alluvial_wide: alluvial plot of data in wide format

In easyalluvial: Generate Alluvial Plots with a Single Line of Code

alluvial plot of data in wide format

Description

plots a dataframe as an alluvial plot. All numerical variables are scaled, centered and YeoJohnson transformed before binning. Plots all variables in the sequence as they appear in the dataframe until maximum number of values is reached.

Usage

alluvial_wide(
  data,
  id = NULL,
  max_variables = 20,
  bins = 5,
  bin_labels = c("LL", "ML", "M", "MH", "HH"),
  NA_label = "NA",
  order_levels = NULL,
  fill_by = "first_variable",
  col_vector_flow = palette_qualitative() %>% palette_filter(greys = F),
  col_vector_value = RColorBrewer::brewer.pal(9, "Greys")[c(4, 7, 5, 8, 6)],
  colorful_fill_variable_stratum = T,
  verbose = F,
  stratum_labels = T,
  stratum_label_type = "label",
  stratum_label_size = 4.5,
  stratum_width = 1/4,
  auto_rotate_xlabs = T,
  ...
)

Arguments

data	a dataframe
id	unquoted column name of id column or character vector with id column name
max_variables	maximum number of variables, Default: 20
bins	number of bins for numerical variables, Default: 5
bin_labels	labels for the bins from low to high, Default: c("LL", "ML", "M", "MH", "HH")
NA_label	character vector, define label for missing data, Default: 'NA'
order_levels	character vector denoting levels to be reordered from low to high
fill_by	one_of(c('first_variable', 'last_variable', 'all_flows', 'values')), Default: 'first_variable'
col_vector_flow	HEX colors for flows, Default: palette_filter( greys = F)
col_vector_value	Hex colors for y levels/values, Default: RColorBrewer::brewer.pal(9, "Greys")[c(3, 6, 4, 7, 5)]
colorful_fill_variable_stratum	logical, use flow colors to colorize fill variable stratum, Default: TRUE
verbose	logical, print plot summary, Default: F
stratum_labels	logical, Default: TRUE
stratum_label_type	character, Default: "label"
stratum_label_size	numeric, Default: 4.5
stratum_width	double, Default: 1/4
auto_rotate_xlabs	logical, Default: TRUE
...	additional arguments passed to manip_bin_numerics

Details

Under the hood this function converts the wide format into long format. ggalluvial also offers a way to make alluvial plots directly from wide format tables but it does not allow individual colouring of the stratum segments. The tradeoff is that we can only order levels as a whole and not individually by variable, Thus if some variables have levels with the same name the order will be the same. If we want to change level order independently we have to assign unique level names first.

Value

ggplot2 object

See Also

alluvial_wide , geom_flow , geom_stratum , manip_bin_numerics

Examples

## Not run: 
alluvial_wide( data = mtcars2, id = ids
                , max_variables = 3
                , fill_by = 'first_variable' )#'
# more coloring variants----------------------
alluvial_wide( data = mtcars2, id = ids
                , max_variables = 5
                , fill_by = 'last_variable' )

alluvial_wide( data = mtcars2, id = ids
                , max_variables = 5
                , fill_by = 'all_flows' )

alluvial_wide( data = mtcars2, id = ids
                , max_variables = 5
                , fill_by = 'first_variable' )

# manually order variable values and colour by stratum value

alluvial_wide( data = mtcars2, id = ids
                 , max_variables = 5
                 , fill_by = 'values'
                 , order_levels = c('4', '8', '6') )

## End(Not run)

easyalluvial documentation built on May 29, 2024, 5:32 a.m.