Candlestick chart of an index's prices

Plots the daily open, high, low and close, in index points, with a line through the close, its moving averages, date range buttons and a range slider. Underneath, smaller charts show the trading volume, when the history has any, and the drawdown: how far the index is below its all-time high so far. A click on a legend entry hides or shows that line.

The vertical axes follow the days in view: zoomed in, each runs from the lowest to the highest value of those days, so a week's candles fill the chart instead of lying flat on an axis that reaches back to the start of the history. The Linear and Log buttons switch the axis of the prices; on the log axis equal distances are equal percentages, which suits the whole history.

Usage

plot_timeseries(
  history,
  mode = "light",
  averages = c(50, 200),
  show_drawdown = TRUE
)

Arguments

history

Price history of one index from get_history(). The averages and the drawdown use the whole history, so pass all of it and zoom with the range buttons.

mode

"light" (the default) or "dark", to suit a light or dark page.

averages

Days of the moving averages to draw (see moving_average()), or NULL for none.

show_drawdown

TRUE to add the drawdown chart (see drawdown()).

Value

A plotly object.

Examples

if (FALSE) { # interactive()
spx <- get_history("S&P 500", as.Date("1950-01-01"))
plot_timeseries(spx)
# shorter averages, and no drawdown chart
plot_timeseries(spx, averages = c(20, 100), show_drawdown = FALSE)
}