Scheduled Task
--------------
1.offline.updateAlgoData periodically.
(wpp)[root@localhost wlan-pos]# crontab -l
*/1 * * * * /opt/wpp/src/wlan-pos/tool/cron/updateAlgoData

Data Specification
------------------
1.raw data with 14/16 columns(fields).
#   # FIELD  14col,16col
    # IMEI      0, 3
    # IMSI      1, 4
    # UA        2, 5
    # MCC       3, 6
    # MNC       4, 7
    # LAC       5, 8
    # CI        6, 9
    # rss       7, 10
    # lat       8, 11
    # lon       9, 12
    # h         10,13
    # wlanmacs  11,14
    # wlanrsss  12,15
    # Time      13,2
2. columns definition for reqreterr data file and addcols structure.
# reqreterr format:    whole           addcols
# macs                  0,                    
# rsss                  1,      
# ref(lat,lon)          2,3,    
# cpp(lat,lon,err)      4,5,6,          
# ecpp                  7,              0,      
# ee_cpp                8,              1,      
# py(lat,lon,err)       9,10,11,        2,3,4,    
# epy                   12,             5,
# ee_py                 13,             6,
# e_cpp_py              14,             7,
# ee_cpp_py             15,             8,
# google(lat,lon,err)   16,17,18,       9,10,11
# err_google            19,             12,
# ee_google             20,             13,

Known Issues
------------
1. visAPs = [ ['00:19:E0:E3:85:D0','-92'] ], cid = 1304, timestamp=20101013-152014 
2. visAPs = [ ['00:17:7B:0F:85:F0','-68'] ], cid = 1304, timestamp=20101013-095222
3. sum_rss = [ 0, 0, 0, ... ], when issue 1 happens.

Quick Start
------------
1.offline
    1) fingerprints calibration.
        a) ./tool/bt-dev-con && xgps &
        b) ./run -n <start_spid> -r <repeat_times>
        c) ./offline.py -c dat/<time-spid>.rmp
        d) ./offline.py -u 1
    2) Dumbtest for stability.
        ./run -d
    3) Compile all *.py to *.pyc.
        ./run -m

2.online
    1) Pure fingerprinting.
    sudo ./online.py -v
    2) Accuracy evaluation(GPS available).
    sudo ./test.py -v


SP id assignment
----------------
    borq: floor 8: 1-12
    floor 1-8: 100-899
    dacheng floor 12: 1200-1299,  e.g. 1203:door1203.
    home yjl: 90-99
    home neighborhood: 30-89