PEIP: ginv – R documentation

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ginv

Get inverse

Description

Get inverse of matrisx or solve Ax=b.

Usage

ginv(G, x, tol = 1e-12)

Arguments

`G`	Design Matrix
`x`	right hand side
`tol`	tolerance

Details

This function used as alternative to matlab code that does this h = G\x to get the inverse

Value

inverse as a N by 1 matrix.

Note

Be careful about the usage of tolerance

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 = ginv(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