fix: review suggestions

Author: moe-ad

doc/source/getting_started/install.rst

@@ -23,6 +23,12 @@ To install PyDPF-Core with its optional plotting functionalities, run this comma
 
    pip install ansys-dpf-core[graphics]
 
+.. warning::
+
+   ``pip install ansys-dpf-core[plotting]`` is equivalent to the previous command, however, the "plotting" target
+   only remains valid for legacy reasons and will soon be deprecated. Users are encouraged to use the "graphics"
+   target instead.
+
 For more information about PyDPF-Core plotting capabilities, see :ref:`user_guide_plotting`.
 
 To use PyDPF-Core with Ansys 2022 R1, install the latest compatible version

pyproject.toml

@@ -49,6 +49,17 @@ graphics = [
     "imageio-ffmpeg",
 ]
 
+plotting = [
+    # 2D chart plotting
+    "matplotlib>=3.2",
+    # 3D plotting
+    "pyvista>=0.32.0",
+    "vtk!=9.4.0",
+    # Animations
+    "imageio < 2.28.1",
+    "imageio-ffmpeg",
+]
+
 [project.urls]
 Homepage = "https://dpf.docs.pyansys.com/"
 Documentation = "https://dpf.docs.pyansys.com/"