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PEIP (version 1.6)

Functions for Aster Book on Inverse Theory

Description

Several Functions for Aster Book on Inverse Theory. These functions are translations of MATLAB code developed by the authors to illustrate the concepts of Inverse theory as applied to geophysics. There is one function, rlsqr, written by Keehoon Kim, that is a wrapper for the FORTRAN based Paige and Saunders LSQR routine.

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Version

Install

install.packages('PEIP')

Monthly Downloads

272

Version

1.6

License

GPL (>= 2)

Maintainer

Jonathan Lees

Last Published

January 5th, 2014

Functions in PEIP (1.6)

USV

Singular Value Decomposition
gcv_function

gcv func
idcost

Inverse cosine transform
Vnorm

Vector 2-Norm
plotconst

Plot constant model
get_l_rough

One-D Roughening
ginv

Get inverse
chi

Chi function
GSVD

Generalized svd
l_curve_tgsvd

L curve tgsvd
flipGSVD

Flip output of GSVD
chi2inv

Inverse Chi-Sq
imagesc

Image Display
phiinv

Inverse Normal Distribution Integral
astercode

Compile AsterCode
mcmc

Maximum likelihood Models
wGSVD

wrapper for GSVD
kac

Kaczmarz
art

ART Inverse solution
quadlin

Lagrange multiplier technique
l_curve_corner

L Curve Corner
irls

Iteratively reweight least squares
cgls

Conjugate gradient Least squares
rnk

Rank of Matrix
linesconst

Plot constant model
gcval

Get c-val
Ainv

An Inverse Solution
l_curve_tikh_gsvd

L-curve tikh gsvd
picard_vals

Picard plot
bartl

Bartlett window
lmarq

Lev-Marquardt Inversion
chi2cdf

Chi-Sq CDF
PEIP-package

Inverse Theory Functions for PEIP book
Mnorm

Matrix Norm
blf2

Bounded least squares
interp2grid

Bilinear and Bicubic Interpolation to Grid
occam

Occam inversion
irlsl1reg

L1 least squares with sparsity
nnz

Non-zeros
bayes

Bayes Inversion
loadMAT

Load a Matlab matfile
phi

Integral of Normal Distribution
rlsqr

rlsqr
sirt

SIRT Algorithm for sparse matrix inversion
dcost

cosine transform
l_curve_tikh_svd

L-curve Tikhonov
error.bar

Plot Error Bar
tinv

Inverse T-distribution