82 lines
2.0 KiB
R
82 lines
2.0 KiB
R
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generate_random_walk <- function(num_steps = 90) {
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start_date <- as.POSIXct(as.integer(Sys.time()) * runif(1), origin = "1970-01-01")
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increments <- rnorm(num_steps)
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cumulative_sum <- cumsum(increments)
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time_series <- c(0, cumulative_sum) + rnorm(1, 0, 50) + 25
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dates <- seq(start_date, length.out = num_steps + 1, by = "day")
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data.frame(date = dates, value = time_series)
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}
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as_plotly_sparkline <- function(plot, color = "white") {
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plot |>
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layout(
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xaxis = list(visible = FALSE, showgrid = FALSE, title = ""),
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yaxis = list(visible = FALSE, showgrid = FALSE, title = ""),
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hovermode = "x",
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margin = list(t = 0, r = 0, l = 0, b = 0),
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font = list(color = color),
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paper_bgcolor = "transparent",
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plot_bgcolor = "transparent"
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) |>
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config(displayModeBar = FALSE) |>
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htmlwidgets::onRender(
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"function(el) {
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var ro = new ResizeObserver(function() {
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var visible = el.offsetHeight > 200;
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Plotly.relayout(el, {'xaxis.visible': visible});
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});
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ro.observe(el);
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}"
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)
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}
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random_plotly_plot <- function(type = NULL, color = "white") {
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if (is.null(type)) {
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type <- sample(c("bar", "box", "line"), 1)
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}
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plot <- switch(
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type,
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bar = random_plotly_bar(color, 50),
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box = random_plotly_box(color, 50),
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line = random_plotly_line(color, 50),
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stop("Not a valid random plot type: ", type)
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)
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as_plotly_sparkline(plot, color)
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}
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random_plotly_bar <- function(color, n = 50) {
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plot_ly(
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x = ~ runif(n),
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type = "histogram",
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histnorm = "probability",
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nbinsx = 10,
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color = I(color),
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stroke = I(color),
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alpha_stroke = 1,
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alpha = 0.6
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)
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}
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random_plotly_box <- function(color, n = 50) {
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plot_ly(x = ~rnorm(n), type = "box", color = I(color))
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}
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random_plotly_line <- function(color, n) {
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add_lines(
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plot_ly(generate_random_walk(n)),
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x = ~ date,
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y = ~ value,
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color = I(color),
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fill = "tozeroy",
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span = I(1),
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alpha = 0.2
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)
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}
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