grimmer_plot_line: Visualize the standard deviations that GRIMMER admits

In scrutiny: Error Detection in Science

Visualize the standard deviations that GRIMMER admits

Description

grimmer_plot_line() draws the GRIMMER test for a single value set, as grim_plot_line() does for GRIM. Of all SDs that could have been reported with digits_sd decimal places, each square is one that a sample of size n with mean x could have; the others are left out. The reported SD is marked above the row and labeled as consistent or inconsistent.

For many value sets, grim_plot_grid() accepts grimmer_map() output and shows the GRIM part of the test.

Usage

grimmer_plot_line(
  x,
  sd,
  n,
  digits_x,
  digits_sd,
  items_averaged,
  data_type,
  sd_meaning = c("sd_sample", "sd_pop", "sd_sample_or_pop", "se"),
  rounding = "up_or_down",
  threshold = 5,
  symmetric = FALSE,
  zoom = c("close", "medium", "wide"),
  color_con = "#0047ff",
  color_incon = "#ff2a00",
  color_attainable = "grey75"
)

Arguments

x, sd, n, digits_x, digits_sd, items_averaged, rounding, threshold, symmetric, sd_meaning	The same as in grimmer(), but x, sd, n, digits_x, digits_sd, and items_averaged must have length 1.
data_type	String. "integer" if the values are whole numbers, as in grimmer(). There is no default, so that every call states this assumption. "continuous" and NA are errors: if the data may be continuous, there are no values to draw.
zoom	String. How much of the row to show: "close" (the default), "medium", or "wide"; see Details.
color_con, color_incon	Strings. Color of the marker, the strip behind the squares, and the square at the reported value if it is consistent. color_con applies if the value is consistent, color_incon if not. Defaults are "#0047ff" and "#ff2a00".
color_attainable	String. Color of the squares for attainable values that were not reported, like the consistent cells of grim_plot_grid()'s raster. Default is "grey75".

Details

zoom works as in grim_plot_line(), but with zoom = "wide", the row runs from the whole number at or below sd to the next one up. It never goes below zero.

If x is GRIM-inconsistent with n, no SD is attainable and the row has no squares.

Value

A ggplot object.

Examples

# A mean of 5.23 with an SD of 2.55 is not consistent with a sample size of
# 35, but it is with 31:
grimmer_plot_line(
  x = 5.23,
  sd = 2.55,
  n = 35,
  digits_x = 2,
  digits_sd = 2,
  items_averaged = 1,
  data_type = "integer"
)
grimmer_plot_line(
  x = 5.23,
  sd = 2.55,
  n = 31,
  digits_x = 2,
  digits_sd = 2,
  items_averaged = 1,
  data_type = "integer"
)

scrutiny documentation built on Nov. 11, 2026, 1:09 a.m.