Skip to contents

Subset a QPTIFFImage

Source: R/read_qptiff.R
sub-.QPTIFFImage.Rd

Standard 3-D array subscripting with all missing-subscript combinations supported. The result is always a QPTIFFImage, including when a single channel is selected. To extract a plain 2-D matrix for one channel, use unclass(img[, , "DAPI"])[, , 1L].

  • img[, , "DAPI"] - single channel (returns a 1-channel QPTIFFImage)

  • img[, , c("DAPI","CD3")] - multi-channel sub-image

  • img[1:512, 1:512, ] - spatial crop

Usage

# S3 method for class 'QPTIFFImage'
x[i, j, k, drop = FALSE]

Arguments

x

A QPTIFFImage.

i

Row indices (spatial), or missing.

j

Column indices (spatial), or missing.

k

Channel indices (numeric or character), or missing.

drop

Ignored; the result is always a 3-D QPTIFFImage.

Value

A QPTIFFImage.