dist_sigs_2_mean: Distance between fatty acid signatures and their mean

In qfasar: Quantitative Fatty Acid Signature Analysis in R

Description

The utility function dist_sigs_2_mean computes the summed and mean distance between a collection of fatty acid signatures and their mean signature.

Usage

dist_sigs_2_mean(sig_data, dist_meas = 1, gamma = 1)

Arguments

sig_data	A numeric matrix of fatty acid signatures in column-major format.
dist_meas	An integer indicator of the distance measure to compute. Default value 1.
gamma	The power parameter of the chi-square distance measure. Default value 1.

Value

A list containing the following elements:

dist_sum

The summed distance between each signature and the mean signature.

dist_mean

The mean distance between each signature and the mean signature.

Details

This is an internal utility function. The signature data in sig_data are presumed to be ready for analysis, which is best accomplished by a call to the function prep_sig. Consequently, to increase execution speed during simulations, no numeric error checking is performed. Please refer to the documentation for prep_sig for additional information.

Please refer to the documentation for dist_between_2_sigs for additional information regarding distance measures.

Utility functions called by dist_sigs_2_mean:

• dist_between_2_sigs

qfasar documentation built on March 20, 2020, 1:10 a.m.