auto.correlate: Automatic correlations

In hfgolino/EGA: Exploratory Graph Analysis – a Framework for Estimating the Number of Dimensions in Multivariate Data using Network Psychometrics

Automatic correlations

Description

This wrapper is similar to cor_auto. There are some minor adjustments that make this function simpler and to function within EGAnet. NA values are not treated as categories (this behavior differs from cor_auto)

Usage

auto.correlate(
  data,
  corr = c("cosine", "kendall", "pearson", "spearman"),
  ordinal.categories = 7,
  forcePD = TRUE,
  na.data = c("pairwise", "listwise"),
  empty.method = c("none", "zero", "all"),
  empty.value = c("none", "point_five", "one_over"),
  verbose = FALSE,
  ...
)

Arguments

data	Matrix or data frame. Should consist only of variables to be used in the analysis
corr	Character (length = 1). The standard correlation method to be used. Defaults to "pearson". Using "pearson" will compute polychoric, tetrachoric, polyserial, and biserial correlations for categorical and categorical/continuous correlations by default. To obtain "pearson" correlations regardless, use cor. Other options of "kendall" and "spearman" are provided for completeness and use cor. cosine is also available
ordinal.categories	Numeric (length = 1). Up to the number of categories before a variable is considered continuous. Defaults to 7 categories before 8 is considered continuous
forcePD	Boolean (length = 1). Whether positive definite matrix should be enforced. Defaults to TRUE
na.data	Character (length = 1). How should missing data be handled? Defaults to "pairwise". Available options: "pairwise" — Computes correlation for all available cases between two variables "listwise" — Computes correlation for all complete cases in the dataset
empty.method	Character (length = 1). Method for empty cell correction in polychoric.matrix. Defaults to "none" Available options: "none" — Adds no value (empty.value = "none") to the empirical joint frequency table between two variables "zero" — Adds empty.value to the cells with zero in the joint frequency table between two variables "all" — Adds empty.value to all in the joint frequency table between two variables
empty.value	Character (length = 1). Value to add to the joint frequency table cells in polychoric.matrix. Defaults to "none". Accepts numeric values between 0 and 1 or specific methods: "none" — Adds no value (0) to the empirical joint frequency table between two variables "point_five" — Adds 0.5 to the cells defined by empty.method "one_over" — Adds 1 / n where n equals the number of cells based on empty.method. For empty.method = "zero", n equals the number of zero cells
verbose	Boolean (length = 1). Whether messages should be printed. Defaults to FALSE
...	Not actually used but makes it easier for general functionality in the package

Author(s)

Alexander P. Christensen <[e-mail]>

Examples

# Load data
wmt <- wmt2[,7:24]

# Obtain correlations
wmt_corr <- auto.correlate(wmt)

hfgolino/EGA documentation built on Nov. 11, 2024, 9:28 p.m.