dim: Get dimension

In ondisc: Fast, Universal, and Intuitive Computing on Large-Scale Single-Cell Data

Description

Return the dimension of an ondisc_matrix, metadata_ondisc_matrix, or multimodal_ondisc_matrix.

Usage

## S4 method for signature 'ondisc_matrix'
dim(x)

## S4 method for signature 'metadata_ondisc_matrix'
dim(x)

## S4 method for signature 'multimodal_ondisc_matrix'
dim(x)

ncol(x)

nrow(x)

## S4 method for signature 'multimodal_ondisc_matrix'
ncol(x)

## S4 method for signature 'multimodal_ondisc_matrix'
nrow(x)

Arguments

x	an ondisc_matrix, metadata_ondisc_matrix, or multimodal_ondisc_matrix.

Value

If x is an ondisc_matrix or metadata_ondisc_matrix, length-two integer vector containing the dimension of x; if x is a multimodal_ondisc_matrix, a list of integer vectors containing the dimensions of the constituent modalities of x.

Examples

# NOTE: You must create the RDS files "expressions.rds" and
# "perturbations.rds" to run this example. Navigate to the help file of
# "create_ondisc_matrix_from_mtx" (via ?create_ondisc_matrix_from_mtx),
# and execute both code blocks.

# dimension of an ondisc_matrix
h5_fp <- paste0(tempdir(), "/expressions.h5")
if (file.exists(h5_fp)) {
odm <- ondisc_matrix(h5_file = h5_fp)
dim(odm)
}

# dimension of a metadata_ondic_matrix
expressions_fp <- paste0(tempdir(), "/expressions.rds")
if (file.exists(expressions_fp)) {
expressions <- readRDS(expressions_fp)
dim(expressions)
}

# dimension of a multimodal_ondisc_matrix
expression_fp <- paste0(tempdir(), "/expressions.rds")
perturbations_fp <- paste0(tempdir(), "/perturbations.rds")
if (file.exists(expression_fp) && file.exists(perturbations_fp)) {
    crispr_experiment <- multimodal_ondisc_matrix(list(expressions = readRDS(expression_fp),
    perturbations = readRDS(perturbations_fp)))
    dim(crispr_experiment)
}

ondisc documentation built on March 5, 2021, 5:07 p.m.