Spatiotemporal Regression Task

This task specializes TaskRegr for spatiotemporal regression problems.

A spatial example task is available via tsk("cookfarm_mlr3").

The coordinate reference system passed during initialization must match the one which was used during data creation, otherwise offsets of multiple meters may occur. By default, coordinates are not used as features. This can be changed by setting coords_as_features = TRUE.

Super classes

mlr3::Task -> mlr3::TaskSupervised -> mlr3::TaskRegr -> TaskRegrST

Active bindings

crs

(character(1))
Returns coordinate reference system of the task.

coordinate_names

(character())
Returns coordinate names.

coords_as_features

(logical(1))
If TRUE, coordinates are used as features.

Methods

Public methods

• TaskRegrST$new()

• TaskRegrST$coordinates()

• TaskRegrST$print()

• TaskRegrST$clone()

Inherited methods

• mlr3::Task$add_strata()
• mlr3::Task$cbind()
• mlr3::Task$data()
• mlr3::Task$droplevels()
• mlr3::Task$filter()
• mlr3::Task$format()
• mlr3::Task$formula()
• mlr3::Task$head()
• mlr3::Task$help()
• mlr3::Task$levels()
• mlr3::Task$missings()
• mlr3::Task$rbind()
• mlr3::Task$rename()
• mlr3::Task$select()
• mlr3::Task$set_col_roles()
• mlr3::Task$set_levels()
• mlr3::Task$set_row_roles()
• mlr3::TaskRegr$truth()

---

Method new()

Creates a new instance of this R6 class. The function as_task_regr_st() provides an alternative way to construct classification tasks.

Usage

TaskRegrST$new(
  id,
  backend,
  target,
  label = NA_character_,
  coordinate_names,
  crs = NA_character_,
  coords_as_features = FALSE,
  extra_args = list()
)

Arguments

id

(character(1))
Identifier for the new instance.

backend

(DataBackend)
Either a DataBackend, or any object which is convertible to a DataBackend with as_data_backend(). E.g., am sf will be converted to a DataBackendDataTable.

target

(character(1))
Name of the target column.

label

(character(1))
Label for the new instance.

coordinate_names

(character(1))
The column names of the coordinates in the data.

crs

(character(1))
Coordinate reference system. WKT2 or EPSG string.

coords_as_features

(logical(1))
If TRUE, coordinates are used as features.

extra_args

(named list())
Named list of constructor arguments, required for converting task types via convert_task().

---

Method coordinates()

Returns coordinates of observations.

Usage

TaskRegrST$coordinates(row_ids = NULL)

Arguments

row_ids

(integer())
Vector of rows indices as subset of task$row_ids.

Returns

data.table::data.table()

---

Method print()

Print the task.

Usage

TaskRegrST$print(...)

Arguments

...

Arguments passed to the $print() method of the superclass.

---

Method clone()

The objects of this class are cloneable with this method.

Usage

TaskRegrST$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.