Package 'isstatic'

Title: Dependency-Free Object Tests
Description: Convenience functions for checking class inheritance, extracting attributes, basic type conversion, and miscellaneous string manipulation. working with sf, ggplot2, and other packages.
Authors: Eli Pousson [aut, cre, cph] (ORCID: <https://orcid.org/0000-0001-8280-1706>)
Maintainer: Eli Pousson <[email protected]>
License: CC0
Version: 0.1.0.9000
Built: 2026-05-09 20:41:57 UTC
Source: https://github.com/elipousson/isstatic

Help Index

Convert an alphabetical character object from A to Z into a corresponding integer

Description

Integers and NA values are passed as is. Double or characters with no corresponding Roman numeral are converting to NA values.

Usage

alpha_to_int(x, dict = LETTERS, n = 1, quiet = TRUE, call = parent.frame())

Arguments

x

Character vector of length n strings to compare to dict. Typically, letters from "A" to "Z". Case sensitive.
dict

Character vector to match to x. Default: LETTERS.
n

Maximum character length for non-NA objects permitted. Set to NULL or >1 if dict includes objects with more than one character.
quiet

If TRUE, suppress warnings for introduction of NA values through coercion.
call

Default: parent.frame(). Passed to input checking functions to improve error messages.

Value

A length 1 integer between 1 and 26.

Convert a numeric bearing value to the closest cardinal bearing

Description

Convert a numeric bearing value to the closest cardinal bearing

Usage

as_cardinal_bearing(x, winds = 8, cols = c("bearing", "cardinal_bearing"))

Arguments

x

A numeric vector with degrees or a data.frame with column name matching the first name in cols.
winds

Number of winds to use for results (4, 8, or 16).
cols

A length 2 character vector where the first value is a column name containing bearing values and the second is the name of the new column added to the data.frame. Required if x is a data.frame.

Value

A named numeric vector with cardinal bearings (and wind names) or a data.frame with an added column containing the cardinal bearings.

Coerce a sf, sfc, or bbox object to a coordinate reference system

Description

This function should be updated to support stars and terra objects.

Usage

as_crs(x, input = TRUE)

is_lonlat_crs(x, crs = c("EPSG:4326", "EPSG:4269"))

Arguments

x

A sf, sfc, or bbox object to coerce into a CRS.
input

If TRUE (default), return only the "input" component of the crs object. If FALSE, return the full crs object.
crs

For is_lonlat_crs, coordinate reference system to use as lonlat crs.

as.integer with option to suppress warnings for NA coercion

Description

as.integer with option to suppress warnings for NA coercion

Usage

as_integer(x, quiet = TRUE)

Arguments

x

object to be coerced or tested.
quiet

If TRUE, suppress warnings about creation of NA values through coercion of object types. Default to TRUE.

Convert a numeric vector to a vector of numbered labels

Description

This function allows the creation of numbered labels for a vector using a range of numbering styles.

Usage

as_numbered_labels(
  x,
  labels = "arabic",
  start = NULL,
  suffix = NULL,
  base = 26,
  cols = "num_label",
  pad = NULL,
  side = "left",
  quiet = TRUE,
  call = parent.frame()
)

Arguments

x

An integer or other vector or a data.frame. An integer vector or integer column is used as the number that is converted based on the label style. If x is not an integer or data.frame with an integer column, the numbering is created based on seq_along().
labels

Label style. Options include "arabic", "alph", "Alph", "alpha", "Alpha", "roman", or "Roman".
start

Starting number or value. Letters are supported if label style is "alph", "Alph", "alpha", or "Alpha" and Roman numerals are supported if label is "roman" or "Roman".
suffix

Suffix character to follow number labels. For example, if x = 1 and suffix = "." the returned label would be "1."
base

Base used in alphabetical number labels. Highest letter to use for alphabetical numbers. Single digit letters (A to Z) or numbers 1 to 26 are supported. For example, if base is 3, alphabetical labels for numbers higher than 3 have the prior value prefixed so 3 would be "C" and 4 would be "AA". Defaults to 26 which converts 27 to "AA", 53 to "BA", etc.
cols

Column name to use for added column for number labels when x is a data.frame. Defaults to "num_label". If cols is length 2, the first item in the vector is assumed to be the column name from the data.frame to use as x and the second item is used as the column name for the added column with number labels.
pad, side

If pad is not NULL, pass pad and side to str_pad() added from the stringstatic::str_pad() package.
quiet

If TRUE, suppress warnings about creation of NA values through coercion of object types. Default to TRUE.
call

Default: parent.frame(). Passed to input checking functions to improve error message traceback.

Value

  • If x is a vector, function returns numeric vector if labels is "arabic" or a character vector otherwise.

  • If x is a data.frame, as_numbered_labels() returns a modified data.frame with an added column with a name matching the second value of the cols parameter.

What is the orientation of a numeric aspect ratio?

Description

What is the orientation of a numeric aspect ratio?

Usage

as_orientation(x, tolerance = 0.1, cols = c("width", "height"))

Arguments

x

A numeric vector with an aspect ratio or a data.frame with width and height column (using width and height values from columns matching the cols parameter).
tolerance

Positive numeric value above or below 1 used to determine if an aspect ratio is square, landscape, or portrait.
cols

Name of width and height column if x is a data.frame object.

Value

A character vector of orientations of the same length as x or, if x is a data.frame, the same length as the number of rows in x.

as.roman with option to suppress warnings for NA coercion

Description

as.roman with option to suppress warnings for NA coercion

Usage

as_roman(x, quiet = TRUE)

Arguments

x

a numeric or character vector of arabic or roman numerals.
quiet

If TRUE, suppress warnings about creation of NA values through coercion of object types. Default to TRUE.

Coerce a sf object to a sfc object

Description

If possible, function should be updated to support bbox objects or other spatial data classes.

Usage

as_sfc(x)

Arguments

x

A sf object to coerce.

Combine multiple words into a single string

Description

This is a wrapper function of xfun::join_words().

Usage

combine_words(
  words,
  sep = ", ",
  and = " and ",
  before = "",
  after = before,
  oxford_comma = TRUE
)

Value

A character string

Author(s)

Yihui Xie [email protected] (ORCID)

Source

Adapted from knitr::combine_words() in the knitr package.

Helper to return a regex based on side

Description

Helper to return a regex based on side

Usage

digit_pattern(pattern = "[0-9]+", side = NULL)

Construct path to file ignoring NULL values for filename or path

Description

A replacement for file.path()

Usage

file_path(
  ...,
  path = NULL,
  filename = NULL,
  fsep = .Platform$file.sep,
  allow_null = FALSE,
  call = parent.frame()
)

Arguments

...

Additional strings to pass before path and filename.
path

Path name. Optional if filename is supplied.
filename

File name. Optional if path is supplied.
fsep

the path separator to use (assumed to be ASCII).
allow_null

If TRUE, return NULL if filename and path are NULL and no additional strings are provided to .... If FALSE, stop if filename and path are NULL and no additional strings are provided to ...

Does string contain the specified file type or any file extension?

Description

Check if string contains any filetype or the provided filetype. If string is NULL, returns FALSE.

Usage

has_fileext(string = NULL, fileext = NULL, ignore.case = FALSE)

Arguments

string

String to be tested with or without filetype. Defaults to NULL.
fileext

File type to test against. Optional.
ignore.case

If FALSE, the pattern matching is case sensitive. If TRUE, case is ignored.

See Also

is_fileext_path()

Does string contain the specified file type or any file extension?

Description

Alternate naming convention for has_fileext()

Usage

has_filetype(string = NULL, filetype = NULL, ignore.case = FALSE)

Arguments

string

String to be tested with or without filetype. Defaults to NULL.
filetype

File type to test against. Optional.
ignore.case

If FALSE, the pattern matching is case sensitive. If TRUE, case is ignored.

Is the length of x between two values?

Description

Is the length of x between two values?

Usage

has_len_between(x, left = 1, right = left)

has_min_length(x, min)

has_max_length(x, max)

Arguments

x

Object to check.
left, right

Min and max values to check if the length of x is between.
min

Min value used by has_min_length().
max

Max value used by has_max_length().

  • has_same_crs(): Do two sf, sfc, or bbox objects use the same coordinate reference system?

Description

  • has_same_crs(): Do two sf, sfc, or bbox objects use the same coordinate reference system?

Usage

has_same_crs(x, y, ...)

Arguments

x, y

sf, sfc, or bbox objects to be compared.
...

Additional parameters passed to identical() by has_same_crs().

Do two object have an identical length?

Description

Do two object have an identical length?

Do two object have an identical length?

Usage

has_same_len(x, y, ...)

has_same_len(x, y, ...)

Arguments

x, y

Two strings or character vectors to compare.
...

Additional parameters passed to identical()

Convert a integer into a corresponding letter or multi-letter string

Description

Character values in the provided dict (default to letters "A" to "Z") are passed as is. Non-integer numeric values or characters that are not found in the provided dict are converting to NA values.

Usage

int_to_alpha(x, suffix = NULL, base = 26, dict = LETTERS, quiet = TRUE)

Arguments

x

An integer vector or a vector that can be coerced to an integer vector
suffix

Suffix character to follow alpha character, e.g. if x = 1 and suffix = "." the returned label would be "A.". suffix is also used to separate values when x is greater than base, e.g. x = 27 and suffix = "." returns "A.A." Defaults to NULL.
base

If base is not numeric, it is converted to an integer with alpha_to_int().
dict

Character vector to compare to x. Default: LETTERS.
quiet

If TRUE, suppress warnings for introduction of NA values through coercion.

Value

An integer vector composed of objects between 1 and 26 with the same length as x.

Source

Adapted from the recursive solution provided by G. Grothendieck in a May 31, 2017 StackOverflow answer.

Do all items in a list or vector return TRUE from a predicate function?

Description

Do all items in a list or vector return TRUE from a predicate function?

  • is_all_na(): Are all items in a list or vector NA values?

Usage

is_all(x, FUN, ...)

is_all_null(x)

is_all_na(x)

Arguments

x

A list or vector passed to X parameter of vapply().
FUN

the function to be applied to each element of X: see ‘Details’. In the case of functions like +, %*%, the function name must be backquoted or quoted.
...

Arguments passed on to base::vapply

USE.NAMES

logical; if TRUE and if X is character, use X as names for the result unless it had names already. Since this argument follows ... its name cannot be abbreviated.

FUN.VALUE

a (generalized) vector; a template for the return value from FUN. See ‘Details’.

Value

TRUE if FUN returns TRUE for all elements of x or FALSE if any element returns FALSE.

See Also

is_any()

Is all of x in y?

Description

Is all of x in y?

Usage

is_all_in(x, y)

Arguments

x

Object to be tested.
y

Vector to compare x to.

Do any items in a list or vector return TRUE from a predicate function?

Description

Do any items in a list or vector return TRUE from a predicate function?

  • is_any_na(): Is any item in a list or vector a NA value?

  • is_none(): Is no item in a list or vector return TRUE from a predicate function?

Do any items in a list or vector return TRUE from a predicate function?

  • is_any_na(): Is any item in a list or vector a NA value?

Usage

is_any(x, FUN, ...)

is_any_null(x)

is_any_na(x)

is_none(x, FUN, ...)

is_none_null(x)

is_any(x, FUN, ...)

is_any_null(x)

is_any_na(x)

Arguments

x

A list or vector passed to vapply().
FUN

the function to be applied to each element of X: see ‘Details’. In the case of functions like +, %*%, the function name must be backquoted or quoted.
...

Arguments passed on to base::vapply, base::vapply

USE.NAMES

logical; if TRUE and if X is character, use X as names for the result unless it had names already. Since this argument follows ... its name cannot be abbreviated.

FUN.VALUE

a (generalized) vector; a template for the return value from FUN. See ‘Details’.

Value

TRUE if FUN returns TRUE for any element of x or FALSE if all elements return FALSE.

TRUE if FUN returns TRUE for any element of x or FALSE if all elements return FALSE.

See Also

is_all()

is_all()

Are any of x in y?

Description

Are any of x in y?

Usage

is_any_in(x, y)

Arguments

x

Object to be tested.
y

Vector to compare x to.

Test if a character vector consists of blank strings

Description

Return a logical vector indicating if elements of a character vector are blank (white spaces or empty strings).

Usage

is_blank(x)

Arguments

x

A character vector.

Value

TRUE for blank elements, or FALSE otherwise.

Author(s)

Yihui Xie [email protected] (ORCID)

Source

Adapted from xfun::is_blank() in the xfun package.

Examples

is_blank("")
is_blank("abc")
is_blank(c("", "  ", "\n\t"))
is_blank(c("", " ", "abc"))

Is x a file or directory?

Description

is_file() is a wrapper for base::file.exists() that allows the exclusion of directories and returning named vectors. is_dir() is a wrapper for base::dir.exists() that supports vector inputs rather than single strings. character(0) inputs return FALSE.

Usage

is_file(x, include_dirs = FALSE, use_names = FALSE)

is_dir(x, use_names = FALSE)

Arguments

include_dirs

If TRUE, return TRUE for any value of x that is a directory path. If FALSE (default), return FALSE for directory paths.
use_names

If TRUE, return a logical vector where the names match the values of the input vector x. Defaults to FALSE.

Does this text end in the provided file extension?

Description

Does this text end in the provided file extension?

is_geojson_fileext: Does this text end with a GeoJSON file extension?

is_csv_fileext: Does this text end with a CSV file extension?

is_excel_fileext: Does this text end with a XLS or XLSX file extension?

is_rdata_fileext: Does this text end with a rds, rda, or RData file extension?

is_rds_fileext: Does this text end with a rds file extension?

is_rda_fileext: Does this text end with a rda file extension?

is_zip_fileext: Does this text end with a zip file extension?

Usage

is_fileext_path(x, fileext, ignore.case = TRUE)

is_geojson_fileext(x, ignore.case = TRUE)

is_csv_fileext(x, ignore.case = TRUE)

is_excel_fileext(x, ignore.case = TRUE)

is_rdata_fileext(x, ignore.case = TRUE)

is_rds_fileext(x, ignore.case = TRUE)

is_rda_fileext(x, ignore.case = TRUE)

is_zip_fileext(x, ignore.case = TRUE)

Arguments

x

A character vector to check for matches, or an object which can be coerced by as.character() to a character vector.
fileext

A file extension to compare to x. Required. If a vector of multiple extensions are provided, returns TRUE for any match.
ignore.case

logical. if FALSE, the pattern matching is case sensitive and if TRUE, case is ignored during matching.

See Also

has_fileext()

Does this text end in the specified filetype?

Description

Does this text end in the specified filetype?

Usage

is_filetype_path(x, filetype, ignore.case = TRUE)

Arguments

x

A character vector to check for matches, or an object which can be coerced by as.character() to a character vector.
filetype

A file extension (or multiple file extensions) to compare to x. Required.
ignore.case

logical. if FALSE, the pattern matching is case sensitive and if TRUE, case is ignored during matching.

Is this a gg class object?

Description

Is this a gg class object?

Is this a ggplot class object?

Is this a ggproto class object?

Is this a patchwork class object?

Usage

is_gg(x)

is_ggplot(x)

is_ggproto(x)

is_patchwork(x)

Arguments

x

Object to be tested.

Do all items in this list inherit the gg class?

Description

Do all items in this list inherit the gg class?

Usage

is_gg_list(x)

Arguments

x

Object to be tested.

Do all items in this list inherit the provided class?

Description

Do all items in this list inherit the provided class?

Usage

is_list_all(x, what = NULL)

Arguments

x

Object to be tested.
what

A character vector naming classes.

Is this object a named list or character vector?

Description

Is this object a named list or character vector?

Does this object have all of the provided names?

Does this object have any of the provided names?

Usage

is_named(x)

has_all_names(x, name)

has_any_names(x, name)

Arguments

x

A data frame or another named object.
name

Element name(s) to check.

See Also

rlang::is_named()

Are none of x in y?

Description

Are none of x in y?

Usage

is_none_in(x, y)

Arguments

x

Object to be tested.
y

Vector to compare x to.

Is this a sf class object?

Description

Is this a sf class object?

Is this a sfc class object?

Is this a sfg class object?

Is this a bbox class object?

Is this a sf, sfc, or bbox class object?

Is this a RasterLayer class object?

Is this a Spatial class (sp) object?

Usage

is_sf(x)

is_sfc(x)

is_sfg(x)

is_bbox(x)

is_sf_ext(x, ext = TRUE)

is_raster(x)

is_sp(x)

Arguments

x

An object to be tested with inherits()
ext

If TRUE, return TRUE is x is a sf, sfc, or bbox object. If FALSE, only check if x is an sf object. If ext is a character object, it is passed to the what parameter of inherits() with sf.

See Also

as_crs()

Do all items in this list inherit the sf class?

Description

Do all items in this list inherit the sf class?

Usage

is_sf_list(x)

Arguments

x

Object to be tested.

Is this a unit class object?

Description

Is this a unit class object?

Is this a margin class object?

Usage

is_unit(x)

is_margin(x)

Arguments

x

Object to be tested.

Is this a units class object?

Description

Is this a units class object?

Usage

is_units(x)

Arguments

x

Object to be tested.

Is an object a URL?

Description

Is an object a URL?

  • is_esri_url(): Is an object an ArcGIS MapServer or FeatureServer URL?

Usage

is_url(x)

is_esri_url(x)

is_gsheet_url(x)

is_gist_url(x)

is_gmap_url(x)

Arguments

x

A object to be tested.

Apply a function to each element of a vector.

Description

Apply a function to each element of a vector.

Usage

map_chr(.x, .f, ...)

Author(s)

Winston Chang [email protected]

Source

purr-like functions in staticimports package

Simple helper for pluralizing words

Description

Simple helper for pluralizing words

Usage

plural_words(
  words,
  n = 1,
  suffix = "s",
  before = "",
  after = "",
  replacement = NULL
)

Convert a Roman numeral character object into a corresponding integer

Description

Integers and NA objects are passed as is. Double numeric objects or characters with no corresponding Roman numeral are converting to NA values.

Usage

roman_to_int(x, quiet = TRUE)

Arguments

x

An integer vector or a character vector with characters representing Roman numerals.
quiet

If TRUE, suppress warnings for introduction of NA values through coercion.

Set start number for numeric vector x

Description

Helper for as_numbered_labels().

Usage

set_start_number(x, start = NULL, labels = "arabic")

Arguments

x

An integer or other vector or a data.frame. An integer vector or integer column is used as the number that is converted based on the label style. If x is not an integer or data.frame with an integer column, the numbering is created based on seq_along().
start

Starting number or value. Letters are supported if label style is "alph", "Alph", "alpha", or "Alpha" and Roman numerals are supported if label is "roman" or "Roman".
labels

Label style. Options include "arabic", "alph", "Alph", "alpha", "Alpha", "roman", or "Roman".

Join multiple strings into a single string

Description

Dependency-free drop-in alternative for stringr::str_c().

Usage

str_c(..., sep = "", collapse = NULL)

Arguments

...

One or more character vectors. Zero length arguments are removed. Short arguments are recycled to the length of the longest.

Like most other R functions, missing values are "infectious": whenever a missing value is combined with another string the result will always be missing. Use str_replace_na() to convert NA to "NA"
sep

String to insert between input vectors.
collapse

Optional string used to combine input vectors into single string.

Value

If collapse = NULL (the default) a character vector with length equal to the longest input string. If collapse is non-NULL, a character vector of length 1.

Source

Adapted from the stringr package.

Detect the presence or absence of a pattern in a string

Description

Dependency-free drop-in alternative for stringr::str_detect().

Usage

str_detect(string, pattern, negate = FALSE)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
pattern

Pattern to look for.

The default interpretation is a regular expression, as described in base::regex. Control options with regex().

Match a fixed string (i.e. by comparing only bytes), using fixed(). This is fast, but approximate.
negate

If TRUE, return non-matching elements.

Value

A logical vector.

Source

Adapted from the stringr package.

Extract matching patterns from a string

Description

Dependency-free drop-in alternative for stringr::str_extract().

Usage

str_extract(string, pattern)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
pattern

Pattern to look for.

The default interpretation is a regular expression, as described in base::regex. Control options with regex().

Match a fixed string (i.e. by comparing only bytes), using fixed(). This is fast, but approximate.

Value

A character matrix. The first column is the complete match, followed by one column for each capture group.

Source

Adapted from the stringr package.

Add, remove, or extract file extensions from character vectors

Description

These function uses stringstatic::str_c(), stringstatic::str_remove() and stringstatic::str_extract() and works to:

Usage

str_add_fileext(string, fileext = NULL)

str_remove_fileext(string, fileext = NULL)

str_extract_fileext(string, fileext = NULL)

Arguments

string

Character vector of any length. Required.
fileext

File extension. Optional. Defaults to NULL.

See Also

Examples

str_add_fileext("image", "jpeg")

str_remove_fileext(c("file.txt", "word.docx"), "docx")

str_extract_fileext(c("file1.pdf", "file2"))

str_extract_fileext(c("image1.png", "image2.jpeg"), "jpeg")

Compute the length of a string

Description

Dependency-free drop-in alternative for stringr::str_length().

Usage

str_length(string)

Arguments

string

Input vector. Either a character vector, or something coercible to one.

Value

A numeric vector the same length as string.

Source

Adapted from the stringr package.

Get the n most frequent or least frequent appearing values in a vector

Description

This function does not address ties in frequency.

Usage

str_n_freq(string = NULL, n = NULL, decreasing = TRUE)

Arguments

string

A character vector.
n

The number of values to return based on frequency of appearance. Defaults to NULL which returns all unique values from x.
decreasing

Passed to sort()

Duplicate and concatenate strings within a character vector

Description

Dependency-free drop-in alternative for stringr::str_pad().

Usage

str_pad(
  string,
  width,
  side = c("left", "right", "both"),
  pad = " ",
  use_width = TRUE
)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
width

Minimum width of padded strings.
side

Side on which padding character is added (left, right or both).
pad

Single padding character (default is a space).
use_width

If FALSE, use the length of the string instead of the width; see str_width()/str_length() for the difference.

Value

A character vector.

Author(s)

Eli Pousson [email protected] (ORCID)

Alexander Rossell Hayes [email protected] (ORCID)

Source

Adapted from the stringr package.

Modify digits within strings

Description

str_replace_digits(): Replace digits with a string optionally incrementing the digits str_pad_digits(): Pad a string with digits str_extract_digits(): Extract digits from a string

Usage

str_pad_digits(string, pad = "0", side = "left", width = NULL)

str_extract_digits(string, pattern = "[0-9]+", side = NULL)

str_replace_digits(string, replacement, pad = "0", side = "left", width = NULL)

str_increment_digits(string, increment = TRUE, ...)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
pad

Single padding character added to digits in string; defaults to "0"
side

Side on which padding character is added (left, right or both).
width

Minimum width of padded strings.
pattern

Pattern to look for.

The default interpretation is a regular expression, as described in base::regex. Control options with regex().

Match a fixed string (i.e. by comparing only bytes), using fixed(). This is fast, but approximate.
replacement

A character vector of replacements. Should be either length one, or the same length as string or pattern. References of the form ⁠\1⁠, ⁠\2⁠, etc. will be replaced with the contents of the respective matched group (created by ⁠()⁠).

To replace the complete string with NA, use replacement = NA_character_.

Using a function for replacement is not yet supported.
increment

If TRUE, increment digits in string by 1. If numeric, increment digits in string by value. If NULL, 0, or if no digits are present in string, return string as is.
...

Passed to str_replace_digits()

Remove matched patterns in a string

Description

Dependency-free drop-in alternative for stringr::str_remove().

Usage

str_remove(string, pattern)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
pattern

Pattern to look for.

The default interpretation is a regular expression, as described in base::regex. Control options with regex().

Match a fixed string (i.e. by comparing only bytes), using fixed(). This is fast, but approximate.

Value

A character vector.

Source

Adapted from the stringr package.

Replace matched patterns in a string

Description

Dependency-free drop-in alternative for stringr::str_replace().

Usage

str_replace(string, pattern, replacement)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
pattern

Pattern to look for.

The default interpretation is a regular expression, as described in base::regex. Control options with regex().

Match a fixed string (i.e. by comparing only bytes), using fixed(). This is fast, but approximate.
replacement

A character vector of replacements. Should be either length one, or the same length as string or pattern. References of the form ⁠\1⁠, ⁠\2⁠, etc. will be replaced with the contents of the respective matched group (created by ⁠()⁠).

To replace the complete string with NA, use replacement = NA_character_.

Using a function for replacement is not yet supported.

Value

A character vector.

Source

Adapted from the stringr package.

Replace matched patterns in a string

Description

Dependency-free drop-in alternative for stringr::str_replace_all().

Usage

str_replace_all(string, pattern, replacement)

Arguments

string

Input vector. Either a character vector, or something coercible to one.
pattern

Pattern to look for.

The default interpretation is a regular expression, as described in base::regex. Control options with regex().

Match a fixed string (i.e. by comparing only bytes), using fixed(). This is fast, but approximate.
replacement

A character vector of replacements. Should be either length one, or the same length as string or pattern. References of the form ⁠\1⁠, ⁠\2⁠, etc. will be replaced with the contents of the respective matched group (created by ⁠()⁠).

To perform multiple replacements in each element of string, pass a named vector (c(pattern1 = replacement1)) to str_replace_all().

To replace the complete string with NA, use replacement = NA_character_.

Using a function for replacement is not yet supported.

Value

A character vector.

Source

Adapted from the stringr package.

Compute the width of a string

Description

Dependency-free drop-in alternative for stringr::str_width(). Results for non-ASCII characters may be inaccurate in R < 4.0.

Usage

str_width(string)

Arguments

string

Input vector. Either a character vector, or something coercible to one.

Value

A numeric vector the same length as string.

Source

Adapted from the stringr package.

Convert to a common sentence case

Description

Convert to a common sentence case

Usage

tosentence(x)

Arguments

x

a character vector, or an object that can be coerced to character by as.character().

Author(s)

Joachim Schork [email protected]

Source

Statistics Globe

Replace spaces in string with underscores

Description

Replace spaces in string with underscores

Usage

underscore(string)

Arguments

string

String to transform by replacing spaces with underscores.