msi.dataset-class {SPUTNIK}

msi.dataset-class S4 class definition containing the information about the mass spectrometry imaging dataset.

Description

msi.dataset-class S4 class definition containing the information about the mass spectrometry imaging dataset.

Slots

matrix

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

mz

vector of matched m/z values.

nrow

geometrical shape (number of rows) of image.

ncol

geometrical shape (number of columns) of image.

norm

normalization method.

normoffset

numeric offset used for the normalization.

vartr

variance stabilizing transformation.

vartroffset

numeric offset used for the variance stabilizing transformation.

numdetected

msImage of number of detected peaks.

totalioncount

msImage of total-ion-count per pixel.

Author(s)

Paolo Inglese [e-mail]