.. meta::
    :description: Extensions LUTs Look-up tables

LUTs
====

This section explains how to create and edit Look-Up Tables (LUTs).

Usage
-----
A LUT is a color map for datasets, MultiROIs and meshes.

.. _filesLocationLUTExtension:

File location
-------------
To be recognized by the application, LUTs should be located in one of these folders:

- %LocalAppData%/ORS/Dragonfly(*version*)/pythonUserExtensions/LUTs (available for the current user)
- %ProgramData%/ORS/Dragonfly(*version*)/pythonAllUsersExtensions/LUTs (available for all users)
- Dragonfly installation folder/resource/lut (distributed with the application)

File creation
-------------
To create a LUT, start the application,
select a dataset (import one if needed), select a LUT from the 2D settings panel or the 3D settings panel,
click on the *Edit* button next to that LUT,
edit the colors as needed, then press on the *Save...* button.

File edition
------------
To modify a created LUT, select that LUT, click on the *Edit* button, do the modifications in the LUT editor,
then press on the *Save...* button.

Demos
-----

Source code example:

#. Download the :download:`file </Documentation/Demos/Demo 08 colors inverted 212b2ddea54611e7a93b448a5b5d70c0.tfi>`;
#. Put that file into a :ref:`LUT extension folder <filesLocationLUTExtension>`;
#. Start the application;
#. Import a dataset;
#. Select the LUT *Demo 08 colors inverted* in the 2D settings panel or the 3D settings panel.