stable/freqtrade/plot/plotting.py

import logging
from pathlib import Path
from typing import Any, Dict, List, Optional

import pandas as pd

from freqtrade.arguments import Arguments
from frqtrade.exchange import Exchange
from freqtrade.data import history
from freqtrade.data.btanalysis import load_trades
from freqtrade.resolvers import ExchangeResolver, StrategyResolver

logger = logging.getLogger(__name__)


try:
    from plotly import tools
    from plotly.offline import plot
    import plotly.graph_objs as go
except ImportError:
    logger.exception("Module plotly not found \n Please install using `pip install plotly`")
    exit(1)


class FTPlots():

    def __init__(self, config: Dict[str, Any]):
        self._config = config
        self.exchange: Optional[Exchange] = None

        if self._config.get("live", False) or self._config.get("refresh_pairs", False):
            self.exchange = ExchangeResolver(self._config.get('exchange', {}).get('name'),
                                             self._config).exchange

        self.strategy = StrategyResolver(self._config).strategy
        if "pairs" in self._config:
            self.pairs = self._config["pairs"].split(',')
        else:
            self.pairs = self._config["exchange"]["pair_whitelist"]

        # Set timerange to use
        self.timerange = Arguments.parse_timerange(self._config["timerange"])

        self.tickers = history.load_data(
            datadir=Path(str(self._config.get("datadir"))),
            pairs=self.pairs,
            ticker_interval=self._config['ticker_interval'],
            refresh_pairs=self._config.get('refresh_pairs', False),
            timerange=self.timerange,
            exchange=self.exchange,
            live=self._config.get("live", False),
        )

        self.trades = load_trades(self._config)


def add_indicators(fig, row, indicators: List[str], data: pd.DataFrame) -> tools.make_subplots:
    """
    Generator all the indicator selected by the user for a specific row
    :param fig: Plot figure to append to
    :param row: row number for this plot
    :param indicators: List of indicators present in the dataframe
    :param data: candlestick DataFrame
    """
    for indicator in indicators:
        if indicator in data:
            # TODO: Figure out why scattergl causes problems
            scattergl = go.Scatter(
                x=data['date'],
                y=data[indicator].values,
                mode='lines',
                name=indicator
            )
            fig.append_trace(scattergl, row, 1)
        else:
            logger.info(
                'Indicator "%s" ignored. Reason: This indicator is not found '
                'in your strategy.',
                indicator
            )

    return fig


def plot_trades(fig, trades: pd.DataFrame):
    """
    Add trades to "fig"
    """
    # Trades can be empty
    if trades is not None and len(trades) > 0:
        trade_buys = go.Scatter(
            x=trades["open_time"],
            y=trades["open_rate"],
            mode='markers',
            name='trade_buy',
            marker=dict(
                symbol='square-open',
                size=11,
                line=dict(width=2),
                color='green'
            )
        )
        # Create description for sell summarizing the trade
        desc = trades.apply(lambda row: f"{round(row['profitperc'], 3)}%, {row['sell_reason']}, "
                                        f"{row['duration']}min",
                            axis=1)
        trade_sells = go.Scatter(
            x=trades["close_time"],
            y=trades["close_rate"],
            text=desc,
            mode='markers',
            name='trade_sell',
            marker=dict(
                symbol='square-open',
                size=11,
                line=dict(width=2),
                color='red'
            )
        )
        fig.append_trace(trade_buys, 1, 1)
        fig.append_trace(trade_sells, 1, 1)
    else:
        logger.warning("No trades found.")
    return fig


def generate_candlestick_graph(pair: str, data: pd.DataFrame, trades: pd.DataFrame = None,
                               indicators1: List[str] = [],
                               indicators2: List[str] = [],) -> go.Figure:
    """
    Generate the graph from the data generated by Backtesting or from DB
    Volume will always be ploted in row2, so Row 1 and 3 are to our disposal for custom indicators
    :param pair: Pair to Display on the graph
    :param data: OHLCV DataFrame containing indicators and buy/sell signals
    :param trades: All trades created
    :param indicators1: List containing Main plot indicators
    :param indicators2: List containing Sub plot indicators
    :return: None
    """

    # Define the graph
    fig = tools.make_subplots(
        rows=3,
        cols=1,
        shared_xaxes=True,
        row_width=[1, 1, 4],
        vertical_spacing=0.0001,
    )
    fig['layout'].update(title=pair)
    fig['layout']['yaxis1'].update(title='Price')
    fig['layout']['yaxis2'].update(title='Volume')
    fig['layout']['yaxis3'].update(title='Other')
    fig['layout']['xaxis']['rangeslider'].update(visible=False)

    # Common information
    candles = go.Candlestick(
        x=data.date,
        open=data.open,
        high=data.high,
        low=data.low,
        close=data.close,
        name='Price'
    )
    fig.append_trace(candles, 1, 1)

    if 'buy' in data.columns:
        df_buy = data[data['buy'] == 1]
        if len(df_buy) > 0:
            buys = go.Scatter(
                x=df_buy.date,
                y=df_buy.close,
                mode='markers',
                name='buy',
                marker=dict(
                    symbol='triangle-up-dot',
                    size=9,
                    line=dict(width=1),
                    color='green',
                )
            )
            fig.append_trace(buys, 1, 1)
        else:
            logger.warning("No buy-signals found.")

    if 'sell' in data.columns:
        df_sell = data[data['sell'] == 1]
        if len(df_sell) > 0:
            sells = go.Scatter(
                x=df_sell.date,
                y=df_sell.close,
                mode='markers',
                name='sell',
                marker=dict(
                    symbol='triangle-down-dot',
                    size=9,
                    line=dict(width=1),
                    color='red',
                )
            )
            fig.append_trace(sells, 1, 1)
        else:
            logger.warning("No sell-signals found.")

    if 'bb_lowerband' in data and 'bb_upperband' in data:
        bb_lower = go.Scattergl(
            x=data.date,
            y=data.bb_lowerband,
            name='BB lower',
            line={'color': 'rgba(255,255,255,0)'},
        )
        bb_upper = go.Scattergl(
            x=data.date,
            y=data.bb_upperband,
            name='BB upper',
            fill="tonexty",
            fillcolor="rgba(0,176,246,0.2)",
            line={'color': 'rgba(255,255,255,0)'},
        )
        fig.append_trace(bb_lower, 1, 1)
        fig.append_trace(bb_upper, 1, 1)

    # Add indicators to main plot
    fig = add_indicators(fig=fig, row=1, indicators=indicators1, data=data)

    fig = plot_trades(fig, trades)

    # Volume goes to row 2
    volume = go.Bar(
        x=data['date'],
        y=data['volume'],
        name='Volume'
    )
    fig.append_trace(volume, 2, 1)

    # Add indicators to seperate row
    fig = add_indicators(fig=fig, row=3, indicators=indicators2, data=data)

    return fig


def generate_plot_filename(pair, ticker_interval) -> str:
    """
    Generate filenames per pair/ticker_interval to be used for storing plots
    """
    pair_name = pair.replace("/", "_")
    file_name = 'freqtrade-plot-' + pair_name + '-' + ticker_interval + '.html'

    logger.info('Generate plot file for %s', pair)

    return file_name


def store_plot_file(fig, filename: str, auto_open: bool = False) -> None:
    """
    Generate a plot html file from pre populated fig plotly object
    :param fig: Plotly Figure to plot
    :param pair: Pair to plot (used as filename and Plot title)
    :param ticker_interval: Used as part of the filename
    :return: None
    """

    Path("user_data/plots").mkdir(parents=True, exist_ok=True)

    plot(fig, filename=str(Path('user_data/plots').joinpath(filename)),
         auto_open=auto_open)