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Test whether the spatial columns match the metadata

Source: R/aniframe_validate.R
is_spatial.Rd

Returns TRUE when variables_where declares at least one column and every column it names is present and numeric.

Usage

is_spatial(data)

Arguments

data

An aniframe object.

Value

Logical scalar.

Details

This is a different question from the one is_cartesian() and its siblings answer: those test for the presence of particular column names (x, y, z, …) and never consult the metadata or the column types. A frame that has lost its x column still satisfies is_cartesian_1d() on the strength of y alone, while its variables_where still promises both.

See also

ensure_is_spatial(), validate_aniframe().

Examples

af <- aniframe(time = 1:5, x = 1:5, y = 1:5)
is_spatial(af)
#> [1] TRUE

# Dropping a declared column breaks the correspondence
is_spatial(dplyr::select(af, -x))
#> [1] FALSE