def test_bad_query_raises(self):
"""Test that a bad query raises an error."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
with pytest.raises(BadQueryError):
client.get_catalog(q)
def test_bad_query_raises(self):
"""Test that a bad query raises an error."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
with pytest.raises(BadQueryError):
client.get_catalog(q)
def test_good_level3_query(self):
"""Test that a valid level 3 query succeeds."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
assert len(cat.datasets) == 1
def test_good_level3_query(self):
"""Test that a valid level 3 query succeeds."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
assert len(cat.datasets) == 1
class TestRadarServer(object):
@recorder.use_cassette('thredds_radarserver_metadata')
def setup(self):
self.server = 'http://thredds.ucar.edu/thredds/radarServer/'
self.client = RadarServer(self.server + 'nexrad/level2/IDD')
def test_stations(self):
assert 'KFTG' in self.client.stations
def test_float_attrs(self):
stn = self.client.stations['KFTG']
assert stn.elevation == 1675.0
assert stn.latitude == 39.78
assert stn.longitude == -104.53
def test_metadata(self):
assert 'Reflectivity' in self.client.variables
def test_valid_stations(self):
q = self.client.query()
q.stations('KFTG', 'KTLX')
assert self.client.validate_query(q), 'Bad validation check'
def test_invalid_stations(self):
q = self.client.query()
q.stations('KFOO', 'KTLX')
assert not self.client.validate_query(q), 'Bad validation check'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_raw_catalog(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog_raw(q).strip()
assert cat[-10:] == b'</catalog>'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_good_query(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog(q)
assert len(cat.datasets) == 1
@recorder.use_cassette('thredds_radarserver_level3_bad')
def test_bad_query_raises(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
with pytest.raises(BadQueryError):
client.get_catalog(q)
@recorder.use_cassette('thredds_radarserver_level3_good')
def test_good_level3_query(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
assert len(cat.datasets) == 1
class TestRadarServer(object):
@recorder.use_cassette('thredds_radarserver_metadata')
def setup(self):
self.server = 'http://thredds.ucar.edu/thredds/radarServer/'
self.client = RadarServer(self.server + 'nexrad/level2/IDD')
def test_stations(self):
assert 'KFTG' in self.client.stations
def test_float_attrs(self):
stn = self.client.stations['KFTG']
eq_(stn.elevation, 1675.0)
eq_(stn.latitude, 39.78)
eq_(stn.longitude, -104.53)
def test_metadata(self):
assert 'Reflectivity' in self.client.variables
def test_valid_stations(self):
q = self.client.query()
q.stations('KFTG', 'KTLX')
assert self.client.validate_query(q), 'Bad validation check'
def test_invalid_stations(self):
q = self.client.query()
q.stations('KFOO', 'KTLX')
assert not self.client.validate_query(q), 'Bad validation check'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_raw_catalog(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog_raw(q).strip()
eq_(cat[-10:], b'</catalog>')
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_good_query(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog(q)
eq_(len(cat.datasets), 1)
@recorder.use_cassette('thredds_radarserver_level3_bad')
@raises(BadQueryError)
def test_bad_query_raises(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
client.get_catalog(q)
@recorder.use_cassette('thredds_radarserver_level3_good')
def test_good_level3_query(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
eq_(len(cat.datasets), 1)
def get_radar(station, product):
rs = RadarServer('http://thredds.ucar.edu/thredds/radarServer/nexrad/level3/IDD/')
query = rs.query()
query.stations(station).time(datetime.utcnow()).variables(product)
validator = rs.validate_query(query)
if validator is not True:
ed = ErrorDialog('This query is not valid')
ed.show()
catalog = rs.get_catalog(query)
ds = list(catalog.datasets.values())[0]
data = Dataset(ds.access_urls['CdmRemote'])
rng = data.variables['gate'][:] / 1000.
az = data.variables['azimuth'][:]
ref = data.variables['BaseReflectivityDR'][:]
x = rng * np.sin(np.deg2rad(az))[:, None]
y = rng * np.cos(np.deg2rad(az))[:, None]
ref = np.ma.array(ref, mask=np.isnan(ref))
return x, y, ref
query.stations('KLVX').time(datetime.utcnow())
# We can use the RadarServer instance to check our query, to make sure we have required parameters and that we have chosen valid station(s) and variable(s)
#
# In[4]:
rs.validate_query(query)
# Make the request, which returns an instance of TDSCatalog; this handles parsing the returned XML information.
# In[5]:
catalog = rs.get_catalog(query)
# We can look at the datasets on the catalog to see what data we found by the query. We find one volume in the return, since we asked for the volume nearest to a single time.
# In[6]:
catalog.datasets
# We can pull that dataset out of the dictionary and look at the available access URLs. We see URLs for OPeNDAP, CDMRemote, and HTTPServer (direct download).
# In[7]:
ds = list(catalog.datasets.values())[0]
ds.access_urls
def test_bad_query_raises(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
client.get_catalog(q)
def test_good_level3_query(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
eq_(len(cat.datasets), 1)
class TestRadarServer(object):
"""Test radar server functionality for accessing data."""
@recorder.use_cassette('thredds_radarserver_metadata')
def setup(self):
"""Set up server and client for tests."""
self.server = 'http://thredds.ucar.edu/thredds/radarServer/'
self.client = RadarServer(self.server + 'nexrad/level2/IDD')
def test_stations(self):
"""Test parsing of the station information from the server."""
assert 'KFTG' in self.client.stations
def test_float_attrs(self):
"""Test parsing of values from the station information on the server."""
stn = self.client.stations['KFTG']
assert stn.elevation == 1675.0
assert stn.latitude == 39.78
assert stn.longitude == -104.53
def test_metadata(self):
"""Test parsing of variable information from server."""
assert 'Reflectivity' in self.client.variables
def test_valid_stations(self):
"""Test validating a query with valid stations."""
q = self.client.query()
q.stations('KFTG', 'KTLX')
assert self.client.validate_query(q), 'Bad validation check'
def test_invalid_stations(self):
"""Test validating a query with invalid stations."""
q = self.client.query()
q.stations('KFOO', 'KTLX')
assert not self.client.validate_query(q), 'Bad validation check'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_raw_catalog(self):
"""Test getting raw catalog bytes."""
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog_raw(q).strip()
assert cat[-10:] == b'</catalog>'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_good_query(self):
"""Test making a good request."""
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog(q)
assert len(cat.datasets) == 1
@recorder.use_cassette('thredds_radarserver_level3_bad')
def test_bad_query_raises(self):
"""Test that a bad query raises an error."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
with pytest.raises(BadQueryError):
client.get_catalog(q)
@recorder.use_cassette('thredds_radarserver_level3_good')
def test_good_level3_query(self):
"""Test that a valid level 3 query succeeds."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
assert len(cat.datasets) == 1
from datetime import datetime, timedelta
from siphon.catalog import TDSCatalog
from siphon.radarserver import RadarServer
import cartopy
import matplotlib.pyplot as plt
import numpy as np
from siphon.cdmr import Dataset
cat = TDSCatalog('http://thredds.ucar.edu/thredds/radarServer/catalog.xml')
rs = RadarServer(cat.catalog_refs['NEXRAD Level III Radar from IDD'].href)
query = rs.query()
now = datetime.utcnow()
query.stations('FTG').time_range(now - timedelta(hours=1),
now).variables('N0Q')
query_cat = rs.get_catalog(query)
list(cat.catalog_refs)
#pour utiliser n'importe quelle partie du catalogue d'UCAR
cat.catalog_refs['NEXRAD Level III Radar from IDD'].href
rs = RadarServer(cat.catalog_refs['NEXRAD Level III Radar from IDD'].href)
data = query_cat.datasets[0].remote_access()
print(list(data.variables))
field_name = 'BaseReflectivityDR'
range_data = data.variables['gate'][:]
azimuth_data = data.variables['azimuth'][:]
radar_data = data.variables[field_name][:]
def test_bad_query_raises(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
client.get_catalog(q)
def test_good_level3_query(self):
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
eq_(len(cat.datasets), 1)
def update(frame):
global SITE
global PRODUCT
print("Building Frame:",frame)
#What is the age of this frame?
frameIndex = frame % 9
frameAge = frameIndex * 10 # minutes old
# WHAT TIME WILL THE FRAME BE??
date = datetime.utcnow() - timedelta(minutes=frameAge)
year = date.year
month = date.month
day = date.day
hour = date.hour
minute = date.minute
# What type of radar site is this?..
siteType = validation.checkRadarType(SITE)
ncfVar = validation.checkProduct(PRODUCT)
colorTable = validation.checkColorTable(PRODUCT)
if siteType=='88D':
rs = RadarServer('http://thredds.ucar.edu/thredds/radarServer/nexrad/level3/IDD/')
elif siteType=='TDWR':
rs = RadarServer('http://thredds.ucar.edu/thredds/radarServer/terminal/level3/IDD/')
else:
print('INVALID SITE IDENTIFIER')
sys.exit()
# ACQUIRE DATA ----------------------------------------
query = rs.query()
query.stations(args.site).time(datetime(year,month,day,hour,minute)).variables(args.product)
rs.validate_query(query)
catalog = rs.get_catalog(query)
catalog.datasets
ds = list(catalog.datasets.values())[0]
ds.access_urls
# READ DATA ------------------------------------------
data = Dataset(ds.access_urls['CdmRemote'])
rng = data.variables['gate'][:]
az = data.variables['azimuth'][:]
ref = data.variables[ncfVar][:]
x = (rng * np.sin(np.deg2rad(az))[:, None])
y = (rng * np.cos(np.deg2rad(az))[:, None])
ref = np.ma.array(ref, mask=np.isnan(ref))
plot = ax.pcolormesh(x, y, ref, cmap=cmap, norm=norm, zorder=2)
title_line1 = '%s %s - %i:%i' % (args.site,args.product,hour,minute)
plt.title(title_line1,color='k',fontsize=18,fontweight='bold',style='italic')
return plot
class TestRadarServer(object):
"""Test radar server functionality for accessing data."""
@recorder.use_cassette('thredds_radarserver_metadata')
def setup(self):
"""Set up server and client for tests."""
self.server = 'http://thredds.ucar.edu/thredds/radarServer/'
self.client = RadarServer(self.server + 'nexrad/level2/IDD')
def test_stations(self):
"""Test parsing of the station information from the server."""
assert 'KFTG' in self.client.stations
def test_float_attrs(self):
"""Test parsing of values from the station information on the server."""
stn = self.client.stations['KFTG']
assert stn.elevation == 1675.0
assert stn.latitude == 39.78
assert stn.longitude == -104.53
def test_metadata(self):
"""Test parsing of variable information from server."""
assert 'Reflectivity' in self.client.variables
def test_valid_stations(self):
"""Test validating a query with valid stations."""
q = self.client.query()
q.stations('KFTG', 'KTLX')
assert self.client.validate_query(q), 'Bad validation check'
def test_invalid_stations(self):
"""Test validating a query with invalid stations."""
q = self.client.query()
q.stations('KFOO', 'KTLX')
assert not self.client.validate_query(q), 'Bad validation check'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_raw_catalog(self):
"""Test getting raw catalog bytes."""
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog_raw(q).strip()
assert cat[-10:] == b'</catalog>'
@recorder.use_cassette('thredds_radarserver_level2_single')
def test_good_query(self):
"""Test making a good request."""
dt = datetime(2015, 6, 15, 12, 0, 0)
q = self.client.query().stations('KFTG').time(dt)
cat = self.client.get_catalog(q)
assert len(cat.datasets) == 1
@recorder.use_cassette('thredds_radarserver_level3_bad')
def test_bad_query_raises(self):
"""Test that a bad query raises an error."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD')
q = client.query().stations('FTG').time(dt)
with pytest.raises(BadQueryError):
client.get_catalog(q)
@recorder.use_cassette('thredds_radarserver_level3_good')
def test_good_level3_query(self):
"""Test that a valid level 3 query succeeds."""
dt = datetime(2015, 6, 15, 12, 0, 0)
client = RadarServer(self.server + '/nexrad/level3/IDD/')
q = client.query().stations('FTG').time(dt).variables('N0Q')
cat = client.get_catalog(q)
assert len(cat.datasets) == 1