echarts4r (version 0.4.5)

e_visual_map: Visual Map

Description

Visual Map

Usage

e_visual_map(
  e,
  serie,
  calculable = TRUE,
  type = c("continuous", "piecewise"),
  scale = NULL,
  ...
)
e_visual_map_(
  e,
  serie = NULL,
  calculable = TRUE,
  type = c("continuous", "piecewise"),
  scale = NULL,
  ...
)

Arguments

e

An echarts4r object as returned by e_charts or a proxy as returned by echarts4rProxy.

serie

Column name of serie to scale against.

calculable

Whether show handles, which can be dragged to adjust "selected range".

type

One of continuous or piecewise.

scale

A function that takes a vector of numeric and returns a vector of numeric of the same length.

...

Any other option to pass, check See Also section.

Scaling function

defaults to e_scale which is a basic function that rescales size between 1 and 20 for that makes for decent sized points on the chart.

See Also

Additional arguments

Examples

# scaled data
mtcars |>
  e_charts(mpg) |>
  e_scatter(wt, qsec, scale = e_scale) |>
  e_visual_map(qsec, scale = e_scale)

# dimension
# color according to y axis
mtcars |>
  e_charts(mpg) |>
  e_scatter(wt) |>
  e_visual_map(wt, dimension = 1)

# color according to x axis
mtcars |>
  e_charts(mpg) |>
  e_scatter(wt) |>
  e_visual_map(mpg, dimension = 0)

v <- LETTERS[1:10]
matrix <- data.frame(
  x = sample(v, 300, replace = TRUE),
  y = sample(v, 300, replace = TRUE),
  z = rnorm(300, 10, 1),
  color = rnorm(300, 10, 1),
  size = rnorm(300, 10, 1),
  stringsAsFactors = FALSE
) |>
  dplyr::group_by(x, y) |>
  dplyr::summarise(
    z = sum(z),
    color = sum(color),
    size = sum(size)
  ) |>
  dplyr::ungroup()

matrix |>
  e_charts(x) |>
  e_scatter_3d(y, z, color, size) |>
  e_visual_map(
    z,
    # scale to z
    inRange = list(symbolSize = c(1, 30)),
    # scale size
    dimension = 3 # third dimension 0 = x, y = 1, z = 2, size = 3
  ) |>
  e_visual_map(
    z,
    # scale to z
    inRange = list(color = c("#bf444c", "#d88273", "#f6efa6")),
    # scale colors
    dimension = 4,
    # third dimension 0 = x, y = 1, z = 2, size = 3, color = 4
    bottom = 300 # padding to avoid visual maps overlap
  )