The Edit Vertices tool edits vertex m-values stored on polylineZM features. This tool is available in the Modify Features pane.
You can edit m-values individually, apply the same value to multiple vertices, or recalculate m-values along an entire route feature. To calibrate a selected route, use the Calibrate Route tool.
Note:
The m-value field is a property of a feature class that is enabled when a feature class is initially created.
Linear referencing systems (LRS) use routes, created as PolylineZM features with m-values, to model linear distances and related events independent of the line geometry.
Clear or edit m-values in the pane
To clear or edit m-values in the geometry properties table, click the individual fields. To apply the same values to multiple rows, select the rows and click Update M Values.
- On the Edit tab, choose your snapping preferences, and show the Modify Features pane.
- 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.
- In the Features group, click Modify .
- In the Snapping group, click the Snapping drop-down menu and enable your snapping preferences.
- Expand Reshape and click Vertices .
- In the pane, click Select , and select a polyline or polygon feature.
- To refine the selection, right-click a feature in the tree view, and click Unselect or Only Select This .
- Clear or edit m-values in the geometry properties table.
- To clear an m-value and set it to NaN, click the field and press Backspace or Delete.
- To apply the same value to multiple vertices, select the rows, and click Update M Values .
- To finish the feature, right-click and click Finish , or press the F2 key.
Recalculate m-values
To recalculate m-values along an entire route feature, right-click a segment and click the corresponding command.
- On the Edit tab, choose your snapping preferences, and show the Modify Features pane.
- 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.
- In the Features group, click Modify .
- In the Snapping group, click the Snapping drop-down menu and enable your snapping preferences.
- Expand Reshape and click Vertices .
- In the pane, click Select , and select a polyline or polygon feature.
- To refine the selection, right-click a feature in the tree view, and click Unselect or Only Select This .
- Right-click a segment, click M Value, and click the corresponding command.
Insert Vertex At M
Inserts a vertex at a specified Measure value in the same direction in which the m-values are increasing.
Apply Factor
Multiplies all m-values by a specified Factor value.
Offset
Sums each m-value with a specified Offset value.
Calculate NaN
Replaces all unknown (NaN) m-values with a value that is interpolated or extrapolated from existing m-values.
Drop Measures
Resets all m-values to unknown (NaN).
Set As Distance
Assigns m-values to all vertices starting with a specified Starting M value and interpolating the remaining values across the geometry length of the feature.
Set From/To
Assigns the specified From and To m-values to the start and end of the feature, respectively.
Set Direction As M
Flips the geometry direction to match the direction in which the m-values are increasing.
- To finish the feature, right-click and click Finish , or press the F2 key.