent type “Circle” is activated by clicking on the button “Circle”. Then the dimensions of the circle can be defined graphically in the map window, using the left mouse button : first the circle centre is defined in the map, it is represented with a black square marker. Then a 2nd point fixing the circle radius is defined in the map with the same procedure.

Steps to go
After the definition of the 2nd point, the circle is drawn in red transparent colour. This way a visual control of the order extent is possible. On the lower right of the screen the coordinates of the points that have been defined, are listed in the drop-down list,

and the radius of the circle is indicated in the unit “meters” :

Alternative steps to go
1. First define the circle centre like explained above
2. Then type the radius in “meters” in the field on the lower right of the screen:
3. Then validate with the button
After this validation, the circle is drawn in red transparent colour. This way a visual control of the order extent is possible.

To go on with your order…
After having defined the order extent, the user can move on to the next step of the ordering procedure by clicking on the button