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Configure snapping

On the Edit tab, in the Snapping group, Snapping List By Snapping contains settings to manage how and when the pointer locks onto other features as you hover near them. These settings are also available on the status bar located at the bottom of the active map or scene.

Snapping enables you to accurately place or align features with other features. It can also be useful when measuring distances. Snap agents automatically snap the pointer to specific feature geometry, for example, to vertices, edges, or intersecting lines.

When you hover near a feature within the tolerance distance, textual feedback shows the active snap agents and the layer to which you are snapping. Optional settings include the XY tolerance in pixel or map units, the snap tip color, and snapping to unfinished sketch geometry.

For steps to turn snapping on or off for all features on a layer, see Turn snapping on or off by layer.

Turn snapping on or off

When you create or modify features, you can control the accuracy of your edits by turning snapping on or off as you work. Turning snapping on or off does not change your snap agent settings.

  1. On the Edit tab, in the Snapping group, click Snapping List By Snapping.

    Each subsequent click turns snapping on or off.

  2. Note:

    You can press and hold the spacebar to temporarily turn off snapping as you create or modify features.

Configure the snap agents

When you edit features, the best practice is to enable only the snap agents your work requires. For example, some workflows only require vertex and midpoint snap agents, while other workflows may require point, endpoint, and tangent snap agents.

  1. On the Edit tab, in the Snapping group, click the Snapping drop-down arrow List By Snapping.
    • These settings are also available on the status bar at the bottom of the active map or scene.

    Snapping

  2. Click a snap agent to enable or disable it.

    Enabled snap agents appear shaded.

    Tip:

    To snap to point cloud data on a LAS dataset layer, enable Point Point.

  3. Move the pointer back to the map.

Snap agents

The following snap agents are available:

Snap agentsSnaps to

Point Point

Nearest point features and LAS data point features in 3D scenes.

Endpoint Endpoint

Nearest start or endpoint of a polyline or polygon

Vertex Vertex

Nearest vertex of a polyline or polygon

Edge Edge

Nearest polyline or polygon segment

Intersection Intersection

Nearest intersection of two or more polylines or polygons

Midpoint Midpoint

Midpoint of the nearest polyline or polygon segment

Tangent Tangent

Nearest point of tangency on an arc or curved polygon segment

Set the snapping tolerance

The snapping tolerance is the distance from a feature where the enabled snap agents become active and snap the pointer to the feature, for example, to a vertex or an edge. You can set the tolerance by drawing a circle or specifying XY values in pixels or map units, and Z values in Z units.

  1. On the Edit tab, in the Snapping group, click the Snapping drop-down arrow List By Snapping.
  2. To set the snapping tolerance by drawing a circle, do the following:
    1. Click Set snapping tolerance Snapping Tolerance.
    2. Click the map to set the center point.
    3. Move the pointer.

      The tolerance value and a circle preview dynamically update as you move the pointer across the map.

    4. Click the map to set the snapping tolerance.
  3. To set the snapping tolerance by specifying values in pixels or map units, do the following:
    1. Click Snapping Settings Options.

      Snapping Settings

    2. In the XY tolerance text box, type the distance and choose Pixels or Map units.
    3. In the Z tolerance (2D only) text box, type the distance in Z units.
    4. Click OK.

Change snap tip color and sketch settings

  1. On the Edit tab, in the Snapping group, click the Snapping drop-down arrow List By Snapping.
  2. Click Snapping Settings Options.
  3. Change one or more of the following settings:
    • Snap tip color—The color of the text feedback that appears near the pointer.
    • Snap to sketch— When enabled, the pointer snaps to unfinished geometry as you create or modify features.
  4. Click OK.