Chart lines colors/width/style and/or title/subtitle customization

[andreltr]

Hello,

Is there a way to customize the lines colors/width/style of a chart? I tried color = "red" and it did not work.
How about adding a title and/or subtitle to it?

TIA.

[serkor1]

Hi @andreltr,

The chart()-function and family is rather high-level and restricted in customization. However, some elements of the chart can be modified in its color. Below is an example for the bollinger_bands()-function,

library(cryptoQuotes)

# get BTCUSDT
# pair
BTC <- get_quote(
  ticker = "BTCUSDT",
  source = "bybit"
)

# chart with bollinger bands
# in red
chart(
  ticker = BTC,
  main   = kline(),
  sub    = list(
    volume()
  ),
  indicator = list(
    bollinger_bands(
      color = "red"
    )
  )
)

Hacking the chart()-function

The rendered chart is from {plotly}, and can be modified using the layout()-function. Below is an example where the title is changed and a subtitle is changed,

library(cryptoQuotes)

# get BTCUSDT
# pair
BTC <- get_quote(
  ticker = "BTCUSDT",
  source = "bybit"
)

# chart with bollinger bands
# and custom titles and subtitle
plotly::layout(
  p = chart(
    ticker = BTC,
    main   = kline(),
    sub    = list(
      volume()
    ),
    indicator = list(
      bollinger_bands()
    )
  ),
  title = list(
    text = "Custom Title <br> Subtitle"
  )
)

Charting with {quantmod}

Alternatively, you can use {quantmod} for charting instead of {cryptoQuotes}; the chartSeries()-function is far superior when it comes to customization of charts

^{Created on 2024-06-23 with reprex v2.1.0}