Improvements to gallery (#7883)

docs/source/conf.py

@@ -76,14 +76,44 @@
 """
 
 
+class CustomGalleryExampleSortKey:
+    # See https://sphinx-gallery.github.io/stable/configuration.html#sorting-gallery-examples
+    # and https://github.com/sphinx-gallery/sphinx-gallery/blob/master/sphinx_gallery/sorting.py
+    def __init__(self, src_dir):
+        self.src_dir = src_dir
+
+    transforms_subsection_order = [
+        "plot_transforms_getting_started.py",
+        "plot_transforms_e2e.py",
+        "plot_cutmix_mixup.py",
+        "plot_custom_transforms.py",
+        "plot_datapoints.py",
+        "plot_custom_datapoints.py",
+    ]
+
+    def __call__(self, filename):
+        if "gallery/transforms" in self.src_dir:
+            try:
+                return self.transforms_subsection_order.index(filename)
+            except ValueError as e:
+                raise ValueError(
+                    "Looks like you added an example in gallery/transforms? "
+                    "You need to specify its order in docs/source/conf.py. Look for CustomGalleryExampleSortKey."
+                ) from e
+        else:
+            # For other subsections we just sort alphabetically by filename
+            return filename
+
+
 sphinx_gallery_conf = {
     "examples_dirs": "../../gallery/",  # path to your example scripts
     "gallery_dirs": "auto_examples",  # path to where to save gallery generated output
-    "subsection_order": ExplicitOrder(["../../gallery/v2_transforms", "../../gallery/others"]),
+    "subsection_order": ExplicitOrder(["../../gallery/transforms", "../../gallery/others"]),
     "backreferences_dir": "gen_modules/backreferences",
     "doc_module": ("torchvision",),
     "remove_config_comments": True,
     "ignore_pattern": "helpers.py",
+    "within_subsection_order": CustomGalleryExampleSortKey,
 }
 
 napoleon_use_ivar = True

docs/source/datapoints.rst

@@ -8,7 +8,7 @@ Datapoints
 Datapoints are tensor subclasses which the :mod:`~torchvision.transforms.v2` v2 transforms use under the hood to
 dispatch their inputs to the appropriate lower-level kernels. Most users do not
 need to manipulate datapoints directly and can simply rely on dataset wrapping -
-see e.g. :ref:`sphx_glr_auto_examples_v2_transforms_plot_transforms_v2_e2e.py`.
+see e.g. :ref:`sphx_glr_auto_examples_transforms_plot_transforms_e2e.py`.
 
 .. autosummary::
     :toctree: generated/

docs/source/transforms.rst

@@ -113,7 +113,7 @@ do to is to update the import to ``torchvision.transforms.v2``. In terms of
 output, there might be negligible differences due to implementation differences.
 
 To learn more about the v2 transforms, check out
-:ref:`sphx_glr_auto_examples_v2_transforms_plot_transforms_v2.py`.
+:ref:`sphx_glr_auto_examples_transforms_plot_transforms_getting_started.py`.
 
 .. TODO: make sure link is still good!!
 
@@ -479,7 +479,7 @@ CutMix and MixUp are special transforms that
 are meant to be used on batches rather than on individual images, because they
 are combining pairs of images together. These can be used after the dataloader
 (once the samples are batched), or part of a collation function. See
-:ref:`sphx_glr_auto_examples_v2_transforms_plot_cutmix_mixup.py` for detailed usage examples.
+:ref:`sphx_glr_auto_examples_transforms_plot_cutmix_mixup.py` for detailed usage examples.
 
 .. autosummary::
     :toctree: generated/

gallery/transforms/README.rst

@@ -0,0 +1,4 @@
+.. _transforms_gallery:
+
+Transforms
+----------

gallery/v2_transforms/plot_custom_datapoints.py → gallery/transforms/plot_custom_datapoints.py

@@ -5,12 +5,12 @@
 
 .. note::
     Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_custom_datapoints.ipynb>`_
-    or :ref:`go to the end <sphx_glr_download_auto_examples_v2_transforms_plot_custom_datapoints.py>` to download the full example code.
+    or :ref:`go to the end <sphx_glr_download_auto_examples_transforms_plot_custom_datapoints.py>` to download the full example code.
 
 This guide is intended for advanced users and downstream library maintainers. We explain how to
 write your own datapoint class, and how to make it compatible with the built-in
 Torchvision v2 transforms. Before continuing, make sure you have read
-:ref:`sphx_glr_auto_examples_v2_transforms_plot_datapoints.py`.
+:ref:`sphx_glr_auto_examples_transforms_plot_datapoints.py`.
 """
 
 # %%

gallery/v2_transforms/plot_custom_transforms.py → gallery/transforms/plot_custom_transforms.py

@@ -5,7 +5,7 @@
 
 .. note::
     Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_custom_transforms.ipynb>`_
-    or :ref:`go to the end <sphx_glr_download_auto_examples_v2_transforms_plot_custom_transforms.py>` to download the full example code.
+    or :ref:`go to the end <sphx_glr_download_auto_examples_transforms_plot_custom_transforms.py>` to download the full example code.
 
 This guide explains how to write transforms that are compatible with the
 torchvision transforms V2 API.

gallery/v2_transforms/plot_cutmix_mixup.py → gallery/transforms/plot_cutmix_mixup.py

@@ -6,7 +6,7 @@
 
 .. note::
     Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_cutmix_mixup.ipynb>`_
-    or :ref:`go to the end <sphx_glr_download_auto_examples_v2_transforms_plot_cutmix_mixup.py>` to download the full example code.
+    or :ref:`go to the end <sphx_glr_download_auto_examples_transforms_plot_cutmix_mixup.py>` to download the full example code.
 
 :class:`~torchvision.transforms.v2.CutMix` and
 :class:`~torchvision.transforms.v2.MixUp` are popular augmentation strategies

gallery/v2_transforms/plot_datapoints.py → gallery/transforms/plot_datapoints.py

@@ -5,7 +5,7 @@
 
 .. note::
     Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_datapoints.ipynb>`_
-    or :ref:`go to the end <sphx_glr_download_auto_examples_v2_transforms_plot_datapoints.py>` to download the full example code.
+    or :ref:`go to the end <sphx_glr_download_auto_examples_transforms_plot_datapoints.py>` to download the full example code.
 
 
 Datapoints are Tensor subclasses introduced together with

gallery/v2_transforms/plot_transforms_v2_e2e.py → gallery/transforms/plot_transforms_e2e.py

@@ -4,8 +4,8 @@
 ===============================================================
 
 .. note::
-    Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_transforms_v2_e2e.ipynb>`_
-    or :ref:`go to the end <sphx_glr_download_auto_examples_v2_transforms_plot_transforms_v2_e2e.py>` to download the full example code.
+    Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_transforms_e2e.ipynb>`_
+    or :ref:`go to the end <sphx_glr_download_auto_examples_transforms_plot_transforms_e2e.py>` to download the full example code.
 
 Object detection and segmentation tasks are natively supported:
 ``torchvision.transforms.v2`` enables jointly transforming images, videos,

gallery/v2_transforms/plot_transforms_v2.py → gallery/transforms/plot_transforms_getting_started.py

@@ -4,8 +4,8 @@
 ==================================
 
 .. note::
-    Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_transforms_v2.ipynb>`_
-    or :ref:`go to the end <sphx_glr_download_auto_examples_v2_transforms_plot_transforms_v2.py>` to download the full example code.
+    Try on `collab <https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/main/_generated_ipynb_notebooks/plot_transforms_getting_started.ipynb>`_
+    or :ref:`go to the end <sphx_glr_download_auto_examples_transforms_plot_transforms_getting_started.py>` to download the full example code.
 
 This example illustrates all of what you need to know to get started with the
 new :mod:`torchvision.transforms.v2` API. We'll cover simple tasks like
@@ -70,7 +70,7 @@
 # <transforms>` to learn more about recommended practices and conventions, or
 # explore more :ref:`examples <transforms_gallery>` e.g. how to use augmentation
 # transforms like :ref:`CutMix and MixUp
-# <sphx_glr_auto_examples_v2_transforms_plot_cutmix_mixup.py>`.
+# <sphx_glr_auto_examples_transforms_plot_cutmix_mixup.py>`.
 #
 # .. note::
 #
@@ -148,7 +148,7 @@
 #
 # You don't need to know much more about datapoints at this point, but advanced
 # users who want to learn more can refer to
-# :ref:`sphx_glr_auto_examples_v2_transforms_plot_datapoints.py`.
+# :ref:`sphx_glr_auto_examples_transforms_plot_datapoints.py`.
 #
 # What do I pass as input?
 # ------------------------
@@ -243,7 +243,7 @@
 #
 #    from torchvision.datasets import CocoDetection, wrap_dataset_for_transforms_v2
 #
-#    dataset = CocoDetection(..., transforms=my_v2_transforms)
+#    dataset = CocoDetection(..., transforms=my_transforms)
 #    dataset = wrap_dataset_for_transforms_v2(dataset)
 #    # Now the dataset returns datapoints!
 #

torchvision/datapoints/_datapoint.py

@@ -17,7 +17,7 @@ class Datapoint(torch.Tensor):
 
     You probably don't want to use this class unless you're defining your own
     custom Datapoints. See
-    :ref:`sphx_glr_auto_examples_v2_transforms_plot_custom_datapoints.py` for details.
+    :ref:`sphx_glr_auto_examples_transforms_plot_custom_datapoints.py` for details.
     """
 
     @staticmethod

torchvision/transforms/v2/_augment.py

@@ -216,7 +216,7 @@ class MixUp(_BaseMixUpCutMix):
     .. note::
         This transform is meant to be used on **batches** of samples, not
         individual images. See
-        :ref:`sphx_glr_auto_examples_v2_transforms_plot_cutmix_mixup.py` for detailed usage
+        :ref:`sphx_glr_auto_examples_transforms_plot_cutmix_mixup.py` for detailed usage
         examples.
         The sample pairing is deterministic and done by matching consecutive
         samples in the batch, so the batch needs to be shuffled (this is an
@@ -266,7 +266,7 @@ class CutMix(_BaseMixUpCutMix):
     .. note::
         This transform is meant to be used on **batches** of samples, not
         individual images. See
-        :ref:`sphx_glr_auto_examples_v2_transforms_plot_cutmix_mixup.py` for detailed usage
+        :ref:`sphx_glr_auto_examples_transforms_plot_cutmix_mixup.py` for detailed usage
         examples.
         The sample pairing is deterministic and done by matching consecutive
         samples in the batch, so the batch needs to be shuffled (this is an

torchvision/transforms/v2/functional/_utils.py

@@ -69,7 +69,7 @@ def _name_to_functional(name):
 def register_kernel(functional, datapoint_cls):
     """[BETA] Decorate a kernel to register it for a functional and a (custom) datapoint type.
 
-    See :ref:`sphx_glr_auto_examples_v2_transforms_plot_custom_datapoints.py` for usage
+    See :ref:`sphx_glr_auto_examples_transforms_plot_custom_datapoints.py` for usage
     details.
     """
     if isinstance(functional, str):