我自定义了一个指标

VAR1 / VAR2

    dpv = bt.DivByZero(self.data.pd1, self.data.pd2, 999999999)
    self.data.dpv = dpv

使用如上方式计算
当我启动时会报如下错误：
Traceback (most recent call last):
File "D:/pythonProject/test/ztbQuant.py", line 183, in
cerebro.plot(bh)
File "C:\Users\being\anaconda3\lib\site-packages\backtrader\cerebro.py", line 989, in plot
rfig = plotter.plot(strat, figid=si * 100,
File "C:\Users\being\anaconda3\lib\site-packages\backtrader_plotting\bokeh\bokeh.py", line 511, in plot
df: pd.DataFrame = self.build_strategy_data(obj, start, end)
File "C:\Users\being\anaconda3\lib\site-packages\backtrader_plotting\bokeh\bokeh.py", line 473, in build_strategy_data
for lineidx in range(obj.size()):
AttributeError: 'DivByZero' object has no attribute 'size'

Hello,

I add a subplot on indicator plotting, but it always plotting on master windows - price and volume, not on the indicator windows.

For example, the fisherema is based on fisher, but fisherema is plotting on master windows, not fisher indicator windows.

`
self.fisher = Fisher(period=self.params.FISHER)

    self.fisherema = bt.indicators.ExponentialMovingAverage(self.fisher, period=3)
    self.fisherema.plotinfo.plotmaster = self.fisher

`
Is there any wrong here on my code?

Hello,

This is not an issue at all, and maybe I should ask Backtrader's owner, but I think Daniel is not focus on plotting, he built the system. And you are a special one on plotting when fork to bokeh and make it more beautiful and useful when backtest or live trade.

The idea is when we got the tick data, could plotting it as footprint bar chart? If you don't have time, please talk to me the right way to implement this.

Thank you very much!

Hi,
My trade strategy used 30min BNB data to send signal, and with Tick level data for trailing.
With your great btplotting tool, I am able to do live trading plotting ( together with bt-ccxt-store), but my issue is the 30min bar is not changing according to the receiving of tick data. It receives the 30min bar data for once, and then no changes... ( please see attached pic)

here is the data I use:

hist_start_date = datetime.datetime.utcnow() - datetime.timedelta(hours=249)
data = store.getdata(
    dataname='BNB/USDT',
    name="BNB/USDT",
    dtformat=('%Y-%m-%d %H:%M:%S.%f'), 
    timeframe=bt.TimeFrame.Ticks,
    fromdate=hist_start_date,
    #ohlcv_limit=99999,
    nullvalue=0.0
)
tframes = dict(
    ticks=bt.TimeFrame.Ticks,
    microseconds=bt.TimeFrame.MicroSeconds,
    seconds=bt.TimeFrame.Seconds,
    minutes=bt.TimeFrame.Minutes,
    days=bt.TimeFrame.Days,
    weekly=bt.TimeFrame.Weeks,
    monthly=bt.TimeFrame.Months
)

cerebro.resampledata(
    data,
    timeframe=tframes['minutes'],
    compression=30
) #把行情数据对象注入引擎

So my question is can btplotting modifying the 30min bar as long as it receives tick data? Many thanks!

my bokeh version is 2.3.3

So that the server can run the webapp, and the other pc on the same lan can visit it.

Hi happydasch,
When I plot, I always have following issue:

Could you please help? Many thanks!

` data = store.getdata(
dataname='%s/%s' % (COIN_TARGET, COIN_REFER),
name='%s%s' % (COIN_TARGET, COIN_REFER),
timeframe=bt.TimeFrame.Minutes,
fromdate=hist_start_date,
compression=1,
ohlcv_limit=99999,
drop_newest = True,
nullvalue=0.0
)

    cerebro.adddata(data)
    cerebro.replaydata(data,timeframe=bt.TimeFrame.Minutes,compression=30,name='30_min')`

Actually, the whole folder "templates" is missing.

Traceback (most recent call last):
File "main.py", line 494, in
start_test()
File "main.py", line 470, in start_test
cerebro.plot(p)
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/backtrader/cerebro.py", line 989, in plot
rfig = plotter.plot(strat, figid=si * 100,
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting-0.1.0-py3.8.egg/btplotting/app.py", line 563, in plot
self.create_figurepage(
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting-0.1.0-py3.8.egg/btplotting/app.py", line 319, in create_figurepage
self._blueprint_strategy(figid, filter)
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting-0.1.0-py3.8.egg/btplotting/app.py", line 203, in _blueprint_strategy
figure = Figure(
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting-0.1.0-py3.8.egg/btplotting/figure.py", line 245, in init
self._init_figure()
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting-0.1.0-py3.8.egg/btplotting/figure.py", line 335, in _init_figure
formatter_code = pkgutil.get_data(
File "/usr/lib/python3.8/pkgutil.py", line 637, in get_data
return loader.get_data(resource_name)
File "", line 972, in get_data
FileNotFoundError: [Errno 2] No such file or directory: '/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting-0.1.0-py3.8.egg/btplotting/templates/js/tick_formatter.js'

I tried to use live demo (both 2 samples), and it runs for a short while (2-3 minutes), then this error happens.

I don't think that this error is from indicators, but the debug message looks like relatived indicator issues. I wonder because the sample runs with mature indicators, not a new one.

Traceback (most recent call last): File "/home/bt-learning/data-live.py", line 101, in <module> cerebro, strat = _run_resampler(data_timeframe=bt.TimeFrame.Ticks, File "/home/bt-learning/data-live.py", line 94, in _run_resampler res = cerebro.run() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/cerebro.py", line 1127, in run runstrat = self.runstrategies(iterstrat) File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/cerebro.py", line 1298, in runstrategies self._runnext(runstrats) File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/cerebro.py", line 1630, in _runnext strat._next() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/strategy.py", line 347, in _next super(Strategy, self)._next() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/lineiterator.py", line 263, in _next indicator._next() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/lineiterator.py", line 263, in _next indicator._next() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/linebuffer.py", line 621, in _next self.nextstart() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/lineroot.py", line 144, in nextstart self.next() File "/home/bt-learning/venv/lib/python3.8/site-packages/backtrader/linebuffer.py", line 744, in next self[0] = self.operation(self.a[0], self.b[0])

Or is there any misunderstood here?

Thank you very much!

When you specify _skipnan in your lineinfo it does not skip the nan's i.e. it continues to plot the line. It seems it is due to the code at th end of clock.py get_data() where interpolate() is called for the lines in the "skipnan" list. this might be a problem only when you also have fill speficied for your skipnan lines.

I think it should do the opposite for _skipnan lines and NOT interpolate anything. I have changed the code like this and it now skips the nan's (even for lines where fills are also specified):

Current code in get_data():
if name in skipnan:
df[name] = df[name].interpolate()
elif name not in fillnan:
df[name] = df[name].fillna(method='ffill')

Modified code that works for me:
if name in skipnan:
pass
elif name not in fillnan:
df[name] = df[name].fillna(method='ffill')

PS: if gong to this this then could just as well call ffill() here instead of the deprecated fillna(). It would then get rid of the current "FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead. df[name] = df[name].fillna(method='ffill')" runtime warning as well:

if name in skipnan:
pass
elif name not in fillnan:
df[name] = df[name].ffill()

I keep getting this error. "500: Internal Server Error"

I have done installing btplotting and calling it using:
cerebro.addanalyzer(BacktraderPlottingLive, address="*", port=7692)
I've also tried different port numbers
also googling didnt help.

This plot in a cell.

I'm running a backtest with a period of 10 years and the graphs are just enormous.
How to resize/scale them properly ?

The last candle is missing

Trying to plot the built-in indicator from backtrader PSAR and getting an error.

self.psar[i] = bt.ind.PSAR(self.datas[i],period=2,af=0.02,afmax=0.2) # parabolic sar

Error : `Exception: Sorry, unsupported marker: ".". Please report to GitHub.``

StackTrace :

File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\app.py", line 567, in plot
filter=filter)
File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\app.py", line 318, in create_figurepage
self._blueprint_strategy(figid, filter)
File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\app.py", line 209, in _blueprint_strategy
figure.plot(c)
File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\figure.py", line 671, in plot
self.plot_indicator(obj)
File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\figure.py", line 855, in plot_indicator
self._plot_indicator_observer(obj)
File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\figure.py", line 477, in _plot_indicator_observer
+ f' "{marker}". Please report to GitHub.')
Exception: Sorry, unsupported marker: ".". Please report to GitHub.

I have 86 symbols which symbol has 8640 rows of kline data(using bt.feeds.PandasData)
When i run backtest, I got this warning:
C:\Users\63036\Anaconda3\lib\site-packages\btplotting\app.py:514: PerformanceWarning: DataFrame is highly fragmented. This is usually the result of calling frame.insertmany times, which has poor performance. Consider joining all columns at once using pd.concat(axis=1) instead. To get a de-fragmented frame, usenewframe = frame.copy()df[source_id] = new_line C:\Users\63036\Anaconda3\lib\site-packages\btplotting\app.py:524: PerformanceWarning: DataFrame is highly fragmented. This is usually the result of callingframe.insertmany times, which has poor performance. Consider joining all columns at once using pd.concat(axis=1) instead. To get a de-fragmented frame, usenewframe = frame.copy()df['index'] = indices C:\Users\63036\Anaconda3\lib\site-packages\btplotting\app.py:525: PerformanceWarning: DataFrame is highly fragmented. This is usually the result of callingframe.insertmany times, which has poor performance. Consider joining all columns at once using pd.concat(axis=1) instead. To get a de-fragmented frame, usenewframe = frame.copy()df['datetime'] = clkidx

I am trying to plot a custom indicator. The lines dont show up.. For eg, can you try plotting this zigzag indicator coded by the creator of backtrader (https://community.backtrader.com/topic/773/zigzag-indicator). You will see that the lines show up intermittently. If you plot using the original backtrader plot, they work as expected
Here is the screenshot

If you see above, only in few places do you see the zigzag lines.. But look at the original plot below.. THis is how it should be
Here is the original plot

I also tried drawing horizontal lines.. They work perfectly.. So the issue is specific to bars connecting highs and lows

If I run a strategy live with the defaults and go to localhost:80, it works

self.cerebro.addanalyzer(BacktraderPlottingLive,barup='green')#, barup='green', volume=False, lookback=200, address="*", port=8889)

However if I want to change the port and work on any address, it doesn't. Work before the address argument was added.

self.cerebro.addanalyzer(BacktraderPlottingLive,barup='green',volume=False, address="*", port=5001)

I get error

Open browser at: http://localhost:5001
INFO:bokeh.server.server:Starting Bokeh server version 2.3.0 (running on Tornado 6.1)
Exception in thread Thread-13:
Traceback (most recent call last):
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\threading.py", line 926, in _bootstrap_inner
    self.run()
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\btplotting\analyzers\plot.py", line 59, in _t_server
    self._webapp.start(loop)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\btplotting\webapp.py", line 53, in start
    address=self._address, autostart=self._autostart)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\btplotting\webapp.py", line 82, in _run_server
    server = Server(apps, address=address, port=port, allow_websocket_origin=[address], io_loop=ioloop)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\bokeh\server\server.py", line 395, in __init__
    sockets, self._port = bind_sockets(opts.address, opts.port)
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\bokeh\server\util.py", line 60, in bind_sockets
    ss = netutil.bind_sockets(port=port or 0, address=address)
  File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\tornado\netutil.py", line 104, in bind_sockets
    socket.getaddrinfo(address, port, family, socket.SOCK_STREAM, 0, flags),
  File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\socket.py", line 752, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11001] getaddrinfo failed

New user, not sure what went wrong.

But by comparing below chart

versus the orignal from backtrader

Something regarding the chart scaling is having a problem.

Repo steps:
repo.zip

unzip repo.zip
cd repo
./source.py --plot

Backtest successfully completes but won't plot.
How to reproduce

1. Using ibstore
2. Have multi data (2 is enough)
3. Have strategy that uses the psar indicator
4. Backtest or run live

Full stacktrace:
Traceback (most recent call last): File "C:\Users\Jacob\Desktop\Epicrise\cerebroHelper.py", line 262, in cerebro_helper_backtest self.cerebro.plot(p) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\backtrader\cerebro.py", line 991, in plot start=start, end=end, use=use) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\app.py", line 567, in plot filter=filter) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\app.py", line 318, in create_figurepage self._blueprint_strategy(figid, filter) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\app.py", line 207, in _blueprint_strategy figure.plot(parent) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\figure.py", line 649, in plot self.plot_observer(obj) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\figure.py", line 828, in plot_observer self._plot_indicator_observer(obj) File "C:\Users\Jacob\AppData\Roaming\Python\Python37\site-packages\btplotting\figure.py", line 456, in _plot_indicator_observer + f' "{marker}". Please report to GitHub.') Exception: Sorry, unsupported marker: "8". Please report to GitHub.

when changing the filter data, the layout is totally wrong.
in the picture above, I added the secondary data feed and when I tried to see the secondary data feed.

I am looking at it but, it too many things are unclear..., if any clue?

The live plotting is not worked fine.
It's easy to reproduce. just run in "demos/date_live.py" or "demos/data_multi_live.py".
6~7 months ago, it worked. I don't know why....

First of all, I thank you for sharing a good source :)

It shows too much information that only one tooltip should be shown when hovered.

Hi,
in my strategy code I had a long line of code, something like this:
if self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and self.position.size > 0 and
and due this tabs "source code" just crashes all html file

after i styled my strategy code i got the correct display of the toolbar. BINGO :)

report error when I run https://github.com/happydasch/btplotting/blob/master/demos/optimization.py

C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
C:\Python311\Lib\site-packages\btplotting\clock.py:316: FutureWarning: Series.fillna with 'method' is deprecated and will raise in a future version. Use obj.ffill() or obj.bfill() instead.
  df[name] = df[name].fillna(method='ffill')
Uncaught exception GET / (::1)
HTTPServerRequest(protocol='http', host='localhost:81', method='GET', uri='/', version='HTTP/1.1', remote_ip='::1')
Traceback (most recent call last):
  File "C:\Python311\Lib\site-packages\tornado\web.py", line 1786, in _execute
    result = await result
             ^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\bokeh\server\views\doc_handler.py", line 54, in get
    session = await self.get_session()
              ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\bokeh\server\views\session_handler.py", line 145, in get_session
    session = await self.application_context.create_session_if_needed(session_id, self.request, token)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\bokeh\server\contexts.py", line 240, in create_session_if_needed
    self._application.initialize_document(doc)
  File "C:\Python311\Lib\site-packages\bokeh\application\application.py", line 190, in initialize_document
    h.modify_document(doc)
  File "C:\Python311\Lib\site-packages\bokeh\application\handlers\function.py", line 140, in modify_document
    self._func(doc)
  File "C:\Python311\Lib\site-packages\btplotting\webapp.py", line 54, in make_document
    model = self._model_factory_fnc(doc)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\btplotting\optbrowser.py", line 130, in build_optresult_model
    [selector, _get_model(selector_cds, 0)],
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\btplotting\optbrowser.py", line 103, in _get_model
    return self._app.plot_optmodel(
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\btplotting\app.py", line 511, in plot_optmodel
    return self.generate_bokeh_model(0)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\btplotting\app.py", line 343, in generate_bokeh_model
    tab_panels = self.generate_bokeh_model_tab_panels()
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\btplotting\app.py", line 413, in generate_bokeh_model_tab_panels
    g = gridplot(plot_figures,
        ^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\bokeh\layouts.py", line 333, in gridplot
    toolbar = Toolbar(
              ^^^^^^^^
TypeError: bokeh.models.tools.Toolbar() got multiple values for keyword argument 'logo'
500 GET / (::1) 715.09ms

How can we set what's the default value of this dropdown? Right now it defaults to the first dataset and I would want to see all the datas at once (Strategy option).

when I run btplotting on the mac, I am having this issue. shall i uninstall backtrader_plotting first? when i tried to uninstall backtrader_plotting , it was not founded. please advise me on how to fix this issue.

Hi @happydasch ,

After make a fresh install computer. I got the error when plotting live, and stuck in find what is wrong. The plotting live got the error on browser console:

[bokeh]: could not set init ranges

and result is nothing plotting at all.

It throws an exception also:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/local/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/home/hq/.venv/lib/python3.8/site-packages/btplotting/live/datahandler.py", line 217, in _t_thread
    data = self._app.generate_data(
  File "/home/hq/.venv/lib/python3.8/site-packages/btplotting/app.py", line 451, in generate_data
    clock_values[smallest] = generator.get_clock(
  File "/home/hq/.venv/lib/python3.8/site-packages/btplotting/clock.py", line 91, in get_clock
    arr = get_slice_with_end(arr, start, end)
  File "/home/hq/.venv/lib/python3.8/site-packages/btplotting/clock.py", line 14, in get_slice_with_end
    slice = list(data)[start:end] + [data[end]]
TypeError: slice indices must be integers or None or have an __index__ method

The steps to make install as:

1. Install backtrader
2. Install btplotting
3. Install another packages: websockets, TA-Lib, requests, schedule, ujson

Here is my pip freeze:

backtrader==1.9.76.123
bokeh==2.4.3
btplotting @ git+https://github.com/happydasch/btplotting@512780f8ab71395fef3667e872deca3a8a2f2e9a
certifi==2022.6.15
charset-normalizer==2.1.0
cycler==0.11.0
fonttools==4.33.3
idna==3.3
Jinja2==3.1.2
kiwisolver==1.4.3
MarkupSafe==2.1.1
matplotlib==3.5.2
numpy==1.23.0
packaging==21.3
pandas==1.4.3
Pillow==9.2.0
pyparsing==3.0.9
python-dateutil==2.8.2
pytz==2022.1
PyYAML==6.0
requests==2.28.1
schedule==1.1.0
six==1.16.0
TA-Lib==0.4.24
tornado==6.2
typing_extensions==4.3.0
ujson==5.4.0
urllib3==1.26.9
websockets==10.3

Traceback (most recent call last):
File "main.py", line 19, in
from btplotting import BacktraderPlotting
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting/init.py", line 2, in
from .analyzers import LivePlotAnalyzer as BacktraderPlottingLive
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting/analyzers/init.py", line 1, in
from .plot import LivePlotAnalyzer
File "/home/user/PycharmProjects/backtrader/venv/lib/python3.8/site-packages/btplotting/analyzers/plot.py", line 13, in
from ..live.client import LiveClient
ModuleNotFoundError: No module named 'btplotting.live'

@happydasch

I tried the optimization sample file in : https://github.com/happydasch/btplotting/blob/master/demos/optimization.py and it doesn't work. I get error, There is no current event loop in thread. See below images on error message.

Hello. Firstly, thanks for bringing such an amazing library to plot the graph!

I am currently using it to plot the live data.
However, the bar size looks very small in the graph. I think it's because the y-axis starts at 0.
I wonder is there any param I can set such that the y-axis can be auto-scaled?

Thank you in advance.

Running the simple example from the deoms (demos/optimization.py, just changes the port), produces the following error:

Open browser at: http://localhost:8087
ERROR:tornado.application:Uncaught exception GET / (::1)
HTTPServerRequest(protocol='http', host='localhost:8087', method='GET', uri='/', version='HTTP/1.1', remote_ip='::1')
Traceback (most recent call last):
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\tornado\web.py", line 1592, in _execute
    result = yield result
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\tornado\gen.py", line 1133, in run
    value = future.result()
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\bokeh\server\views\doc_handler.py", line 52, in get
    session = await self.get_session()
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\bokeh\server\views\session_handler.py", line 120, in get_session
    session = await self.application_context.create_session_if_needed(session_id, self.request, token)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\bokeh\server\contexts.py", line 218, in create_session_if_needed
    self._application.initialize_document(doc)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\bokeh\application\application.py", line 171, in initialize_document
    h.modify_document(doc)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\bokeh\application\handlers\function.py", line 132, in modify_document
    self._func(doc)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\webapp.py", line 49, in make_document
    model = self._model_factory_fnc(doc)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\optbrowser.py", line 113, in build_optresult_model
    [selector, _get_model(selector_cds, 0)],
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\optbrowser.py", line 99, in _get_model
    self._optresults[selected][0])
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\app.py", line 543, in plot_optmodel
    return self.generate_model(0)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\app.py", line 357, in generate_model
    panels.append(tab.get_panel())
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\tab.py", line 35, in get_panel
    child, title = self._get_panel()
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\tabs\metadata.py", line 138, in _get_panel
    self.content = self._create_content()
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\tabs\metadata.py", line 132, in _create_content
    [self._get_metadata_info()]
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\tabs\metadata.py", line 105, in _get_metadata_info
    acolumns = self._get_metadata_columns(self._figurepage.strategy)
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\tabs\metadata.py", line 99, in _get_metadata_columns
    acolumns.extend(self._get_strategy(strategy))
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\tabs\metadata.py", line 50, in _get_strategy
    childs.append(self._get_title(f'Strategy: {obj2label(strategy)}'))
  File "...\AppData\Local\Programs\Python\Python37\lib\site-packages\btplotting\helper\label.py", line 25, in obj2label
    raise RuntimeError(f'Unsupported type: {obj.__class__}')
RuntimeError: Unsupported type: <class 'NoneType'>
ERROR:tornado.access:500 GET / (::1) 171.54ms

When trying to set optreturn=False I get:

ERROR:bokeh.server.views.ws:Refusing websocket connection from Origin 'http://localhost:8081';                       use --allow-websocket-origin=localhost:8081 or set BOKEH_ALLOW_WS_ORIGIN=localhost:8081 to permit this; currently we allow origins {'localhost:80'}
WARNING:tornado.access:403 GET /ws (::1) 1.00ms

When I use 1 minute timeframe of 3 month data, the plotting result is not very responsive on the web page. The page is very lagging, and often took a long time to load the page. is there any way to improve the performance? i think 3 month data shall not be considerred large for plotting.

Hi

I got the issue as following:

from bokeh.models.widgets import Panel, Tabs
ImportError: cannot import name 'Panel' from 'bokeh.models.widgets'

bokeh.__version__
'3.1.0'

Could you tell me which bokeh version you are using ?

Thanks!

Uncaught exception GET / (::1) HTTPServerRequest(protocol='http', host='localhost', method='GET', uri='/', version='HTTP/1.1', remote_ip='::1') Traceback (most recent call last): File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\tornado\web.py", line 1713, in _execute result = await result File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\server\views\doc_handler.py", line 52, in get session = await self.get_session() File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\server\views\session_handler.py", line 120, in get_session session = await self.application_context.create_session_if_needed(session_id, self.request, token) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\server\contexts.py", line 218, in create_session_if_needed self._application.initialize_document(doc) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\application\application.py", line 171, in initialize_document h.modify_document(doc) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\application\handlers\function.py", line 132, in modify_document self._func(doc) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\webapp.py", line 54, in make_document model = self._model_factory_fnc(doc) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\analyzers\plot.py", line 64, in _app_cb_build_root_model client = LiveClient(doc, File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\live\client.py", line 56, in __init__ self.refreshmodel() File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\live\client.py", line 255, in refreshmodel self._datahandler = LiveDataHandler(self) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\live\datahandler.py", line 22, in __init__ self._fill() File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\live\datahandler.py", line 96, in _fill df = app.get_data(figid=figid, back=lookback) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\app.py", line 448, in get_data dt_idx = data_clock.get_dt_list(startidx, endidx) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\clock.py", line 214, in get_dt_list val = bt.num2date(val, tz=None if not localized else self._tz) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\backtrader\utils\dateintern.py", line 165, in num2date ix = int(x) ValueError: cannot convert float NaN to integer
and
WARNING:bokeh.server.views.ws:Failed sending message as connection was closed Exception in callback functools.partial(<bound method IOLoop._discard_future_result of <tornado.platform.asyncio.AsyncIOMainLoop object at 0x000001578A5C6A00>>, <Task finished name='Task-10353' coro=<_needs_document_lock.<locals>._needs_document_lock_wrapper() done, defined at C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\server\session.py:51> exception=KeyError('index')>) Traceback (most recent call last): File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\tornado\ioloop.py", line 740, in _run_callback ret = callback() File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\tornado\ioloop.py", line 764, in _discard_future_result future.result() File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\bokeh\server\session.py", line 71, in _needs_document_lock_wrapper result = await result File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\tornado\gen.py", line 216, in wrapper result = ctx_run(func, *args, **kwargs) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\live\datahandler.py", line 42, in _cb_push p_data, s_data = fp.get_cds_patchdata_from_series(idx, patch) File "C:\Users\Four\AppData\Local\Programs\Python\Python39\lib\site-packages\btplotting\cds.py", line 166, in get_cds_patchdata_from_series idx_map = {d: idx for idx, d in enumerate(self._cds.data['index'])} KeyError: 'index'
someone help me fix it

The buy/sell arrows are so far away from the candlesticks.
This is different from the demo where the buy/sell arrows are directly above or below the candlesticks.
Is there anything I can do to get arrows style same as in demo? Thanks

In Jupyter you may try to plot to single browser tab with iplot=False:

plot = btplotting.BacktraderPlotting()
cerebro.plot(plot, iplot=False)

You may encounters TypeError: <class '__main__.YourStrategyClass'> is a built-in class error.

Then try this:

plot = btplotting.BacktraderPlotting()
plot.tabs.remove(btplotting.tabs.SourceTab)
cerebro.plot(plot, iplot=False)

Firstly - what an absolutely great library! Does exactly what I was looking for and more.

One slight niggle is that I seem to see all the Bokeh Debug messages at the command line output. Any easy way to turn these off would be great. I had a go myself but failed.

I wanna embed btplotting in custom web, Can I save the html file?

First, great work, love this package.

I'm having what I think is a combined axis problem.
Running the blackly_single demo in jupyter, the volume scale is crushing the price scale to a straight line.
How can I make the 2 axes scale independently?

Reason

Web pages are very slow when zooming with long bars (greater than 3000).

I use pyecharts to draw the same bars, it's smooth.

Thanks

I would like to implement it, but I don't understand how it works yet.

Finally, thank you for your selfless dedication. Hope to hear from you.

Is it possible to customize the port number used for the web app? Currently it seems to be hardcoded to port 80.

I've tried:
BacktraderPlottingLive.http_port=8080

when running the optimization.py locally, the page shows up correctly onload, but will break if click on different optimization runs.
(https://github.com/happydasch/btplotting/blob/master/demos/optimization.py)
(I did changed the port from default to 3000 by browser = BacktraderPlottingOptBrowser(btp, result, port=3000),
shouldn't matter I think?)

initial load screenshot:

broken state screenshot:

there is an error thrown in the brower dev console:

Hi, I always receive an Unsupported ColumnDataType triggered by the _get_formatter() function within datable.py.
I've fixed moving from the old definition to something like ctype.name == ColummDataType.XXX.name.

I hope this could help you

Best regards

This is a great project btw and the work appreciated.

When using btplotting for online data visualization, a 500: Internal Server Error error is reported, and the error code is as follows:

HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/', version='HTTP/1.1', remote_ip='::1')
Traceback (most recent call last):
File "C:\Python\python3.8.9\lib\site-packages\tornado\web.py", line 1786, in _execute
result = await result
File "C:\Python\python3.8.9\lib\site-packages\bokeh-3.2.0.dev1-py3.8.egg\bokeh\server\views\doc_handler.py", line 54, in get
session = await self.get_session()
File "C:\Python\python3.8.9\lib\site-packages\bokeh-3.2.0.dev1-py3.8.egg\bokeh\server\views\session_handler.py", line 145, in get_session
session = await self.application_context.create_session_if_needed(session_id, self.request, token)
File "C:\Python\python3.8.9\lib\site-packages\bokeh-3.2.0.dev1-py3.8.egg\bokeh\server\contexts.py", line 242, in create_session_if_needed
self._application.initialize_document(doc)
File "C:\Python\python3.8.9\lib\site-packages\bokeh-3.2.0.dev1-py3.8.egg\bokeh\application\application.py", line 192, in initialize_document
h.modify_document(doc)
File "C:\Python\python3.8.9\lib\site-packages\bokeh-3.2.0.dev1-py3.8.egg\bokeh\application\handlers\function.py", line 142, in modify_document
self._func(doc)
File "C:\Python\python3.8.9\lib\site-packages\btplotting-0.2.1-py3.8.egg\btplotting\webapp.py", line 54, in make_document
model = self._model_factory_fnc(doc)
File "C:\Python\python3.8.9\lib\site-packages\btplotting-0.2.1-py3.8.egg\btplotting\analyzers\plot.py", line 64, in _app_cb_build_root_model
client = LiveClient(doc,
File "C:\Python\python3.8.9\lib\site-packages\btplotting-0.2.1-py3.8.egg\btplotting\live\client.py", line 55, in init
self.model, self._refresh_fnc = self._createmodel()
File "C:\Python\python3.8.9\lib\site-packages\btplotting-0.2.1-py3.8.egg\btplotting\live\client.py", line 177, in _createmodel
tabs = Tabs(
File "C:\Python\python3.8.9\lib\site-packages\bokeh-3.2.0.dev1-py3.8.egg\bokeh\model\model.py", line 97, in new
raise ValueError("'id' cannot be used together with property initializers")
ValueError: 'id' cannot be used together with property initializers

Tried python 3.8.9, 3.8.6, but it didn't work
Use btplotting version 0.2.1