is.sparse.gdsn: whether a sparse array or not

In zhengxwen/gdsfmt: R Interface to CoreArray Genomic Data Structure (GDS) Files

whether a sparse array or not

Description

Determine whether the node is a sparse array or not.

Usage

is.sparse.gdsn(node)

Arguments

node	an object of class gdsn.class (a GDS node)

Value

TRUE / FALSE.

Author(s)

Xiuwen Zheng

See Also

add.gdsn

Examples

# cteate a GDS file
f <- createfn.gds("test.gds")

cnt <- matrix(0, nrow=4, ncol=8)
set.seed(100)
cnt[sample.int(length(cnt), 8)] <- rpois(8, 4)
cnt

add.gdsn(f, "mat", val=cnt)
add.gdsn(f, "sp.mat", val=cnt, storage="sp.real")
f

is.sparse.gdsn(index.gdsn(f, "mat"))
is.sparse.gdsn(index.gdsn(f, "sp.mat"))

read.gdsn(index.gdsn(f, "sp.mat"))

# close the GDS file
closefn.gds(f)


# delete the temporary file
unlink("test.gds", force=TRUE)

zhengxwen/gdsfmt documentation built on Nov. 19, 2024, 1:03 p.m.