coxph.wtest: Compute a quadratic form
In survival: Survival Analysis
coxph.wtest R Documentation
Compute a quadratic form
Description
This function is used internally by several survival routines. It
computes a simple quadratic form, while properly dealing with missings.
Usage
coxph.wtest(var, b, toler.chol = 1e-09)
Arguments
var
variance matrix
b
vector
toler.chol
tolerance for the internal cholesky decomposition
Details
Compute b' V-inverse b. Equivalent to sum(b * solve(V,b)), except for
the case of redundant covariates in the original model, which lead to
NA values in V and b.
Value
a real number
Author(s)
Terry Therneau
survival documentation built on June 22, 2024, 10:49 a.m.
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| coxph.wtest | R Documentation |
Compute a quadratic form
Description
This function is used internally by several survival routines. It computes a simple quadratic form, while properly dealing with missings.
Usage
coxph.wtest(var, b, toler.chol = 1e-09)
Arguments
var |
variance matrix |
b |
vector |
toler.chol |
tolerance for the internal cholesky decomposition |
Details
Compute b' V-inverse b. Equivalent to sum(b * solve(V,b)), except for the case of redundant covariates in the original model, which lead to NA values in V and b.
Value
a real number
Author(s)
Terry Therneau
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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