[BUG] sub chart sync issue

[junlong92]

Expected Behavior

The vertical labels are shifted due to the large difference in values between the price chart and the subchart

import pandas as pd import ccxt from lightweight_charts import Chart import talib

def rsi(df, period: int = 14): return pd.DataFrame( {"time": df["time"], "RSI": talib.RSI(df["close"], timeperiod=period)} )

if name == 'main': # Initialize the ccxt exchange (for example, Binance) exchange = ccxt.binance() # Change this to another exchange if necessary

# Fetch OHLCV data (for example, for BTC/USDT on a 1-hour timeframe)
ohlcv = exchange.fetch_ohlcv('BTC/USDT', timeframe='1h', limit=1000)

# Convert the data to a pandas DataFrame
ohlcv_df = pd.DataFrame(ohlcv, columns=['time', 'open', 'high', 'low', 'close', 'volume'])

# Convert the time from timestamp to a readable datetime format
ohlcv_df['time'] = pd.to_datetime(ohlcv_df['time'], unit='ms')

# Initialize the chart
chart = Chart(inner_height=0.7)
chart.time_scale(visible=True)  # Hide the time scale of the main chart
chart.layout(font_size=11)

# Create the RSI subchart
rsi_chart = chart.create_subchart(height=0.3, width=1, sync=True)
rsi_chart.layout(font_size=11)
rsi_df = rsi(ohlcv_df)  # Get RSI data
rsi_line = rsi_chart.create_line("RSI")  # Create line for RSI
rsi_line.set(rsi_df)  # Set RSI data on the subchart

chart.legend(True, font_size=14) # Main chart
rsi_chart.legend(True) # Sub-chart

# Set the chart data (main chart)
chart.set(ohlcv_df)

# Show the chart
chart.show(block=True)

Environment

- OS:win 11
- Library:2.1

[HEUDavid]

+1 I'd like to know how to go about resolving this issue.

[HEUDavid]

    chart = Chart(inner_width=1, inner_height=0.7, debug=True)
    chart.time_scale(visible=False)
    chart.price_scale(minimum_width=100)

    chart2 = chart.create_subchart(width=1, height=0.3, sync=True)
    chart2.price_scale(minimum_width=100)
    line_rsi = chart2.create_line('rsi')

func price_scale(minimum_width=100) Setting minimum width on both sides solved my issue 💯

[junlong92]

    chart = Chart(inner_width=1, inner_height=0.7, debug=True)
    chart.time_scale(visible=False)
    chart.price_scale(minimum_width=100)

    chart2 = chart.create_subchart(width=1, height=0.3, sync=True)
    chart2.price_scale(minimum_width=100)
    line_rsi = chart2.create_line('rsi')

func price_scale(minimum_width=100) Setting minimum width on both sides solved my issue 💯

Thanks a lot

[germangar]

Thanks!! This has been bothering me for a long time!