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unavco_ingest_single.py
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unavco_ingest_single.py
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#!/usr/local/bin/python
#==========================================================================
# Ingest a given UNAVCO dataset into the corresponding databases.
# To be invoked by the overall unavco_ingest.py using subprocess,
# destination data directory and temporary working directory are defined in
# properties.
#
# input: unavco dataset name (pbo or nucleus)
# output: corresponding overall sqlite db file with all data ingested;
# as well as duplicate-filled sqlite db file for individual stations
#
# usage:
# unavco_ingest_single.py pbo|nucleus
#
# output:
# /path/to/rdahmm/unavco_data.sqlite
# /path/to/rdahmm/stationID.sqlite
#===========================================================================
import os, sys, string
import sqlite3 as db
import urllib2
from datetime import date
from datetime import timedelta
from datetime import datetime
from properties import properties
from unavcosites import pbo_sites, nucleus_sites
numargv = len(sys.argv)
if numargv == 1:
sys.exit("usage: unavco_ingest_single.py pbo|nucleus")
elif numargv == 2:
dataset = sys.argv[1]
else:
sys.exit("Invalid number of parameters!")
if dataset == 'pbo':
station_list = pbo_sites()
elif dataset == 'nucleus':
station_list = nucleus_sites()
else:
sys.exit("Unrecognized dataset: " + dataset)
#rdahmm_path = "/home/yuma/RDAHMM/Data/"
data_path = properties('data_path')
datadir = data_path + "UNAVCO_" + dataset.upper() + "/"
dbfile = datadir + "UNAVCO_" + dataset.upper() + ".sqlite"
#print datadir, dbfile
if not os.path.exists(datadir):
cmd = "mkdir -p " + datadir
os.system(cmd)
#if the same db file exists, drop it
if os.path.isfile(dbfile):
print "deleting old database " + dbfile
os.remove(dbfile)
# creating/connecting the database
conn = db.connect(dbfile)
# creating a Cursor
cur = conn.cursor()
# creating tables
sql ="""CREATE TABLE GPSTimeSeries (
StationID CHAR(4),
North Num,
East Num,
Up Num,
Nsig Num,
Esig Num,
Usig Num,
Timestamp TEXT,
UNIQUE (StationID, Timestamp))"""
cur.execute(sql)
sql ="""CREATE TABLE ReferencePositions (
StationID CHAR(4),
Latitude Num,
Longitude Num,
Height Num,
UNIQUE (StationID))"""
cur.execute(sql)
conn.commit()
today = date.today().isoformat() + "T00:00:00"
url_prefix = "http://web-services.unavco.org/gps/data/position/"
url_suffix = "/v1?referenceFrame=igs08&starttime=1980-01-06T00:00:00&endtime=" + today
for entry in station_list:
(stationID, long, lat, height) = entry
sql = "INSERT INTO ReferencePositions (StationID, Latitude, Longitude, Height) "
sql += " VALUES ('%s', '%s', '%s', '%s')" % (stationID, lat, long, height)
cur.execute(sql)
station_dbfile = datadir + stationID + ".sqlite"
if os.path.isfile(station_dbfile):
print "deleting old station database " + station_dbfile
os.remove(station_dbfile)
station_conn = db.connect(station_dbfile)
station_cur = station_conn.cursor()
station_sql ="""CREATE TABLE StationGPSTimeSeries (
North Num,
East Num,
Up Num,
Nsig Num,
Esig Num,
Usig Num,
Timestamp TEXT,
Interploated INT Default 0,
UNIQUE(Timestamp))"""
station_cur.execute(station_sql)
station_conn.commit()
url = url_prefix + stationID + url_suffix
#print url
records = urllib2.urlopen(url).read()
records = records.split("\n")[1:-1]
last_item = ""
for item in records:
[ctimestamp, north, east, up, nsig, esig, usig, quality] = [x.strip() for x in item.split(',')]
if abs(float(north)) > 20*1000 or abs(float(east)) > 20*1000 or abs(float(up)) > 20*1000:
continue
timestamp = datetime.strptime(ctimestamp, "%Y-%m-%dT%H:%M:%S")
sql = "INSERT INTO GPSTimeSeries (StationID, North, East, Up, Nsig, Esig, Usig, Timestamp) "
sql += " VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s')" % (stationID, north, east, up, nsig, esig, usig, timestamp.isoformat()[:10])
cur.execute(sql)
if last_item == "":
last_item = item
else:
[ltimestamp, lnorth, least, lup, lnsig, lesig, lusig, lquality] = [x.strip() for x in last_item.split(',')]
last_timestamp = datetime.strptime(ltimestamp, "%Y-%m-%dT%H:%M:%S")
# if missing days from last to current, fill with last
for i in range(1, (timestamp - last_timestamp).days):
ts = last_timestamp + timedelta(days=i)
interploated = 1
station_sql = "INSERT INTO StationGPSTimeSeries (North, East, Up, Nsig, Esig, Usig, Timestamp, Interploated) "
station_sql += " VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s')" % (lnorth, least, lup, lnsig, lesig, lusig, ts.isoformat()[:10], interploated)
station_cur.execute(station_sql)
last_item = item
station_sql = "INSERT INTO StationGPSTimeSeries (North, East, Up, Nsig, Esig, Usig, Timestamp) "
station_sql += " VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s')" % (north, east, up, nsig, esig, usig, timestamp.isoformat()[:10])
station_cur.execute(station_sql)
station_conn.commit()
conn.commit()
station_cur.close()
station_conn.close()
#insert duplicates for missing days in the station database
# create index
sql = "CREATE INDEX idx_StationID ON GPSTimeSeries(StationID)"
cur.execute(sql)
sql = "CREATE INDEX idx_Timestamp ON GPSTimeSeries(Timestamp)"
cur.execute(sql)
sql = "CREATE INDEX idx_RefStationID ON ReferencePositions(StationID)"
cur.execute(sql)
conn.commit()
cur.close()
conn.close()