Get a matrix parameter value

Reads the value of a matrix parameter for the current step. Matrix steps receive DAGGLE_MATRIX_<KEY> environment variables with the key uppercased.

Usage

get_matrix(key)

Arguments

key

Character string. The matrix parameter name (e.g., "region").

Value

Character string with the matrix value, or "" if not set.

Examples

if (FALSE) { # \dontrun{
region <- get_matrix("region")
} # }