PEIP: Ainv – R documentation

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Ainv

An Inverse Solution

Description

QR decomposition solution to Ax=b

Usage

Ainv(GAB, x, tol = 1e-12)

Arguments

`GAB`	design matrix
`x`	right hand side
`tol`	tolerance for singularity

Details

I needed something to make up for the lame-o matlab code that does this h = G\x to get the inverse

Value

Inverse Solution

Author(s)

Jonathan M. Lees<jonathan.lees@unc.edu>

Examples

set.seed(2015)
GAB = matrix(runif(36), ncol=6)
truex =rnorm(ncol(GAB))
rhs = GAB %*% truex

rhs = as.vector(rhs )

tout = Ainv(GAB, rhs, tol = 1e-12)
tout - truex

PEIP

Geophysical Inverse Theory and Optimization

v2.2-3

GPL (>= 2)

Authors

Jonathan M. Lees [aut, cre]

Initial release

2020-08-28