In: Indicator matrix
In ggm: Graphical Markov Models with Mixed Graphs
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Indicator matrix
Description
Finds the indicator matrix of the zeros of a matrix.
Usage
In(A)
Arguments
A
a matrix.
Details
The indicator matrix is a matrix of zeros and ones which has a zero
element iff the corresponding element of A is (exactly) zero.
Value
a matrix of the same dimensions as A.
Author(s)
Giovanni M. Marchetti
References
Wermuth, N. & Cox, D.R. (2004). Joint response graphs
and separation induced by triangular systems. J.R. Statist. Soc. B,
66, Part 3, 687-717.
See Also
DAG, inducedCovGraph, inducedConGraph
Examples
## A simple way to find the overall induced concentration graph
## The DAG on p. 198 of Cox & Wermuth (1996)
amat <- DAG(y1 ~ y2 + y3, y3 ~ y5, y4 ~ y5)
A <- edgematrix(amat)
In(crossprod(A))
ggm documentation built on May 29, 2024, 7:27 a.m.
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| In | R Documentation |
Indicator matrix
Description
Finds the indicator matrix of the zeros of a matrix.
Usage
In(A)
Arguments
A |
a matrix. |
Details
The indicator matrix is a matrix of zeros and ones which has a zero
element iff the corresponding element of A is (exactly) zero.
Value
a matrix of the same dimensions as A.
Author(s)
Giovanni M. Marchetti
References
Wermuth, N. & Cox, D.R. (2004). Joint response graphs and separation induced by triangular systems. J.R. Statist. Soc. B, 66, Part 3, 687-717.
See Also
DAG, inducedCovGraph, inducedConGraph
Examples
## A simple way to find the overall induced concentration graph
## The DAG on p. 198 of Cox & Wermuth (1996)
amat <- DAG(y1 ~ y2 + y3, y3 ~ y5, y4 ~ y5)
A <- edgematrix(amat)
In(crossprod(A))
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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