How to break a single polyline into multiple polylines in ArcMap 10

Question

I want to delete certain segments in a selected segment of a line in a line shape file in ArcMap10.

Answer 1

Splitting lines is generally performed using the editor toolbar, which will also allow you to delete unwanted segments once they are split.

Depending on the nature of your data there are a number of ways to split a line, outlined here in the ArcGIS documentation, such as:

• At intersections
• At a specified distance along the line
• Manually
• Into equal parts

Answer 2

start editing from editor. use split tool in editor to create a vertex where you hope to break the line. Then click the segment you want to delete with edit tool(a black arrow icon), and hit delete key.