The last candle is missing

[helloboy110]

The last candle is missing

[happydasch]

can you provide more details?

[helloboy110]

run demos/blackly_single.py


bokeh plot:

[happydasch]

The last candle is not complete so it will not be generated. Will look into changing this behaviour.

[zgpnuaa]

+1.
The first candlestick is not displayed, and the time of all other candlesticks is reduced by one period (1 minute) when timeframe is 1min.
My code as follow:

feed = SimpleLivingData(exchange=exchange, symbol=symbol, timeframe=bt.TimeFrame.Minutes, compression=1, backfill_start=True, backfill_from=data_start)

cerebro.adddata(feed, name=symbol)
cerebro.addanalyzer(BacktraderPlottingLive, barup='red',bardown='green', port=8065,lookback=99, scheme=Tradimo(hovertool_timeformat='%F %R:%S')) 

data_start as follow:

The first candlestick displayed is actually the second data in the dataframe.But time is reduced by 1 minute.

The last displayed candlestick is actually the last data entry in the dataframe, but the time has been reduced by 1 minute.

[zgpnuaa]

It does not draw the first candlestick whether it is in live trading or backtesting. Instead, it starts drawing from the second candlestick. The overall time remains unchanged, meaning that the chart starts from the second candlestick but with time starting from the first candlestick's time. This results in all candlesticks having incorrect timestamps, as there is a shift of one period in time. For example, when plotting 30-minute candlesticks, the OHLC data displayed at 10:00 actually corresponds to 10:30 OHLC data and so on.

2023/06/19 10:00:00, 1_prenext: open:271.758-high:271.758-low:271.168-close:271.258
2023/06/19 10:30:00, 2_prenext: open:271.228-high:271.768-low:268.408-close:268.878
2023/06/19 11:00:00, 3_prenext: open:268.898-high:270.458-low:268.898-close:269.238
2023/06/19 11:30:00, 4_prenext: open:269.238-high:269.238-low:266.868-close:268.158

[qsyao]

same question, expecting a nice fix ! @happydasch

[Balzac1799]

@zgpnuaa @qsyao @happydasch It seems that change this line to if c_start and c_start >= t_end can fix the missing first candle error