StrPos

a character vector in which to search for the pattern, or an object which can be coerced by as.character to a character vector.

character string (search string) containing the pattern to be matched in the given character vector. This can be a character string or a regular expression.

pattern

integer, defining the start position for the search within x. The result will then be relative to the begin of the truncated string. Will be recycled.

the dots are passed to the function <code><a rd-options="" href="/link/regexpr?package=DescTools&version=0.99.19" data-mini-rdoc="DescTools::regexpr">regexpr</a></code>.

Returns the numeric position of the first occurrence of a substring within a string. If the search string is not found, the result will be <code>NA</code>.

utilities

character

A collection of miscellaneous basic statistic functions and convenience wrappers for efficiently describing data. The author's intention was to create a toolbox, which facilitates the (notoriously time consuming) first descriptive tasks in data analysis, consisting of calculating descriptive statistics, drawing graphical summaries and reporting the results. The package contains furthermore functions to produce documents using MS Word (or PowerPoint) and functions to import data from Excel. Many of the included functions can be found scattered in other packages and other sources written partly by Titans of R. The reason for collecting them here, was primarily to have them consolidated in ONE instead of dozens of packages (which themselves might depend on other packages which are not needed at all), and to provide a common and consistent interface as far as function and arguments naming, NA handling, recycling rules etc. are concerned. Google style guides were used as naming rules (in absence of convincing alternatives). The 'camel style' was consequently applied to functions borrowed from contributed R packages as well.

Andri Signorell

DescTools

Tools for Descriptive Statistics

StrPos function

a character vector in which to search for the pattern, or an object which can be coerced by as.character to a character vector.



character string (search string) containing the pattern to be matched in the given character vector. This can be a character string or a regular expression.



integer, defining the start position for the search within x. The result will then be relative to the begin of the truncated string. Will be recycled.



the dots are passed to the function <code><a rd-options='' href='regexpr'>regexpr</a></code>.

Returns the numeric position of the first occurrence of a substring within a string. If the search string is not found, the result will be <code>NA</code>.

StrPos: Find Position of First Occurrence Of a String

Description

Usage

Arguments

Value

Details

See Also

Examples