unusablesensors: unusablesensors

In gjmvanboxtel/eegr: Electrophysiological data analysis

unusablesensors

Description

Detect unusable sensors containing NA or constant values

Usage

unusablesensors(x)

Arguments

x	input data, specified as a numeric matrix or vector. In case of a vector it represents a single signal; in case of a matrix each column is a signal. Alternatively, an object of class ctd.

Details

Constant values are defined to have a standard deviation or a median absolute deviation smaller than 10e-10.

Value

a named list:

n

number of unusable channels

unusable

a named integer vector containing all unusable sensors

sensors_NA

a named integer vector containing sensors with missing values

sensors_constant

a named integer vector containing sensors with constant values

Author(s)

Original Matlab code by Tim Mullen (2011); ported to R and adapted by Geert van Boxtel, [e-mail],

Examples

bad <- unusablesensors(EEGdata)
if (bad$n > 0) good <- EEGdata[, -bad$unusable]
 

gjmvanboxtel/eegr documentation built on May 20, 2023, 4:26 a.m.