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seisPlotter.py
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seisPlotter.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# seisPlotter.py
#
# Reads a bunch of seed files based on the time, and then displays a 12 hour
# helicorder plot ("dayplot").
#
# TODO:
# * Parse through the files on the server to make the dayplot
# Put file in /srv/www/out
# * Generate a small XHTML page that can be imported containing:
# Dayplot
# List of Earthquakes in plot
# "MXX LOCATION (XX km depth), Dist from receiver: XX km"
# link location to USGS page (in feature['properties']['url']
# or "No Earthquakes currently displayed"
#
import sys
from time import strftime, time, localtime
start_execute = time()
sys.stdout.write('loading dependencies... ')
sys.stdout.flush()
import matplotlib
matplotlib.use('Agg')
import datetime, urllib, json, subprocess
from obspy import read, UTCDateTime#, #Stream, Trace
from geopy.distance import vincenty
sys.stdout.write('done.\n')
sys.stdout.flush()
seismometer = (32.865468, -117.253436)
eventcoll = []
outstring = ""
# Get the hostname
p1=subprocess.check_output(['uname','-n']).rstrip()
p2=subprocess.check_output(['awk','/^domain/ {print $2}','/etc/resolv.conf']).rstrip()
hostname = p1 + "." + p2
datapath = "/srv/tc1/data/"
sys.stdout.write('querying USGS earthquake feed... ')
sys.stdout.flush()
url = "http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.geojson"
response = urllib.urlopen(url);
data = json.loads(response.read())
sys.stdout.write('done.\n')
sys.stdout.flush()
sys.stdout.write('filtering results by distance/magnitude... ')
sys.stdout.flush()
now = datetime.datetime.now() + datetime.timedelta(hours=7, minutes=0, seconds=0) # convert time to UTC
past = now - datetime.timedelta(hours=12, minutes=now.time().minute, seconds=now.time().second, microseconds=now.time().microsecond)
start = UTCDateTime(past) # put in UTCDateTime object
end = UTCDateTime(now)
for feature in data['features']:
place = feature['properties']['place']
mag = feature['properties']['mag']
url = feature['properties']['url']
(lon,lat,depth) = feature['geometry']['coordinates']
eventtime = UTCDateTime(feature['properties']['time']/1000)
if (end - eventtime) <= 46800:
# Decide which earthquakes to show
show_quake = False
dist = vincenty(seismometer, (lat,lon)).kilometers
if (dist >= 8000):
if mag >= 6.0:
show_quake = True
elif (dist < 8000 and dist >= 5000):
if mag >= 5.9:
show_quake = True
elif (dist < 5000 and dist >= 3000):
if mag >= 5.8:
show_quake = True
elif (dist < 3000 and dist >= 1500):
if mag >= 5.6:
show_quake = True
elif (dist < 1500 and dist >= 1000):
if mag >= 4.7:
show_quake = True
elif (dist < 1000 and dist >= 300):
if mag >= 3.5:
show_quake = True
elif (dist < 300 and dist >= 150):
if mag >= 3.2:
show_quake = True
elif (dist < 150):
if mag >= 3:
show_quake = True
if show_quake:
# add to event collection
event = {"time": eventtime, "text": ("M%s" % mag) + " " + place}
eventcoll.append(event)
outstring = outstring + "<a href=\"%s\" target=\"_new\">M%.1f %s (%.2f km depth), Distance from receiver: %.2f km</a><br />" % (url,mag,place,depth,dist)
sys.stdout.write('done.\n')
sys.stdout.flush()
yr = end.year
ejday = end.julday
sjday = start.julday
#print "DEBUG: ejday: %d, sjday: %d" % (ejday,sjday)
sys.stdout.write('reading files... ')
sys.stdout.flush()
st = read(datapath + "%d/%d/*.mseed" % (yr,ejday), format="MSEED", starttime=start, endtime=end)
if sjday != ejday:
st1 = read(datapath + "%d/%d/*.mseed" % (yr,sjday), format="MSEED", starttime=start, endtime=end)
st = st + st1
sys.stdout.write('done.\n')
sys.stdout.flush()
numtraces = 0
try:
numtraces = len(st.traces)
except AttributeError:
sys.stdout.write('Error: There are no traces to gather.')
sys.stdout.write('\nExiting process...\n')
sys.stdout.flush()
sys.exit(1)
ftime = st.traces[0].stats.starttime
ltime = st.traces[numtraces-1].stats.endtime
(fyear,fmon,fday) = (ftime.year,ftime.month,ftime.day)
(lyear,lmon,lday) = (ltime.year,ltime.month,ltime.day)
filedates = "%d%02d%02d-%d%02d%02d" % (lyear,lmon,lday,fyear,fmon,fday)
outfile = "/srv/www/%s/public/images/dayplots/iri.soca.%s.bhz.png" % (hostname, filedates)
sys.stdout.write('filtering data... ')
sys.stdout.flush()
st.filter("lowpass", freq=0.1, corners=2)
sys.stdout.write('done.\n')
sys.stdout.flush()
sys.stdout.write('generating plot... ')
sys.stdout.flush()
st.plot(type="dayplot", interval=60, right_vertical_labels=False,
#title="%s (%s)" % (st.traces[0].id,hostname),
title="",
vertical_scaling_range=15, one_tick_per_line=True,
color=['k', 'r', 'b', 'g'],
show_y_UTC_label=True,
events=eventcoll,
outfile=outfile
)
sys.stdout.write('done.\n')
sys.stdout.flush()
timestring = strftime("%a, %d %b %Y %H:%M:%S %Z", localtime())
if len(eventcoll) == 0:
outstring = "<i>No events currently displayed</i>"
imgurl = "http://%s/images/dayplots/iri.soca.%s.bhz.png" % (hostname, filedates)
htmlout = """
<html>
<head>
<meta http-equiv="Refresh" content="300">
<style>
table, th, td {
border: 0px solid black;
border-collapse: collapse;
}
</style>
</head>
<body>
<table>
<tr><td><img src="%s" /></td></tr>
<tr><th>Earthquakes shown on this plot</th></tr>
<tr><td style="text-align:center">%s</td></tr>
<tr><td style="text-align:center"><i>Note: Unlabeled seismic events are usually noise sources within the building.</i></td></tr>
<tr><td style="text-align:center"><i>Generated: %s on %s</i></td></tr>
</table>
</body>
</html>
""" % (imgurl, outstring, timestring, hostname)
sys.stdout.write('writing include file... ')
sys.stdout.flush()
f = open('/srv/www/%s/public/out/tc1.html' % hostname, 'w')
f.write(htmlout)
f.close()
sys.stdout.write('done.\n')
sys.stdout.write('processing finished.\n')
end_execute = time()
elapsed = end_execute - start_execute
print "Elapsed run time: ", elapsed, "seconds."