SPUTNIK (version 1.4.2)

getIntensityMat,msi.dataset-method: Return the peaks intensity matrix.

Description

Return the peaks intensity matrix.

Usage

# S4 method for msi.dataset
getIntensityMat(object)

Value

peaks intensity matrix. Rows represent pixels, and columns represent peaks.

Arguments

object

msi.dataset-class object.

Examples

## Load package
library("SPUTNIK")

## Create the msi.dataset-class object
sz <- c(5, 4)
x <- matrix(rnorm(sz[1] * sz[2] * 20), sz[1] * sz[2], 20)
x[x < 0] <- 0
mz <- sort(sample(100, ncol(x)))
msiX <- msiDataset(x, mz, sz[1], sz[2])

## Get m/z vector
mz <- getMZ(msiX)

## Get intensity matrix
X <- getIntensityMat(msiX)

## Get image size
sz <- getShapeMSI(msiX)