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Create an object of class target_metadata_item

Source: R/create_target_metadata_item.R
create_target_metadata_item.Rd

Create a representation of a target_metadata item as a list object of class target_metadata_item. This can be combined with additional target_metadata items using function create_target_metadata() to create a target_metadata object for a given model_task. Such building blocks can ultimately be combined and then written out as or appended to tasks.json Hub config files.

Usage

create_target_metadata_item(
  target_id,
  target_name,
  target_units,
  target_keys = NULL,
  description = NULL,
  target_type,
  is_step_ahead,
  time_unit = NULL,
  schema_version = "latest",
  branch = "main"
)

Arguments

target_id

character string. Short description that uniquely identifies the target.

target_name

character string. A longer human readable target description that could be used, for example, as a visualisation axis label.

target_units

character string. Unit of observation of the target.

target_keys

named list or NULL. Should be NULL, in the case where the target is not specified as a task_id but is specified solely through the target_id argument. Otherwise, should be a named list of one or more character strings. The name of each element should match a task_id variable within the same model_tasks object. Each element should be of length 1. Each value, or the combination of values if multiple keys are specified, define a single target value.

description

character string (optional). An optional verbose description of the target that might include information such as definitions of a 'rate' or similar.

target_type

character string. Target statistical data type. Consult the appropriate version of the hub schema for potential values.

is_step_ahead

logical. Whether the target is part of a sequence of values

time_unit

character string. If is_step_ahead is TRUE, then this argument is required and defines the unit of time steps. if is_step_ahead is FALSE, then this argument is not required and will be ignored if given.

schema_version

Character string specifying the json schema version to be used for validation. The default value "latest" will use the latest version available in the hubverse schemas repository. Alternatively, a specific version of a schema (e.g. "v0.0.1") can be specified.

branch

The branch of the hubverse schemas repository from which to fetch schema. Defaults to "main".

Value

a named list of class target_metadata_item.

Details

For more details consult the documentation on tasks.json Hub config files.

See also

create_target_metadata()

Examples

create_target_metadata_item(
  target_id = "inc hosp",
  target_name = "Weekly incident influenza hospitalizations",
  target_units = "rate per 100,000 population",
  target_keys = list(target = "inc hosp"),
  target_type = "discrete",
  is_step_ahead = TRUE,
  time_unit = "week"
)
#> $target_id
#> [1] "inc hosp"
#> 
#> $target_name
#> [1] "Weekly incident influenza hospitalizations"
#> 
#> $target_units
#> [1] "rate per 100,000 population"
#> 
#> $target_keys
#> $target_keys$target
#> [1] "inc hosp"
#> 
#> 
#> $target_type
#> [1] "discrete"
#> 
#> $is_step_ahead
#> [1] TRUE
#> 
#> $time_unit
#> [1] "week"
#> 
#> attr(,"class")
#> [1] "target_metadata_item" "list"                
#> attr(,"schema_id")
#> [1] "https://raw.githubusercontent.com/hubverse-org/schemas/main/v3.0.0/tasks-schema.json"