fence.py

#!/usr/bin/python3
import sys
import csv
from PIL import Image

if (len(sys.argv) != 2):
  print('please a single give me a csv filename');
  sys.exit(-1)

name = sys.argv[1]

coords = []

class Coord:
  def __init__(self,x,y):
    self.x = x
    self.y = y

with open(sys.argv[1]) as csv_file:
  csv_reader = csv.reader(csv_file)
  next(csv_reader, None)
  for row in csv_reader:
    coords.append(Coord(int(row[1]),int(row[3])))

minX = 1000000
maxX = -1000000
minY = 1000000
maxY = -1000000

for c in coords:
  if (c.x < minX):
    minX = c.x
  if (c.x > maxX):
    maxX = c.x
  if (c.y < minY):
    minY = c.y
  if (c.y > maxY):
    maxY = c.y

deltaX = maxX - minX
deltaY = maxY - minY

for c in coords:
  c.x = (c.x - minX)
  c.y = (c.y - minY)

map = Image.new('1',(deltaX+1,deltaY+1),1)
px = map.load()

for i,k1 in enumerate(coords):
  k = coords[i-1]
  for y in range(k.y,k1.y,1 if k1.y > k.y else -1):
    px[k.x,y] = 0
  for x in range(k.x,k1.x,1 if k1.x > k.x else -1):
    px[x,k.y] = 0
  px[k.x,k.y] = 0

map.save('map.png','png')
print(minX,minY)