tidyterra (version 0.7.2)

as_tibble.Spat: Coerce a SpatVector or SpatRaster object to data frames

Description

as_tibble() methods for SpatRaster and SpatVector objects.

Usage

# S3 method for SpatRaster
as_tibble(x, ..., xy = FALSE, na.rm = FALSE, .name_repair = "unique")
# S3 method for SpatVector
as_tibble(x, ..., geom = NULL, .name_repair = "unique")

Value

A tibble.

Arguments

x

A SpatRaster created with terra::rast() or a SpatVector created with terra::vect().

...

Arguments passed on to terra::as.data.frame().

xy

logical. If TRUE, the coordinates of each raster cell are included

na.rm

logical. If TRUE, cells that have a NA value in at least one layer are removed. If the argument is set to NA only cells that have NA values in all layers are removed

.name_repair

Treatment of problematic column names:

• "minimal": No name repair or checks, beyond basic existence.

• "unique": Make sure names are unique and not empty.

• "check_unique": (default value), no name repair, but check they are unique.

• "universal": Make the names unique and syntactic.

• a function: apply custom name repair (e.g., .name_repair = make.names for names in the style of base R).

• A purrr-style anonymous function, see rlang::as_function().

geom

character or NULL. If not NULL, either "WKT" or "HEX", to get the geometry included in Well-Known-Text or hexadecimal notation. If x has point geometry, it can also be "XY" to add the coordinates of each point

<a href="https://CRAN.R-project.org/package=terra"><span class="pkg">terra</span></a> equivalent

terra::as.data.frame()

Methods

Implementation of the generic tibble::as_tibble() function.

SpatRaster and SpatVector

The tibble is returned with an attribute including the crs of the initial object in WKT format (see pull_crs()).

About layer/column names

When coercing SpatRaster objects to data frames, x and y names are reserved for geographic coordinates of each cell of the SpatRaster It should be also noted that terra allows layers with duplicated names.

In the process of coercing a SpatRaster to a tibble, tidyterra may rename the layers of your SpatRaster for overcoming this issue. Specifically, layers may be renamed on the following cases:

• Layers with duplicated names.

• When coercing to a tibble, if xy = TRUE, layers named x or y would be renamed.

• When working with tidyverse methods (i.e. filter.SpatRaster()), the latter would happen as well.

tidyterra would display a message informing of the changes on the names of the layer.

The same issue happens for SpatVector with names geometry (when geom = c("WKT", "HEX")) and x, y (when geom = "XY"). These are reserved names representing the geometry of the SpatVector (see terra::as.data.frame()). If geom is not NULL then the logic described for SpatRaster would apply as well for the columns of the SpatVector.

See Also

tibble::as_tibble(), terra::as.data.frame()

Coercing objects: as_coordinates(), as_sf(), as_spatraster(), as_spatvector(), fortify.Spat

Examples

library(terra)
# SpatRaster
f <- system.file("extdata/cyl_temp.tif", package = "tidyterra")
r <- rast(f)

as_tibble(r, na.rm = TRUE)

as_tibble(r, xy = TRUE)

# SpatVector

f <- system.file("extdata/cyl.gpkg", package = "tidyterra")
v <- vect(f)

as_tibble(v)