simplify_tract: Subsetting operator for 'tract' objects

In astamm/fdatractography: Functional Data Analysis for Tractography in R

Description

This method provides an easy and natural way to subset a tract stored in a tract object, without having to deal with the inner representation of the tract class.

Usage

simplify_tract(tract, clusters = NULL, validate = TRUE)

Arguments

tract	The input tract.
clusters	A numeric or integer vector giving the cluster membership of each streamline in the tract.
i	A valid expression to extract subtract with fewer streamlines (could be an integer, a numeric vector, of a logical vector).
tract	An object of class tract.

Value

A tract with the selected streamlines only.

A tract.

Examples

file <- system.file("extdata", "Case001_CST_Left.csv", package = "fdatractography")
cst_left <- read_tract(file)
t1 <- cst_left[1]
t2 <- cst_left[1:2]
n <- length(cst_left$data)
selected_streamlines <- sample(c(TRUE, FALSE), n, replace = TRUE)
t3 <- cst_left[selected_streamlines]
Tract Simplification by Cluster Medians

file <- system.file("extdata", "Case001_CST_Left.csv", package = "fdatractography")
cst_left <- read_tract(file)
m <- simplify_tract(cst_left)

astamm/fdatractography documentation built on May 12, 2019, 5:37 a.m.