Create a read-only chain of DafReaders.

Create a read-only chain of DafReaders.

Usage

chain_reader(dafs, name = NULL)

Arguments

dafs

Ordered list of DafReaders. Later entries override earlier entries on read.

name

Optional chain name; defaults to paste(names, collapse = ";").

Value

A ReadOnlyChainDaf.

Examples

base <- memory_daf(name = "base")
add_axis(base, "cell", c("c1", "c2"))
set_scalar(base, "organism", "human")
overlay <- memory_daf(name = "overlay")
set_scalar(overlay, "reference", "GRCh38")
ch <- chain_reader(list(base, overlay))
scalars_set(ch)
#> [1] "organism"  "reference"