is_estimable {lmerTest} | R Documentation |
Estimability of Contrasts
Description
Computes the estimability of a vector or matrix of contrasts (i.e. linear functions of the coefficients) from the nullspace of a design matrix or potentially directly from the design matrix.
Usage
is_estimable(
contrast,
nullspace = NULL,
X = NULL,
tol = sqrt(.Machine$double.eps)
)
Arguments
contrast |
a numeric matrix where each row is a contrast vector for
which estimability is computed. The matrix should have as many columns as
there are columns in the design matrix (which equals the number of
coefficients). If |
nullspace |
the nullspace of the design matrix. |
X |
design matrix. |
tol |
tolerance for determining if a contrast is orthogonal to the |
Value
a logical vector of length nrow(contrast)
determining if each
contrast is estimable
Author(s)
Rune Haubo B. Christensen
See Also
Examples
# FIXME: We need some examples here
[Package lmerTest version 3.1-3 Index]