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EMMAgeo (version 0.9.4)

End-Member Modelling of Grain-Size Data

Description

End-member modelling analysis of grain-size data.

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Version

Install

install.packages('EMMAgeo')

Monthly Downloads

325

Version

0.9.4

License

GPL-3

Maintainer

Michael Dietze

Last Published

March 19th, 2016

Functions in EMMAgeo (0.9.4)

get.limits

Create lower and upper mode position limits to define robust end-members.
rEM

example data
GUI

Start GUI for EMMA
test.robustness

Function to test model robustness.
get.q

Generate a parameter matrix with q.min and q.max values for robust EMMA.
create.EM

Function to create grain-size-distributions.
get.l.opt

Identify optimum weight transformation value
get.l

Generate a vector of weight transformation values from l_min to l_max.
test.l.max

Function to find maximum possible l value.
residual.EM

Function to evaluate residual end-member loading.
interpolate.classes

Function to interpolate classes.
convert.units

Function to convert between phi and micrometers.
EMMA

Function for end-member modelling analysis.
check.data

Function to check data consistency.
robust.EM

Function to extract robust end-members.
test.factors

Function to evaluate the initial cumulative explained variance.
define.limits

Define mode limits by mouse clicks.
test.parameters

Function to evaluate influence of model parameters.
TR

example data
Mqs.uncertainty

Function to estimate end-member scores uncertainty
model.em

Model all possible end-member scenarios.
X

example data
mix.EM

Function to mix sample spectres.
test.l

Function to test maximum valid l value.
EMMAgeo-package

End-member modelling algorithm and supporting functions for grain-size analysis