threshold: Threshold a numeric array or vector

In mmand: Mathematical Morphology in Any Number of Dimensions

Threshold a numeric array or vector

Description

This function thresholds an array or vector, setting elements below the threshold value to zero. The threshold can be given literally or calculated using k-means clustering.

Usage

threshold(x, level, method = c("literal", "kmeans"), binarise = TRUE)

Arguments

x	A numeric vector or array.
level	The literal threshold level, if required.
method	The method to use to calculate the threshold. If "literal" (the default) then the value of level will be used. If "kmeans" then the threshold value will be determined implicitly using k-means clustering.
binarise	Whether to set suprathreshold elements to unity (if TRUE), or leave them at their original values (if FALSE).

Author(s)

Jon Clayden <[e-mail]>

See Also

binarise

Examples

x <- c(0.1, 0.05, 0.95, 0.85, 0.15, 0.9)
threshold(x, method="kmeans")
threshold(x, 0.5)

mmand documentation built on Feb. 16, 2023, 9:22 p.m.