====== Fence Editor ======

===== What does it do ? =====

Use the Fence to describe a perimeter for diverse purposes : select objects within, hide area outside, use as source for a buffer or export or other functions. A fence is a single assistance object that can consist out of several parts (each part is an area figure).

===== The Toolbar =====

Open the toolbar by selecting the menu option Tool -> Fence... .

{{toolbar_fence.gif?nolink}}

==== Creation tools ====

You can create a fence by using the add part tool (({{fence_part_add.gif?20x20&nolink}}))
\\ You can clear the fence by using the remove fence tool (({{fence_remove.gif?20x20}}))

{{create_fence.gif?473x356&nolink}}

{{view_fence.gif?473x356&nolink}}

==== Edit tools ====

The fence behaves as an area object : you can add {{fence_remove.gif?20x20&nolink}}.

Use the undo button (({{fence_undo.gif?20x20&nolink}})) to undo the last change.

You can calculate parallels to the fence using the {{fence_parallel_distance.gif?20x20&nolink}} buttons. The last one requires the entry of a fixed distance, while the first one calculates a parallel through a clicked point.

To create a rectangular Fence with a specific orientation, use a [[orbitgis:data:editing:constructions:lines|Construction Line]] to determine the orientation, then use the {{fence_rectangle_add.gif?20x20&nolink}} button to draw a rectangle.

{{fence_rectangle.gif?507x373&nolink}}

==== Visibility ====

{{con_visibility_on.gif?20x20&nolink}}

You can switch the visibility{{con_visibility_on.gif?20x20&nolink}} of the Fence on/off. Note : switching off does not clear the fence. Fence visibility is also applied when printing.

You can zoom and focus to the fence using the {{zoom_focus.gif?20x20&nolink}} button.

==== Hide Area ====

{{fence_hide_outside.gif?20x20&nolink}} 

You can hide the map outside the fence area and simulate an extraction of the map view. This is also applied when printing.

{{hide_outside_fence.gif?473x356&nolink}}

{{hide_outside_preview.gif?600x400&nolink}}

==== Select objects ====

{{fence_select_objects.gif?20x20&nolink}} Click this button to select all objects within the current fence. This function is similar to the [[orbitgis:data:objects:select objects|Select Object by Area]] function.