Sped up redis receiver a little. Also better configuration.

.gitignore

@@ -1,4 +1,4 @@
 plot/*
-plot*
+plot.*
 output.*
 .ipynb_checkpoints

redis_feeder.py

@@ -1,16 +1,25 @@
-import socket
 import redis
+import socket
+
+# redis server
+REDIS_HOST = 'localhost'
+REDIS_PORT = 6379
+# ADSB feeder
+FEEDER_HOST = '192.168.249.26'
+FEEDER_PORT = 30003
+# TTL of records, in seconds
+EXPIRATION = 1200
 
-r = redis.Redis(host='localhost', port=6379, db=0)
+r = redis.Redis(host=REDIS_HOST, port=REDIS_PORT, db=0)
 
 
 sock = socket.socket()
 sf = sock.makefile()
-sock.connect(('192.168.249.26', 30003))
+sock.connect((FEEDER_HOST, FEEDER_PORT))
 while(True):
  fields = sf.readline().split(',')
  if(fields[0] == 'MSG' and fields[1] == '3'):
  if(fields[14].strip != '' and fields[15].strip != '' and fields[11].strip != ''):
  coords = ','.join([fields[14], fields[15], fields[11]])
- r.setex(coords, 3600, coords)
+ r.setex(coords, EXPIRATION, '')
 

redis_plotter.py

@@ -1,21 +1,25 @@
-import redis
-import numpy as np
-from PIL import Image
 import colorsys
+import redis
 import time
+from PIL import Image
 
-r = redis.Redis(host='localhost', port=6379, db=0, decode_responses=True)
-
+# redis server
+REDIS_HOST = 'localhost'
+REDIS_PORT = 6379
+# crop parameters
 RADAR_COORDS = [55.83871, 37.18298]
 COEFS = [300, 300, 40000]
 SIZE = [3000, 1000]
 
+
+r = redis.Redis(host=REDIS_HOST, port=REDIS_PORT, db=0, decode_responses=True)
+
 i = 0
 while(True):
  im = Image.new('RGB', SIZE, color=(10, 0, 20))
  for key in r.scan_iter():
  try:
- data = r.get(key).split(',')
+ data = key.split(',')
  cdata = []
  cdata.append(int(((float(data[1]) - RADAR_COORDS[1]) * COEFS[0]) + SIZE[0]/2))
  cdata.append(int(((float(data[0]) - RADAR_COORDS[0]) * COEFS[1]) + SIZE[1]/2))
@@ -26,6 +30,8 @@
  pass
  except AttributeError as e:
  pass
+ except IndexError as e:
+ pass
  im = im.transpose(Image.FLIP_TOP_BOTTOM)
  im.save("plot/frame_%06d.png" % i)
  i += 1