handler = VSOHandler(client, start, end, timestamp, cadence,
layers)
return handler
# The next cell connects to an active Hub (see http://docs.astropy.org/en/stable/vo/samp/example_table_image.html)
# In[ ]:
client = SAMPIntegratedClient()
client.connect()
r = Receiver(client)
client.bind_receive_call("jhv.vso.load", r.receive_call)
client.bind_receive_notification("jhv.vso.load", r.receive_notification)
# ### Downloading the data
# When a message is sent over SAMP, run the following to create a new Handler with the parameters given over SAMP.
#
# A Handler object named handler will be created which offers several utility methods to create a VSOQuery and download the data.
# * __handler.createQuerySingleResult()__
# Creates a VSO-Query to only retrieve the currently show images in JHelioviewer for each active Layer
# * __handler.createQuery()__
# Creates a VSO-Query for the complete timespan visible in JHelioviewer
# * __handler.showQuery()__
# Can be used to check the query result before downloading the actual data
# * __handler.downloadData()__
# Downloads the data found by the current query
# * __handler.showData(figsize)__
# Downloads and shows the data by the current query
def receive_notification(self, private_key, sender_id, mtype, params,
extra):
self.params = params
self.sender = sender_id
self.received = True
def reset(self):
self.received = False
# Instantiate the receiver
r = Receiver(client)
# Listen for any instructions to load a table
client.bind_receive_call("table.load.votable", r.receive_call)
client.bind_receive_notification("table.load.votable", r.receive_notification)
# We now run the loop to wait for the message in a try/finally block so that if
# the program is interrupted e.g. by control-C, the client terminates
# gracefully.
print("Starting websocket...")
websocket.enableTrace(True)
ws = websocket.create_connection("ws://{}:{}/ws".format(host, port))
print("Connecting to http://{}".format(host))
webbrowser.open("http://{}:{}".format(host, port))
print("Session started")