Check if an axis exists in a Daf object

Determines whether an axis with the specified name exists in the Daf data set.

Usage

has_axis(daf, axis)

Arguments

daf

A Daf object

axis

Name of the axis to check

Value

TRUE if the axis exists, FALSE otherwise

Details

Axes are fundamental dimensions in a Daf data set along which vector and matrix data are stored. Each axis has a collection of unique named entries. See the Julia documentation for details.

Examples

if (FALSE) { # \dontrun{
setup_daf()
daf <- memory_daf("example")
add_axis(daf, "cell", c("A", "B", "C"))
has_axis(daf, "cell") # TRUE
has_axis(daf, "gene") # FALSE
} # }