Apply a query to a Daf object

Executes a query on a Daf object and returns the result. Queries provide a way to extract, filter, and manipulate data from a Daf object using a composable syntax. Queries can retrieve scalars, vectors, matrices, or sets of names depending on the operations used.

Usage

get_query(daf = NULL, query = NULL, cache = TRUE)

Arguments

daf

A Daf object

query

Query string or object. Can be created using query operations such as Axis(), LookupVector(), IsGreater(), etc. In order to support the use of pipe operators, the query can also be a Daf object and vice versa, see examples below.

cache

Whether to cache the query result

Value

The result of the query, which could be a scalar, vector, matrix, or set of names depending on the query

Details

See the Julia documentation for details.

See also

has_query(), parse_query(), get_dataframe_query(), and the query operations documentation.

Examples

if (FALSE) { # \dontrun{
setup_daf()
daf <- memory_daf("example")
add_axis(daf, "cell", c("A", "B", "C"))
set_vector(daf, "cell", "score", c(1.0, 2.0, 3.0))
get_query(daf, Axis("cell") |> LookupVector("score"))
} # }