Polygon Global Snap

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Snaps the features of a polygon layer to another layer (Point, Polyline or Polygon)

Inputs:

Outputs:

A polygon feature class - the vertices from the source layer will be moved to snap to the features of the Snap Layer (if within the snap tolerances

Options:

Snap Options 1 (Snap What) - this options lets the user set which elements of the source polylines to be used for snapping
- Vertices: All the vertices of the source polylines will be used.
- Insert Vertices: This option will get the vertices from the features of the snap layer and will insert new vertices into the source polylines. The new vertices together with the original ones will be used for snapping. This option is slower than the other ones, but gives the best snapping results especially if the polylines to be snapped have much less vertices than the ones from the Snap layer.
Snap Options 2 (Snap To What)
- Vertices: The polygons will be snapped to the nearest vertex of the nearest feature from the Snap layer
- Nearest edge: The polygons will be snapped to the nearest point of the nearest feature from the Snap layer
- Vertices & Edges: If there is a vertex closer than the snap tolerance to the polygons (their elements defined in Options 1) to be snapped, the polygon will snap to it, otherwise it will snap to the nearest edge.

Notes:

If the "Insert new Vertices" option is used the polygons will be cleaned from overlaps.
The snap distance should be in the units of the input dataset.
The Source and the Snap datasets can have different spatial references as long as they have the same Geographic Coordinate systems.

Example:

Before Snap	After Snap Option: Vertices	After Snap Option: Nearest Edge	After Snap Option: Vertices & Edges

ToolBox implementation
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Command line syntax

ET_GPSnapPolygons <input_dataset> <Reference_dataset> <out_feature class> <snap_tolerance> <snap_what> {snap_to_vertices} {snap_to_nearest}

Parameters

Expression	Explanation
<input_dataset>	A Polygon feature class or feature layer
<Reference_dataset>	A Point, Polyline or Polygon feature class or feature layer.
<out_feature_class>	A String - the full name of the output feature class (A feature class with the same full name should not exist)
<snap_tolerance>	A Double representing the Search tolerance (in the units of the input_dataset) to be used
<snap_what>	A String indicating what parts of the input polylines will be snapped. Possible values: Vertex: All the vertices of the source polylines will be used. Insert: This option will get the vertices from the features of the Reference_dataset and will insert new vertices into the source polylines. The new vertices together with the original ones will be used for snapping. This option is slower than the other ones, but gives the best snapping results especially if the polylines to be snapped have much less vertices than the ones from the Reference_dataset.
{snap_to_vertices}	A Boolean indicating whether snapping to the closest vertex of the nearest feature from the Reference_dataset to be used
{snap_to_nearest}	A Boolean indicating whether snapping to the nearest point of the nearest feature from the Reference_dataset to be used

Scripting syntax

ET_GPSnapPolygons (input_dataset, Reference_dataset, out_feature_ class, snap_tolerance, snap_what,snap_to_vertices, snap_to_nearest)