Description Usage Arguments Details Value Author(s) See Also Examples
Models, coefficients, and standard errors in objects of class 'bas' are represented as a list of lists to reduce storage by omitting the zero entries. These functions coerce the list object to a matrix and fill in the zeros to facilitate other computations.
1 2 3 4 5 6 7  ## S3 method for class 'bas'
list2matrix(x, what, which.models=NULL)
## S3 method for class 'which'
list2matrix(x, which.models=NULL)
which.matrix(which, n.vars)

x 
a 'bas' object 
what 
name of bas list to coerce 
which.models 
a vector of indices use to extract a subset 
which 

n.vars 
the total number of predictors, 
list2matrix.bas(x, which)
is equivalent to
list2matrix.which(x)
, however, the latter uses sapply rather than
a loop. list2matrix.which
and which.matrix
both coerce
x$which
into a matrix.
a matrix representation of x$what
, with number of rows equal
to the length of which.models or total number of models and number of
columns x$n.vars
Merlise Clyde clyde@stat.duke.edu
1 2 3 4 5 6 7 8 9 10  ## Not run: library(MASS)
data(UScrime)
UScrime[,2] = log(UScrime[,2])
crime.bic = bas.lm(y ~ ., data=UScrime, n.models=2^15, prior="BIC",
initprobs= "eplogp")
coef = list2matrix.bas(crime.bic, "ols") # extract all ols coefficients
se = list2matrix.bas(crime.bic, "ols.se")
models = list2matrix.which(crime.bic) #matrix of model indicators
models = which.matrix(crime.bic$which, crime.bic$n.vars) #matrix of model indicators
## End(Not run)

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