vchartr (version 0.1.4)

v_heatmap: Create a Heatmap Chart

Description

Create a Heatmap Chart

Usage

v_heatmap(
  vc,
  mapping = NULL,
  data = NULL,
  name = NULL,
  ...,
  serie_id = NULL,
  data_id = NULL
)

Value

A vchart()

htmlwidget object.

Arguments

vc

A chart initialized with vchart().

mapping

Default list of aesthetic mappings to use for chart.

data

Default dataset to use for chart. If not already a data.frame, it will be coerced to with as.data.frame.

name

Name for the serie, only used for single serie (no color/fill aesthetic supplied).

...

Additional parameters for the serie.

data_id, serie_id

ID for the data/serie, can be used to further customize the chart with v_specs().

Examples

library(vchartr)

# Heatmap with continuous fill variable
vchart(co2_emissions) %>%
  v_heatmap(aes(x = year, y = country, fill = co2_per_capita))

# Change colors
vchart(co2_emissions) %>%
  v_heatmap(aes(x = year, y = country, fill = co2_per_capita)) %>%
  v_specs_colors(
    range = rev(
      c("#8C510A", "#BF812D", "#DFC27D", "#F6E8C3",
        "#C7EAE5", "#80CDC1", "#35978F", "#01665E")
    )
  )

# Heatmap with discrete fill variable
vchart(co2_emissions) %>%
  v_heatmap(aes(x = year, y = country, fill = co2_growth_change))

# Change colors
vchart(co2_emissions) %>%
  v_heatmap(aes(x = year, y = country, fill = co2_growth_change)) %>%
  v_scale_fill_manual(c(
    Increase = "firebrick",
    Decrease = "forestgreen"
  ))