pgmslice
extracts a row or column from a PGM image and outputs the gray values
TLDR
Extract row or column slice from image
$ pgmslice -row [100] [input.pgm]
Extract column slice$ pgmslice -col [200] [input.pgm]
SYNOPSIS
pgmslice [options] [file]
DESCRIPTION
pgmslice extracts a row or column from a PGM image and outputs the gray values. Useful for analyzing image cross-sections. Part of Netpbm toolkit.
PARAMETERS
-row n
Extract horizontal slice at row n.-col n
Extract vertical slice at column n.
INSTALL
sudo apt install netpbm
sudo dnf install netpbm
sudo pacman -S netpbm
sudo apk add netpbm
sudo zypper install netpbm
brew install netpbm
nix profile install nixpkgs#netpbm