RfPhi: Determine Rs and corresponding parameters following the RfPhi...

Description Usage Arguments Value Author(s) References See Also

View source: R/RfPhi.R


This function applies the RfPhi technique to object data following a Chi squared statistical test for the most uniform distribution of object orientations.


RfPhi(my.par, out.file, section.title, weight.vec = TRUE, unit.area = "px")



A data frame object returned by ParEx or RfPhiParRead.


Path to PDF file where a standardized plot of the sectional results is made.


Title of the sectional analysis.


Logical, if TRUE an eccentricity weighting is applied such that more elliptical objects influence the vector mean stronger than objects with more circular shapes.


The unit of measure in which the mean object area is calculated. If, for example, the input data is returned from ParEx the unit is in pixels; however, if manual data is used, the unit used to measure axial lengths should be used.


Function creates a standardized PDF file containing an RfPhi plot, sectional Rs ellipse, Chi square plot, and a list of calculated properties. These properties are also returned via an object of class RFPHI.


Jeffrey R. Webber


Dunnet, D. (1969). A technique of finite strain analysis using elliptical particles.

Ramsay, J. (1969). Folding and fracturing of rocks.

Lisle, R. (1985). Geological strain analysis, a manual for the rf/phi method.

Mulchrone, K. and P. Meere (2001). A windows program for the analysis of tectonic strain using deformed elliptical markers.

Mookerjee, M. and S. Nickleach (2011). Three-dimensional strain analysis using Mathematica.

See Also

FryData, FryNormData, FrySelect

RockFab documentation built on May 29, 2017, 10:33 p.m.