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Split a feature

In the Modify Features pane, Split Split divides a line or a polygon feature into two or more features using a sketched line or a selection of features as input. The angular pitch of z-enabled segments is preserved and new vertices are assigned interpolated z-values.

Attribute values from the original feature are copied to the new features. Attributes constrained by attribute domains are determined by the domain split policy defined by the source geodatabase.

For steps to split a feature by specifying values, see the following:

Sketch a cutting line

The pointer automatically enters sketch mode when you click the Interactive tab. Sketch a cutting line across the features you want to split using the tools on the construction toolbar. A closed cutting line inside a single-part polygon feature creates a nested part.

  1. On the Edit tab in the Features group, click Modify Modify Features.

    The Modify Features pane appears.

  2. Expand Divide and click Split Split.

    The tool opens in the pane.

  3. Click the Interactive tab.

    The construction toolbar appears at the bottom of the map.

    Construction toolbar
  4. Do one of the following:
    • Check Allow splitting without a selection, and skip the next step.
    • Click Active Select Active Select, and select the features you want to split.
  5. To refine your selection do the following:
    • Double-click the feature item you want to split to remove all other features from the selection.
    • Right-click and use the context menu.

      Context menu

  6. On the Edit tab, in the Snapping group, enable your snapping preferences.
    Tip:

    As you sketch the cutting line, you can press and hold the spacebar to temporarily turn off snapping.

  7. Sketch a cutting line across the features using the tools on the construction toolbar.

    The cutting line must touch or cross the edges of each polygon feature in at least two places.

  8. On the construction toolbar, click Finish Finish or press the F2 key.

Select features

The By Feature tab allows you to select input features and use them to split selected target features. You can right-click selected items in the pane and move them to the other tab.

  1. On the Edit tab, in the Features group, click Modify Modify Features.

    The Modify Features pane appears.

  2. Expand Divide and click Split Split.

    The tool opens in the pane.

  3. Click the By Feature tab.
  4. Click the Input Features tab, click Active Select Active Select, and select the features you want to use as input cutting features.
  5. To refine your selection in the pane, do the following:
    • Double-click an item to remove all other features from the selection.
    • Right-click and use the context menu to move a feature to the target tab.
    Input context menu
  6. Click the Target Features tab, click Active Select Active Select, and select the features you want to split using the input features.
  7. To refine your selection in the pane, do the following:
    • Double-click an item to remove all other features from the selection.
    • Right-click and use the context menu to move a feature to the input tab.
    Target context menu
  8. Click Split.