I have this polygon that I need to cut into pieces, 10 horizontal and 10 vertical blocks. My though was converting the polygon to polylines, (pic 1) then break the polyline into 4 parts, then creating the 10 horizontal and 10 vertical lines, then converting those into polygons. The issue I am having is that when creating the segments, the west and south boundary have 20 segments.
Not know why 20 segments were being created for the west and south boundary. I did a arcpy.management.FeatureVerticesToPoints and that it was creating two segments for the west and south polylines (pic 2).
I am not sure how this can happen given that the polyline comes from the polygon.
import arcpy
# Define your workspace and input feature class
arcpy.env.workspace = r"C:\Temp\Sec.gdb"
input_fc = "Sec_1N2W30"
output_fc = "Polygons_Output" # This will store the polygons
segment_fc = "Segmented_Polylines" # This will store the segmented polylines
# Convert features to polygons
arcpy.management.FeatureToPolygon(input_fc, output_fc)
# Create an empty Polyline feature class for segmented polylines
arcpy.CreateFeatureclass_management(arcpy.env.workspace, segment_fc, "POLYLINE")
# Create a cursor to insert segmented polylines
with arcpy.da.InsertCursor(segment_fc, ["SHAPE@"]) as insert_cursor:
# Iterate over each polygon in the output_fc
with arcpy.da.SearchCursor(output_fc, ["SHAPE@"]) as search_cursor:
for row in search_cursor:
polygon = row[0]
# Get the exterior ring of the polygon
exterior_ring = polygon.boundary()
# Iterate over each part of the exterior ring
for part in exterior_ring:
if len(part) < 2:
continue
for i in range(len(part) - 1):
p1 = part[i]
p2 = part[i + 1]
line = arcpy.Polyline(arcpy.Array([p1, p2]))
length = line.length
segment_length = length / 10
# Create points at each segment interval
points = [p1]
for j in range(1, 10): # 9 additional points to create 10 segments
segment_point = line.positionAlongLine(j * segment_length)
points.append(segment_point.firstPoint)
points.append(p2)
# Ensure no duplicate points by slightly adjusting them
unique_points = []
for point in points:
if not unique_points or unique_points[-1] != point:
unique_points.append(point)
# Create polylines from the unique points and insert them
for k in range(len(unique_points) - 1):
segment_line = arcpy.Polyline(arcpy.Array([unique_points[k], unique_points[k + 1]]))
insert_cursor.insertRow([segment_line])
print("Segmented polylines created successfully in", segment_fc)
