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_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)
import warnings
warnings.filterwarnings("ignore", category=matplotlib.cbook.MatplotlibDeprecationWarning)
get_ipython().magic(u'matplotlib inline')
# First we'll create an instance of RadarServer to point to the appropriate radar server access URL.
# In[2]:
# The S3 URL did not work for me, despite .edu domain
#url = 'http://thredds-aws.unidata.ucar.edu/thredds/radarServer/nexrad/level2/S3/'
#Trying motherlode URL
url = 'http://thredds.ucar.edu/thredds/radarServer/nexrad/level2/IDD/'
from siphon.radarserver import RadarServer
rs = RadarServer(url)
# Next, we'll create a new query object to help request the data. Using the chaining methods, let's ask for the latest data at the radar KLVX (Louisville, KY). We see that when the query is represented as a string, it shows the encoded URL.
# In[3]:
from datetime import datetime, timedelta
query = rs.query()
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]:
def setup(self):
self.server = 'http://thredds.ucar.edu/thredds/radarServer/'
self.client = RadarServer(self.server + 'nexrad/level2/IDD')
def test_rs_constructor_throws():
with pytest.raises(HTTPError):
RadarServer('http://thredds-aws.unidata.ucar.edu/thredds/'
'radarServer/nexrad/level2/S3/')
def test_catalog_access(self):
ds = get_radarserver_datasets('http://thredds.ucar.edu/thredds/')
url = ds['NEXRAD Level III Radar from IDD'].follow().catalog_url
assert RadarServer(url)
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_rs_constructor_throws(self):
RadarServer('http://thredds-aws.unidata.ucar.edu/thredds/'
'radarServer/nexrad/level2/S3/')
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 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_rs_constructor_throws():
"""Test that setting up radar server access raises an error for permission denied."""
with pytest.raises(HTTPError):
RadarServer('http://thredds-aws.unidata.ucar.edu/thredds/'
'radarServer/nexrad/level2/S3/')
def test_catalog_access(self):
"""Test that getting datasets returns a proper catalog."""
ds = get_radarserver_datasets('http://thredds.ucar.edu/thredds/')
url = ds['NEXRAD Level III Radar from IDD'].follow().catalog_url
assert RadarServer(url)
# -*- coding: utf-8 -*-
"""
Created on Sun Oct 13 20:06:26 2019
@author: Emmanuel
"""
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()
auth_client = APIKeyAuthClient(args.CARTO_BASE_URL, args.CARTO_API_KEY)
sql_client = SQLClient(auth_client)
copy_client = CopySQLClient(auth_client)
# Create a table suitable to receive the data
logger.info('Creating table nexrad_copy_example...')
sql_client.send("""CREATE TABLE IF NOT EXISTS nexrad_copy_example (
the_geom geometry(Geometry,4326),
reflectivity numeric
)""")
sql_client.send(
"SELECT CDB_CartodbfyTable(current_schema, 'nexrad_copy_example')")
logger.info('Done')
logger.info('Trying to connect to the THREDDS radar query service')
rs = RadarServer(
'http://thredds.ucar.edu/thredds/radarServer/nexrad/level2/IDD/')
logger.info('Quering data from the station')
query = rs.query()
query.stations('KLVX').time(datetime.utcnow())
assert rs.validate_query(query)
catalog = rs.get_catalog(query)
logger.info('Avaliable datasets: %s' % catalog.datasets)
logger.info('Using the first one')
ds = list(catalog.datasets.values())[0]
data = Dataset(ds.access_urls['CdmRemote'])
logger.info('Got the following data: %s' % data.Title)
logger.info(data.Summary)
import matplotlib
import warnings
from datetime import datetime, timedelta
from siphon.radarserver import RadarServer
from siphon.cdmr import Dataset
import numpy as np
from metpy.plots import ctables # For NWS colortable
import matplotlib.pyplot as plt
import cartopy
rs = RadarServer(
'http://thredds-aws.unidata.ucar.edu/thredds/radarServer/nexrad/level2/S3/'
)
warnings.filterwarnings("ignore",
category=matplotlib.cbook.MatplotlibDeprecationWarning)
query = rs.query()
query.stations('KLVX').time(datetime.utcnow())
rs.validate_query(query)
catalog = rs.get_catalog(query)
# 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).
ds = list(catalog.datasets.values())[0]
# ds.access_urls will be something like
#
