Я пытаюсь экспортировать гистограмму на графике в файл SVG. Это работает хорошо, пока я не попытаюсь обработать большое количество точек данных. Приведенный ниже код работает для 1000000 моделируемых точек данных, но разбивается на 10000000 точек.
import plotly.graph_objs as go
import plotly.io as pio
import numpy as np
# simulate small input data: this works
# data_1 = list(np.random.randint(0, 2**63, 1_000_000))
# data_2 = list(np.random.randint(0, 2**63, 1_000_000))
# simulate larger input data: this works
data_1 = list(np.random.randint(0, 2**63, 10_000_000))
data_2 = list(np.random.randint(0, 2**63, 10_000_000))
# assemble two histograms and plot them into one figure
g1 = go.Histogram(x=data_1, opacity=0.75)
g2 = go.Histogram(x=data_2, opacity=0.75)
data = [g1, g2]
figure = go.Figure(data=data)
# write the plot as html, this works
plotly.offline.plot(figure, auto_open=True, filename="/tmp/foo.html")
# writing the plot as svg (or png) file doesn't work
pio.write_image(figure, "/tmp/foo.svg")
При запуске с 10000000 смоделированных точек данных я получаю следующее сообщение об ошибке (полная трассировка стека ниже):
ValueError:
For some reason plotly.py was unable to communicate with the
local orca server process, even though the server process seems to be running.
Проблема в том, что с моим настоящим набором данных я не могу просто уменьшить количество точек. Кто-нибудь знает, что здесь происходит и как это исправить?
Это немного похоже на тайм-аут сервера orca, потому что вычисление занимает слишком много времени, но длительность тайм-аута для сервера (по умолчанию) установлена на None, т.е. нет тайм-аута. Я также пытался изменить порт сервера (как предложено здесь ), но это не помогло.
Дополнительная информация
Я использую график 3.3.0 и orca 1.1.1. Моя конфигурация orca (print(pio.orca.config)) выглядит так:
orca configuration
------------------
executable: orca
port: None
timeout: None
default_width: None
default_height: None
default_scale: 1
default_format: png
mathjax: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js
topojson: None
mapbox_access_token: None
constants
---------
plotlyjs: /home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/plotly/package_data/plotly.min.js
config_file: /home/m00am/.plotly/.orca
Полная трассировка стека
Traceback (most recent call last):
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 356, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1065, in _send_output
self.send(chunk)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 986, in send
self.sock.sendall(data)
ConnectionResetError: [Errno 104] Connection reset by peer
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/adapters.py", line 423, in send
timeout=timeout
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 649, in urlopen
_stacktrace=sys.exc_info()[2])
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/util/retry.py", line 347, in increment
raise six.reraise(type(error), error, _stacktrace)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/packages/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 356, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 1065, in _send_output
self.send(chunk)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/http/client.py", line 986, in send
self.sock.sendall(data)
requests.packages.urllib3.exceptions.ProtocolError: ('Connection aborted.', ConnectionResetError(104, 'Connection reset by peer'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/plotly/io/_orca.py", line 1305, in to_image
height=height)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/retrying.py", line 49, in wrapped_f
return Retrying(*dargs, **dkw).call(f, *args, **kw)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/retrying.py", line 212, in call
raise attempt.get()
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/retrying.py", line 247, in get
six.reraise(self.value[0], self.value[1], self.value[2])
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/retrying.py", line 200, in call
attempt = Attempt(fn(*args, **kwargs), attempt_number, False)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/plotly/io/_orca.py", line 1201, in request_image_with_retrying
response = requests.post(server_url + '/', data=json_str)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/api.py", line 110, in post
return request('post', url, data=data, json=json, **kwargs)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/api.py", line 56, in request
return session.request(method=method, url=url, **kwargs)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/sessions.py", line 488, in request
resp = self.send(prep, **send_kwargs)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/sessions.py", line 609, in send
r = adapter.send(request, **kwargs)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/requests/adapters.py", line 473, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', ConnectionResetError(104, 'Connection reset by peer'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "bar.py", line 107, in <module>
distribution_comparison()
File "bar.py", line 97, in distribution_comparison
pio.write_image(figure, "/tmp/foo.png")
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/plotly/io/_orca.py", line 1492, in write_image
validate=validate)
File "/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/plotly/io/_orca.py", line 1322, in to_image
""".format(info=status_str))
ValueError:
For some reason plotly.py was unable to communicate with the
local orca server process, even though the server process seems to be running.
Please review the process and connection information below:
orca status
-----------
state: running
executable: /home/m00am/miniconda3/envs/my_conda_env/bin/orca
version: 1.1.1
port: 40887
pid: 3277
command: ['/home/m00am/miniconda3/envs/my_conda_env/bin/orca', 'serve', '-p', '40887', '--plotly', '/home/m00am/miniconda3/envs/my_conda_env/lib/python3.6/site-packages/plotly/package_data/plotly.min.js', '--graph-only', '--mathjax', 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js']