Sparklines in Tables • myIO

Overview

myIO’s sparkline mode renders compact, axes-free charts at 20px height, ideal for embedding inline in table cells. Enable it with sparkline = TRUE:

myIO(data.frame(x = 1:20, y = cumsum(rnorm(20))), sparkline = TRUE) |>
  addIoLayer("line", label = "trend", mapping = list(x_var = "x", y_var = "y"))

Supported types

df <- data.frame(x = 1:12, y = c(4, 6, 5, 8, 7, 9, 6, 10, 8, 11, 9, 12))

# Line sparkline
myIO(df, sparkline = TRUE) |>
  addIoLayer("line", label = "line", mapping = list(x_var = "x", y_var = "y"))

# Bar sparkline
myIO(df, sparkline = TRUE) |>
  addIoLayer("bar", label = "bars", mapping = list(x_var = "x", y_var = "y"))

# Area sparkline
myIO(df, sparkline = TRUE) |>
  addIoLayer("area", label = "area", mapping = list(x_var = "x", y_var = "y"))

What sparkline mode does

Strips axes, legend, reference lines, and all interactions
Sets margins to 1px
Defaults height to 20px, width to 100%
Only supports line, bar, and area types