R: transform method for sf objects

transform.sf {sf} | R Documentation

## transform method for sf objects

### Description

Can be used to create or modify attribute variables; for transforming geometries see st_transform, and all other functions starting with `st_`.

### Usage

    ## S3 method for class 'sf'
    transform(`_data`, ...)

### Arguments

`_data` | object of class `sf`
`...` | Further arguments of the form new_variable=expression

### Examples

    a = data.frame(x1 = 1:3, x2 = 5:7)
    st_geometry(a) = st_sfc(st_point(c(0,0)), st_point(c(1,1)), st_point(c(2,2)))
    transform(a, x1_sq = x1^2)
    transform(a, x1_x2 = x1*x2)

[Package sf version 1.0-7 Index]