Function reference • teal.transform

Data extract constructors

Functions used to create transform instructions for teal applications.

add_no_selected_choices(): Add empty choice to choices selected

all_choices(): Bare constructor for all_choices object

check_no_multiple_selection(): Checks that the extract_input specification does not allow multiple selection

choices_labeled() print(<choices_labeled>): Set "<choice>:<label>" type of names

choices_selected() is.choices_selected(): Choices selected

data_extract_spec(): Data extract input for teal modules

filter_spec(): Data extract filter specification

get_extract_datanames(): Gets names of the datasets from a list of data_extract_spec objects

no_selected_as_NULL(): Check select choices for no choice made

select_spec() select_spec.delayed_data() select_spec.default(): Column selection input specification

split_by_sep(): Split by separator (matched exactly)

value_choices(): Value labeling and filtering based on variable relationship

variable_choices(): Variable label extraction and custom selection from data

resolve(): Resolve delayed inputs by evaluating the code within the provided datasets

resolve_delayed(): Resolve delayed inputs by evaluating the code within the provided datasets

Data extract modules

teal modules to generate transform expressions

data_extract_multiple_srv(): Creates a named list of data_extract_srv output

data_extract_ui(): teal data extraction module user-interface

data_extract_srv(): Extraction of the selector(s) details

datanames_input(): Help text with available datasets input

merge_expression_module(): Merge expression module

merge_expression_srv(): Data merge module server

get_dataset_prefixed_col_names(): Returns non-key column names from data

get_anl_relabel_call(): Gets the relabel call

get_merge_call(): Get merge call from a list of selectors

get_relabel_call(): Create relabel call from named character

is_single_dataset(): Verify uniform dataset source across data extract specification

list_extract_spec(): Make sure that the extract specification is in list format

merge_datasets(): Merge the datasets on the keys

compose_and_enable_validators(): Function to compose validators from data_extract_multiple_srv

Human-readable formatting of a data extract object

format_data_extract(): Formatting data extracts