Skip to contents

Plot Monte Carlo Node Distribution with Boxplot and Scatter Points

Source: R/mc_plot.R
mc_plot.Rd

[Experimental] Creates a ggplot2 visualisation of Monte Carlo node data showing distributions as semi-transparent boxplots overlaid with scatter points representing individual uncertainty iterations.

Usage

mc_plot(
  mcmodule = NULL,
  mc_name = NULL,
  mcnode = NULL,
  data = NULL,
  keys_names = NULL,
  color_by = NULL,
  order_by = NULL,
  group_by = NULL,
  filter = NULL,
  threshold = NULL,
  scale = NULL,
  max_dots = 300,
  point_alpha = 0.4,
  boxplot_alpha = 0.3,
  color_pal = NULL
)

Arguments

mcmodule

(mcmodule object, optional). Module containing the node.

mc_name

(character, optional). Name of the mcnode in the module.

mcnode

(mcnode object, optional). mcnode to plot directly.

data

(data frame, optional). Input data. If NULL, extracted from mcmodule. Default: NULL.

keys_names

(character vector, optional). Column names for grouping variates. If NULL, uses node keys from module or row indices. Default: NULL.

color_by

(character, optional). Column name to colour points and boxplot. Must be in keys_names or data. Default: NULL.

order_by

(character, optional). Column name or "median" to reorder y-axis groups. If "median", groups ordered by median value. Default: NULL.

group_by

(character, optional). Column name to group variates (e.g., "commodity"). Variates organised so all scenarios per group appear together. Default: NULL.

filter

(expression, optional). Unquoted expression to filter variates (e.g., pathogen == "a" or origin == "nord"). Passed to tidy_mcnode(). Default: NULL.

threshold

(numeric, optional). Reference value for vertical dashed line. Default: NULL.

scale

(character, optional). Transformation for x-axis: "identity" (default), "log10", "log", "sqrt", or "asinh". Default: NULL.

max_dots

(integer). Maximum dots per variate; exceeding this triggers representative sampling. Boxplots always use all simulations. Default: 300.

point_alpha

(numeric). Transparency for points (0–1). Default: 0.4.

boxplot_alpha

(numeric). Transparency for boxplots (0–1). Default: 0.3.

color_pal

(character vector, optional). Named vector of colours for color_by categories. Default: NULL.

Value

A ggplot2 object for further customisation and display.

Details

When color_by is NULL, scenarios are coloured by default: — baseline scenario (scenario_id == "0"): blue (#6ABDEB); — alternative scenarios: green (#A4CF96). Boxplots show all uncertainty iterations for statistical accuracy; scatter points are sampled to improve readability with many variates.

Examples

# Basic plot using mcmodule and mc_name
mc_plot(imports_mcmodule, "w_prev")


# Plot with custom coloring and ordering
mc_plot(imports_mcmodule, "w_prev",
  color_by = "origin",
  order_by = "median"
)


# Plot with threshold and scale transformation
mc_plot(imports_mcmodule, "no_detect_a",
  threshold = 0.5,
  scale = "log10"
)