G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing
Banner Institutions GREYC CNRS ENSICAEN UNICAEN

A Full-Featured Open-Source Framework for Image Processing

Latest stable version: 3.6.3        Current pre-release: 3.6.4 (2025/11/05)

Reference
Table of Contents  ▸  List of Commands  ▸  Flow Control  ▸  eval◀  error    |    exec  ▶

eval

Built-in command

Arguments:

  • expression

Description:

Evaluate specified math expression.
If no image selection is specified, the expression is evaluated only once and its result is set to status.
If image selection is specified, the expression is evaluated for all pixel values of the selected images. Status is unchanged. In this setting, eval is similar to fill without assigning the image values.
G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing

G'MIC is an open-source software distributed under the CeCILL free software licenses (LGPL-like and/or
GPL-compatible). Copyrights (C) Since July 2008, David Tschumperlé - GREYC UMR CNRS 6072, Image Team.