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This function allows to split the flowchart in function of the categories of a column of the database. It will generate as many boxes as categories has the column showing in each one the frequency of each category. It will additionally group the database per this column.

Usage

fc_split(
  object,
  var = NULL,
  N = NULL,
  label = NULL,
  text_pattern = "{label}\n {n} ({perc}%)",
  perc_total = FALSE,
  sel_group = NULL,
  na.rm = FALSE,
  show_zero = FALSE,
  round_digits = 2,
  just = "center",
  text_color = "black",
  text_fs = 8,
  text_fface = 1,
  text_ffamily = NA,
  text_padding = 1,
  bg_fill = "white",
  border_color = "black",
  title = NULL,
  text_color_title = "black",
  text_fs_title = 10,
  text_fface_title = 1,
  text_ffamily_title = NA,
  text_padding_title = 0.6,
  bg_fill_title = "white",
  border_color_title = "black",
  offset = NULL
)

Arguments

object

fc object that we want to split.

var

variable column of the database from which it will be splitted.

N

Number of rows after the split in case `var` is NULL.

label

Vector of characters with the label of each category in order. It has to have as many elements as categories has the column. By default, it will put the labels of the categories.

text_pattern

Structure that will have the text in each of the boxes. It recognizes label, n, N and perc within brackets. For default it is "{label}\n {n} ({perc}%)".

perc_total

logical. Should percentages be calculated using the total number of rows at the beginning of the flowchart? Default is FALSE, meaning that they will be calculated using the number at the parent leaf.

sel_group

Specify if the splitting has to be done only by one of the previous groups. Default is NULL.

na.rm

logical. Should missing values of the grouping variable be removed? Default is FALSE.

show_zero

logical. Should the levels of the grouping variable that don't have data be shown? Default is FALSE.

round_digits

Number of digits to round percentages. It is 2 by default.

just

Justification for the text: left, center or right. Default is center.

text_color

Color of the text. It is black by default.

text_fs

Font size of the text. It is 8 by default.

text_fface

Font face of the text. It is 1 by default. See the `fontface` parameter for gpar.

text_ffamily

Changes the font family of the text. Default is NA. See the `fontfamily` parameter for gpar.

text_padding

Changes the text padding inside the box. Default is 1. This number has to be greater than 0.

bg_fill

Box background color. It is white by default.

border_color

Box border color. It is black by default.

title

Add a title box to the split. Default is NULL. It can only be used when there are only two resulting boxes after the split.

text_color_title

Color of the title text. It is black by default.

text_fs_title

Font size of the title text. It is 8 by default.

text_fface_title

Font face of the title text. It is 1 by default. See the `fontface` parameter for gpar.

text_ffamily_title

Changes the font family of the title text. Default is NA. See the `fontfamily` parameter for gpar.

text_padding_title

Changes the title text padding inside the box. Default is 1. This number has to be greater than 0.

bg_fill_title

Title box background color. It is white by default.

border_color_title

Title box border color. It is black by default.

offset

Amount of space to add to the distance between boxes (in the x coordinate). If positive, this distance will be larger. If negative, it will be smaller. This number has to be at least between 0 and 1 (plot limits) and the resulting x coordinate cannot exceed these plot limits. The default is NULL (no offset).

Value

List with the dataset grouped by the splitting variable and the flowchart parameters with the resulting split.

Examples

safo |>
  dplyr::filter(!is.na(group)) |>
  as_fc(label = "Randomized patients") |>
  fc_split(group) |>
  fc_draw()