identify_elbow: identify_elbow
In ahnjedid/MetaConIdentifier: Metadata Confounding Identifier

Description Usage Arguments Value Examples

View source: R/identify_elbow.R

Identify the number of factors that explain the most amount of variance through the elbow method.

1	identify_elbow(fi_var)

fi_var

A vector representing the percentage of explained variance for each factor. Its length should equal the number of columns in the matrix of factor scores.

A numeric value signifying the optimal number of factors to extract from the matrix of factor scores. A scree plot of the variance percentages will also be outputted.

# Using tcga_metadata from package.
library(MetaConIdentifier)
ca_info <- run_ca(tcga_meta_clean)

# Find the optimal number of factors to extract.
num_factors <- identify_elbow(ca_info$fi_var)