Extend or trim a polyline feature

The Extend or Trim tool extends or trims a line feature to an existing feature boundary. You can extend or trim with the same tool or use one of two preset tools that exclusively extend or trim. This tool is available in the Modify Features pane.

Extend or trim a selected line

To extend a selected line, hover over the boundary to which the preview extends and click it. To trim a selected line, hover over the intersection and click it where the dashed preview terminates.

1. On the Edit tab, choose your snapping preferences, and show the Modify Features pane.
   1. In the Snapping group, click the Snapping drop-down menu and enable your snapping preferences.

      To temporarily turn snapping off while you edit a feature, press and hold the spacebar.

   2. In the Features group, click Modify .
2. In the tool pane, expand Reshape, and click Extend or Trim .
   • To close the tool, press Esc.
3. Select the features.
   1. Uncheck Allow Extend or Trim without a selection.

      

   2. Click the Select tool and select the feature.
   • To refine the selection in the tree view, click a feature to flash it in the map, and double-click to select it and unselect all other features.
   • Alternatively, right-click the feature and click Only Select This .

     

4. If the feature is COGO-enabled, check Recalculate COGO attributes to update the COGO attributes to reflect your changes.

   Note:

   This setting is available only when a map includes a COGO-enabled layer.

   Setting	Straight lines	Circular arcs
   Unchecked	All COGO field values are preserved.	All COGO field values are preserved.
   Checked	Direction is preserved. Distance is recalculated.	Direction is recalculated. Radius is preserved. ArcLength is recalculated.

5. The active tool appears highlighted. To change it, click one of the available tools.

   Extend or Trim	Extends or trims a line feature depending on the position of the pointer
   Extend	Extends a line feature
   Trim	Trims a line feature

6. To extend the selected line, hover over the boundary to which the preview extends and click it.

   The preview appears as a continuous line.

7. To trim the selected line, hover over the intersection and click it where the dashed preview terminates.

   The preview appears as a dashed line.

   Note:

   Trimming with a selection automatically chooses the shorter segment. To trim the longer segment, trim without a selection.

Extend or trim without a selection

To extend a line without a selection, hover over the line and click it when the preview extends to a destination boundary. To trim a line without a selection, hover over the line and click it when the dashed preview terminates at the destination boundary.

1. On the Edit tab, choose your snapping preferences, and show the Modify Features pane.
   1. In the Snapping group, click the Snapping drop-down menu and enable your snapping preferences.

      To temporarily turn snapping off while you edit a feature, press and hold the spacebar.

   2. In the Features group, click Modify .
2. In the tool pane, expand Reshape, and click Extend or Trim .
   • To close the tool, press Esc.
3. Check Allow Extend or Trim without a selection.
4. The active tool appears highlighted. To change it, click one of the available tools.

   Extend or Trim	Extends or trims a line feature depending on the position of the pointer
   Extend	Extends a line feature
   Trim	Trims a line feature

5. To extend a line, hover over the line and click it when the preview extends to a destination boundary.

   The preview appears as a continuous line.

6. To trim a line, hover over the line and click it when the dashed preview terminates at the destination boundary.

   The preview appears as a dashed line.