findvar: Find variables by name

In rccmisc: Miscellaneous R Functions for Swedish Regional Cancer Centers

Description

Function to seacrh for a variable by its name. See the "Value" section for more details on the different functions.

Usage

findvar_fun(df, ...)

findvar_in_df(pattern, df, ...)

findvar_anywhere(pattern, envir = .GlobalEnv, ...)

Arguments

df	A data.frame from where the column names should be identified when returned function applied
...	Arguments passed to grep
pattern	A character string with name (or part of name) of the variables to find.
envir	environment holding data.frames where to search for the variables (the Global environment as default).

Value

• findvar_fun: A function with argument param to search for param in df. See example!

• findvar_in_df: A vector with variable names from df matching the pattern.

• findvar_anywhere: Does not return anything but prints a message where variables matching the pattern can be found.

Examples

find_cars <- findvar_fun(cars)
find_cars("sp")

findvar_in_df("sp", cars)

cars <- cars; iris <- iris
findvar_anywhere("petal")

Example output

[1] "speed"
[1] "speed"
iris: Petal.Length, Petal.Width

rccmisc documentation built on May 2, 2019, 2:48 p.m.