Generates chainage at a set distance along line features and saves it to an existing, empty point feature class.

generateChainageAlongLineFeatures.py

#
# @date 27/11/2014
# @author Cindy Williams
#
# Generates chainage at a set distance along line features
# and saves it to an existing, empty point feature class.
# The point feature class should have a predefined schema
# in case other attributes need to be transferred.
#
# For use as a standalone script.
#
 
import arcpy
 
arcpy.env.workspace = r"C:\Some\Arb\Folder\work.gdb"
pts = [] # Empty list for chainage points
route = arcpy.management.MakeFeatureLayer("ftr_route") # Feature class containing route features
chain = arcpy.management.MakeFeatureLayer("ftr_chain") # Empty points feature class
i = 1000 # Set the chainage amount

# Remove previous attempts at generating chainage
arcpy.management.TruncateTable(chain)
print("Chainage feature class emptied.")
 
# Loop over all the features in the route feature class
with arcpy.da.SearchCursor(route,["SHAPE@", "Route_Name"]) as rows:
    for row in rows:
	print("\tGenerating chainage along " + row[1])
        leng = row[0].length # Get the length of the current feature
        pts.append((0,(row[0].positionAlongLine(0)), row[1])) # Get the start point
        n = i # Start the count for current feature
        while i < leng:
            # Add a point at every i metres
            pts.append((i,(row[0].positionAlongLine(i)), row[1]))
            n += i
        pts.append((leng,(row[0].positionAlongLine(leng)), row[1])) # Get the end point

# Open a cursor on the points layer	
cursor = arcpy.da.InsertCursor(chain,("LEN","SHAPE@XY", "Route_Name"))
 
# Insert list of points into chainage feature class  
for row in pts:
    cursor.insertRow(row)
del pts, cursor
 
print("Script completed.")