Package index • vctrs

User FAQ
`faq-compatibility-types`	FAQ - How is the compatibility of vector types decided?
`faq-error-incompatible-attributes`	FAQ - Error/Warning: Some attributes are incompatible
`faq-error-scalar-type`	FAQ - Error: Input must be a vector
Developer FAQ
`howto-faq-coercion-data-frame`	FAQ - How to implement ptype2 and cast methods? (Data frames)
`howto-faq-coercion`	FAQ - How to implement ptype2 and cast methods?
`howto-faq-fix-scalar-type-error`	FAQ - Why isn't my class treated as a vector?
`theory-faq-coercion`	FAQ - How does coercion work in vctrs?
`theory-faq-recycling` `vector_recycling_rules`	FAQ - How does recycling work in vctrs and the tidyverse?
`reference-faq-compatibility`	FAQ - Is my class compatible with vctrs?
Internal FAQ
`internal-faq-matches-algorithm`	Internal FAQ - Implementation of `vec_locate_matches()`
`internal-faq-ptype2-identity`	Internal FAQ - `vec_ptype2()`, `NULL`, and unspecified vectors
Genericity
`vec_ptype2()`	Find the common type for a pair of vectors
`vec_cast()` `vec_cast_common()`	Cast a vector to a specified type
`vec_proxy()` `vec_restore()`	Proxy and restore
`vec_proxy_compare()` `vec_proxy_order()`	Comparison and order proxy
`vec_proxy_equal()`	Equality proxy
Foundations
`vec_data()`	Extract underlying data
`vec_ptype()` `vec_ptype_common()` `vec_ptype_show()`	Find the prototype of a set of vectors
`vec_size()` `vec_size_common()` `list_sizes()` `vec_is_empty()`	Number of observations
`obj_is_vector()` `obj_check_vector()` `vec_check_size()`	Vector checks
`obj_is_list()` `obj_check_list()` `list_all_vectors()` `list_check_all_vectors()` `list_all_size()` `list_check_all_size()`	List checks
Combining
`vec_c()`	Combine many vectors into one vector
`vec_interleave()`	Interleave many vectors into one vector
`vec_rbind()` `vec_cbind()`	Combine many data frames into one data frame
`name_spec`	Name specifications
Slicing and recycling
`vec_init()`	Initialize a vector
`vec_slice()` `vec_slice<-`() `vec_assign()`	Get or set observations in a vector
`vec_recycle()` `vec_recycle_common()`	Vector recycling
`vec_chop()` `list_unchop()`	Chopping
`list_drop_empty()`	Drop empty elements from a list
Assigning
`vec_slice()` `vec_slice<-`() `vec_assign()`	Get or set observations in a vector
`vec_fill_missing()`	Fill in missing values with the previous or following value
Equality and ordering
`vec_equal()`	Equality
`vec_detect_complete()`	Complete
`vec_detect_missing()` `vec_any_missing()`	Missing values
`vec_compare()`	Compare two vectors
Sorting
`vec_order()` `vec_sort()`	Order and sort vectors
`vec_rank()`	Compute ranks
Matching and splitting
`vec_count()`	Count unique values in a vector
`vec_duplicate_any()` `vec_duplicate_detect()` `vec_duplicate_id()`	Find duplicated values
`vec_unique()` `vec_unique_loc()` `vec_unique_count()`	Find and count unique values
`vec_match()` `vec_in()`	Find matching observations across vectors
`vec_locate_matches()`	Locate observations matching specified conditions
`vec_set_intersect()` `vec_set_difference()` `vec_set_union()` `vec_set_symmetric_difference()`	Set operations
`vec_split()`	Split a vector into groups
Sequences and repetitions
`vec_rep()` `vec_rep_each()` `vec_unrep()`	Repeat a vector
`vec_seq_along()` `vec_init_along()`	Useful sequences
`vec_identify_runs()` `vec_run_sizes()`	Runs
`vec_expand_grid()`	Create a data frame from all combinations of the inputs
New classes
`list_of()` `as_list_of()` `is_list_of()` `vec_ptype2(<vctrs_list_of>)` `vec_cast(<vctrs_list_of>)`	`list_of` S3 class for homogenous lists
Data frame
`df_list()`	Collect columns for data frame construction
`new_data_frame()`	Assemble attributes for data frame construction
`data_frame()`	Construct a data frame
`df_ptype2()` `df_cast()` `tib_ptype2()` `tib_cast()`	Coercion between two data frames
User tools
`%0%`	Default value for empty vectors
Developer tools
`new_vctr()`	vctr (vector) S3 class
`vec_ptype_full()` `vec_ptype_abbr()`	Vector type as a string
`new_partial()` `is_partial()` `vec_ptype_finalise()`	Partial type
`stop_incompatible_type()` `stop_incompatible_cast()` `stop_incompatible_op()` `stop_incompatible_size()` `allow_lossy_cast()`	Custom conditions for vctrs package
`new_rcrd()`	rcrd (record) S3 class
`fields()` `n_fields()` `field()` `field<-`()	Tools for accessing the fields of a record.
`s3_register`	Register a method for a suggested dependency
`vec_arith()` `vec_arith_base()` `MISSING()`	Arithmetic operations
`vec_math()` `vec_math_base()`	Mathematical operations
`unspecified()`	A 1d vector of unspecified type
`vec_default_cast()` `vec_default_ptype2()`	Default cast and ptype2 methods
`vec_as_names()`	Retrieve and repair names
`vec_names2()` `vec_names()` `vec_set_names()`	Get or set the names of a vector
`vec_as_location()` `num_as_location()` `vec_as_location2()` `num_as_location2()`	Create a vector of locations
`vec_as_subscript()` `vec_as_subscript2()`	Convert to a base subscript type

Reference

User FAQ

Developer FAQ

Internal FAQ

Genericity

Foundations

Combining

Slicing and recycling

Assigning

Equality and ordering

Sorting

Matching and splitting

Sequences and repetitions

New classes

Data frame

User tools

Developer tools