e_pictorial: Pictorial

In JohnCoene/echarts4r: Create Interactive Graphs with 'Echarts JavaScript' Version 5

Pictorial

Description

Pictorial bar chart is a type of bar chart that custimzed glyph (like images, SVG PathData) can be used instead of rectangular bar.

Usage

e_pictorial(
  e,
  serie,
  symbol,
  bind,
  name = NULL,
  legend = TRUE,
  y_index = 0,
  x_index = 0,
  ...
)

e_pictorial_(
  e,
  serie,
  symbol,
  bind = NULL,
  name = NULL,
  legend = TRUE,
  y_index = 0,
  x_index = 0,
  ...
)

Arguments

e	An echarts4r object as returned by e_charts or a proxy as returned by echarts4rProxy.
serie	Column name of serie to plot.
symbol	Symbol to plot.
bind	Binding between datasets, namely for use of e_brush.
name	name of the serie.
legend	Whether to add serie to legend.
x_index, y_index	Indexes of x and y axis.
...	Any other option to pass, check See Also section.

Symbols

• Built-in circle, rect, roundRect, triangle, diamond, pin, arrow.

• SVG Path

• Images Path to image, don't forget to precede it with image://, see examples.

See Also

Additional arguments

Examples

# built-in symbols
y <- rnorm(10, 10, 2)
df <- data.frame(
  x = 1:10,
  y = y,
  z = y - rnorm(10, 5, 1)
)

df |>
  e_charts(x) |>
  e_bar(z, barWidth = 10) |>
  e_pictorial(
    y,
    symbol = "rect",
    symbolRepeat = TRUE,
    z = -1,
    symbolSize = c(10, 4)
  ) |>
  e_theme("westeros")

# svg path
path <- "path://M0,10 L10,10 C5.5,10 5.5,5 5,0 C4.5,5 4.5,10 0,10 z"

style <- list(
  normal = list(opacity = 0.5),
  # normal
  emphasis = list(opacity = 1) # on hover
)

df |>
  e_charts(x) |>
  e_pictorial(
    y,
    symbol = path,
    barCategoryGap = "-130%",
    itemStyle = style
  )

# image
# might not work in RStudio viewer
# open in browser
qomo <- paste0(
  "https://ecomfe.github.io/echarts-examples/public/",
  "data/asset/img/hill-Qomolangma.png"
)

kili <- paste0(
  "https://ecomfe.github.io/echarts-examples/public/",
  "data/asset/img/hill-Kilimanjaro.png"
)

data <- data.frame(
  x = c("Qomolangma", "Kilimanjaro"),
  value = c(8844, 5895),
  symbol = c(
    paste0("image://", qomo),
    paste0("image://", kili)
  )
)

data |>
  e_charts(x) |>
  e_pictorial(value, symbol) |>
  e_legend(FALSE)

# timeline
df <- data.frame(
  x = rep(1:5, 2),
  y = runif(10, 1, 10),
  year = c(
    rep(2017, 5),
    rep(2018, 5)
  )
)

df |>
  group_by(year) |>
  e_charts(x, timeline = TRUE) |>
  e_pictorial(
    y,
    symbol = "rect",
    symbolRepeat = TRUE,
    z = -1,
    symbolSize = c(10, 4)
  )

JohnCoene/echarts4r documentation built on Feb. 23, 2024, 9:21 a.m.