Mapper for element-wise scaling

Create a standalone scaling mapper that can be used as part of a bru_mapper_pipe. If mapper is non-null, the bru_mapper_scale() constructor returns bru_mapper_pipe(list(mapper = mapper, scale = bru_mapper_scale()))

Usage

bru_mapper_scale(mapper = NULL)

# S3 method for bru_mapper_scale
ibm_n(mapper, ..., state = NULL, n_state = NULL)

# S3 method for bru_mapper_scale
ibm_n_output(mapper, input, state = NULL, ..., n_state = NULL)

# S3 method for bru_mapper_scale
ibm_values(mapper, ..., state = NULL, n_state = NULL)

# S3 method for bru_mapper_scale
ibm_jacobian(mapper, input, state = NULL, ..., sub_lin = NULL)

# S3 method for bru_mapper_scale
ibm_eval(mapper, input, state = NULL, ..., sub_lin = NULL)

Arguments

mapper

A mapper S3 object, inheriting from bru_mapper.

...

Arguments passed on to other methods

state

A vector of latent state values for the mapping, of length ibm_n(mapper, inla_f = FALSE)

n_state

integer giving the length of the state vector for mappers that have state dependent output size.

input

Data input for the mapper.

sub_lin

Internal, optional pre-computed sub-mapper information

Details

For bru_mapper_scale, input NULL values are interpreted as no scaling.

See also

bru_mapper, bru_mapper_generics

Other mappers: bru_get_mapper(), bru_mapper(), bru_mapper.fm_mesh_1d(), bru_mapper.fm_mesh_2d(), bru_mapper_aggregate(), bru_mapper_collect(), bru_mapper_const(), bru_mapper_factor(), bru_mapper_generics, bru_mapper_harmonics(), bru_mapper_index(), bru_mapper_linear(), bru_mapper_logsumexp(), bru_mapper_marginal(), bru_mapper_matrix(), bru_mapper_mesh_B(), bru_mapper_multi(), bru_mapper_pipe(), bru_mapper_shift(), bru_mapper_taylor()

Examples

m <- bru_mapper_scale()
ibm_eval2(m, c(1, 2, 1, 2), 1:4)
#> $offset
#> [1] 1 4 3 8
#> 
#> $jacobian
#> 4 x 4 diagonal matrix of class "ddiMatrix"
#>      [,1] [,2] [,3] [,4]
#> [1,]    1    .    .    .
#> [2,]    .    2    .    .
#> [3,]    .    .    1    .
#> [4,]    .    .    .    2
#>