Creates segments along a selected line feature by splitting it according to a table of measures and saving it in a new feature class.

segmentLineByMeasures.py

#
# @date 04/08/2015
# @author Cindy Williams
#
# Creates segments along a selected line feature
# by splitting it according to a table of measures
# and saving it in a new feature class.
#
# For use as a standalone script.
#

import arcpy

arcpy.env.workspace = r"C:\Some\Arb\Folder\work.gdb"

selected_feature = "Line1"
selected_field = "Name"
qry = """ "{0}" = '{1}' """.format(selected_field, selected_feature)

# Get the selected geometry
line_geom = arcpy.da.SearchCursor("ftr_lines", "SHAPE@", qry).next()[0]

fields_fc = ["SHAPE@", "Description"]
cursor_ins = arcpy.da.InsertCursor("ftr_segments", fields_fc)

fields_tbl = ["Measure", "Description"]
start = 1 # Placeholder for previous row value

with arcpy.da.SearchCursor("tbl_measures", fields_tbl, qry) as cursor_sea:
  for row in cursor_sea:
    if start == 1:
      start = 0
      print("Handled first row")
    else:
      end = row[0]
      segment_geom = line_geom.segmentAlongLine(start, end)
      segment = [segment_geom, row[1]]
      cursor_ins.insertRow(segment)
    start = row[0]

del cursor_ins