COMPARE: Compare two vectors or matrices (communalities or loadings)

In EFAtools: Fast and Flexible Implementations of Exploratory Factor Analysis Tools

Compare two vectors or matrices (communalities or loadings)

Description

COMPARE() has been superseded by efa_compare(), which is the recommended interface going forward. It remains available and unchanged so existing code keeps working.

Usage

COMPARE(
  x,
  y,
  reorder = c("congruence", "names", "none"),
  corres = TRUE,
  thresh = 0.3,
  digits = 4,
  m_red = 0.001,
  range_red = 0.001,
  round_red = 3,
  print_diff = TRUE,
  na.rm = FALSE,
  x_labels = c("x", "y"),
  plot = TRUE,
  plot_red = 0.01
)

Arguments

x	matrix, or vector. Loadings or communalities of a factor analysis output.
y	matrix, or vector. Loadings or communalities of another factor analysis output to compare to x.
reorder	character. Whether and how elements / columns should be reordered. If "congruence" (default), the columns of y are matched to those of x by a joint one-to-one assignment that maximizes the total Tucker's congruence coefficient (a standard measure of similarity between two loading vectors) across all columns at once, and each matched column's sign is flipped if needed. This way, mismatched factor order or sign between two solutions does not distort the comparison. It applies to matrices only, and warns when x and y are vectors. If "names", the columns of a matrix – or the elements of a vector – are put in alphabetical order of their names; the rows of a matrix are assumed to be aligned already and are left untouched. If "none", no reordering is done.
corres	logical. Whether factor correspondences should be compared if a matrix is entered. Default is TRUE.
thresh	numeric. The threshold at or above which a loading is classified as substantial. Default is .3.
digits	numeric. Number of decimals to print in the output. Default is 4.
m_red	numeric. Number above which the mean and median should be printed in red (i.e., if .001 is used, the mean will be in red if it is larger than .001, otherwise it will be displayed in green.) Default is .001.
range_red	numeric. Number above which the min and max should be printed in red (i.e., if .001 is used, min and max will be in red if the max is larger than .001, otherwise it will be displayed in green). Default is .001. Note that the color of min also depends on max, that is min will be displayed in the same color as max.
round_red	numeric. The number of agreeing decimals below which the report highlights the agreement in red (i.e., if 3 is used, the value is shown in red when the compared numbers agree to fewer than 3 decimals, otherwise in green). Default is 3.
print_diff	logical. Whether the difference vector or matrix should be printed or not. Default is TRUE.
na.rm	logical. Whether NAs should be removed from the difference summaries and factor-correspondence classifications. With FALSE, a missing loading makes the correspondence counts undefined (NA). Default is FALSE.
x_labels	character. A vector of length two containing identifying labels for the two objects x and y that will be compared. These will be used as labels on the x-axis of the plot, and to name the direction of the signed elementwise differences in the printed report (see print.efa_compare()). Default is "x" and "y".
plot	Accepted and validated, but without effect; retained for backwards compatibility. The difference plot is drawn by plot.efa_compare(). Default is TRUE.
plot_red	numeric. Threshold above which to plot the absolute differences in red. Default is .01.

Value

A list of class c("efa_compare", "COMPARE"), identical to the value of efa_compare(); see there for the components.

See Also

efa_compare()

EFAtools documentation built on Aug. 21, 2026, 5:16 p.m.