extractTimeConst: Extract Viscous Relaxation Time Constants From Force Curves

In nstone8/Rasylum: Rasylum: AFM Data Analysis in R

Description

Perform a fit of viscous relaxation data to a biexponential decay model appropriate for the relaxation of cells indented using an AFM.

Usage

extractTimeConst(frame, time="t", force="force",
zPos="zSensr",dwellTime="dwell", debug=FALSE, extraTrim=0)
parExtractTimeConst(cases, time="t", force="force", zPos="zSensr",
dwell="dwell", debug=FALSE, numCores=-1, extraTrim=0)

Arguments

frame	A data.frame containing the force curve of interest
time	The name of the column in frame which contains the time data
force	The name of the column in frame which contains the force data
zPos	The name of the column in frame which contains the z position data
dwellTime	The name of the column in frame which contains the dwell time
debug	If TRUE, each fit will be displayed to the user, who should press 'enter' at the command prompt to cycle through the fits. This functionality is intended to be used for tuning of fit parameters
extraTrim	Percentage of dwell time to trim off the end of the dwell curve
numCores	Number of cores to use for the computation. If numCores==-1 all available cores will be used

Value

An object containing the extracted stiffness values, fit residuals and the fit curves themselves. For fits produced using parExtractTimeConst, fit curves can be saved using saveFits and other data can be formatted into a human-readable data.frame using collateFits.

nstone8/Rasylum documentation built on May 9, 2019, 8:18 a.m.