Image dimensions at a pyramid level

Return the pixel dimensions c(width, height) of an annot_image at a given pyramid level.

Usage

at_dims(x, level = 0L, call = rlang::caller_env())

# S3 method for class 'annot_image'
dim(x)

Arguments

x

An annot_image.

level

Integer pyramid level, 0 for full resolution. Must be in 0:(at_n_levels(x) - 1).

call

The calling environment, for error reporting.

Value

An integer vector of length 2, c(width, height).

Details

dim() on an annot_image returns c(width, height, bands) at level 0. Note the order: width first, unlike the [y, x, band] arrays returned by at_tile(), so nrow() gives the width.

See also

at_n_levels(), at_is_pyramidal()

Other images: at_bands(), at_close_image(), at_example_image(), at_hsi_meta(), at_image_capabilities(), at_is_pyramidal(), at_is_spectral(), at_meta(), at_n_bands(), at_n_levels(), at_pixel_size(), at_read_image(), at_tile(), at_wavelengths(), hyperannotatR-classes

Examples

# Image handles come from at_read_image(); see the images vignette.