[BACKPORT] Improve docstrings for most commonly used classes and configs

docs/conf.py

@@ -163,7 +163,7 @@ def setup(app: 'Sphinx') -> None:
 
             os.environ['GDAL_DATA'] = check_output('pip show rasterio | grep Location | awk \'{print $NF"/rasterio/gdal_data/"}\'', shell=True).decode().strip()
             os.environ['AWS_NO_SIGN_REQUEST'] = 'YES'
-        
+
         See this `Colab notebook <https://colab.research.google.com/drive/1qUl_6McbLJr9KjrhHnx_SWbSYkLPL2uW>`__ for an example.
 
 """ # noqa

docs/framework/pipelines.rst

@@ -131,7 +131,7 @@ The following table shows the corresponding ``Configs`` for various commonly use
         - :class:`~data.raster_source.multi_raster_source_config.MultiRasterSourceConfig`
         - :class:`~data.raster_source.rasterized_source_config.RasterizedSourceConfig`
 
-     -  
+     -
    * -  :class:`~data.raster_transformer.raster_transformer.RasterTransformer`
 
         - :class:`~data.raster_transformer.cast_transformer.CastTransformer`
@@ -150,7 +150,7 @@ The following table shows the corresponding ``Configs`` for various commonly use
         - :class:`~data.raster_transformer.rgb_class_transformer_config.RGBClassTransformerConfig`
         - :class:`~data.raster_transformer.stats_transformer_config.StatsTransformerConfig`
 
-     -  
+     -
    * -  :class:`~data.vector_source.vector_source.VectorSource`
 
         - :class:`~data.vector_source.geojson_vector_source.GeoJSONVectorSource`
@@ -159,7 +159,7 @@ The following table shows the corresponding ``Configs`` for various commonly use
 
         - :class:`~data.vector_source.geojson_vector_source_config.GeoJSONVectorSourceConfig`
 
-     -  
+     -
    * -  :class:`~data.vector_transformer.vector_transformer.VectorTransformer`
 
         - :class:`~data.vector_transformer.buffer_transformer.BufferTransformer`
@@ -172,7 +172,7 @@ The following table shows the corresponding ``Configs`` for various commonly use
         - :class:`~data.vector_transformer.class_inference_transformer_config.ClassInferenceTransformerConfig`
         - :class:`~data.vector_transformer.shift_transformer_config.ShiftTransformerConfig`
 
-     -  
+     -
    * -  :class:`~data.label_source.label_source.LabelSource`
 
         - :class:`~data.label_source.chip_classification_label_source.ChipClassificationLabelSource`
@@ -185,7 +185,7 @@ The following table shows the corresponding ``Configs`` for various commonly use
         - :class:`~data.label_source.semantic_segmentation_label_source_config.SemanticSegmentationLabelSourceConfig`
         - :class:`~data.label_source.object_detection_label_source_config.ObjectDetectionLabelSourceConfig`
 
-     -  
+     -
    * -  :class:`~data.label_store.label_store.LabelStore`
 
         - :class:`~data.label_store.chip_classification_geojson_store.ChipClassificationGeoJSONStore`

docs/framework/quickstart.rst

@@ -38,17 +38,17 @@ The Data
 .. raw:: html
 
     <div style="position: relative; padding-bottom: 56.25%; overflow: hidden; max-width: 100%;">
-        <iframe 
-            src="../_static/tiny-spacenet-map.html" 
-            frameborder="0" 
+        <iframe
+            src="../_static/tiny-spacenet-map.html"
+            frameborder="0"
             allowfullscreen style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;">
         </iframe>
     </div>
 
 Configuring a semantic segmentation pipeline
 ----------------------------------------------
 
-Create a Python file in the ``${RV_QUICKSTART_CODE_DIR}`` named ``tiny_spacenet.py``. Inside, you're going to write a function called ``get_config`` that returns a ``SemanticSegmentationConfig`` object. This object's type is a subclass of ``PipelineConfig``, and configures a semantic segmentation pipeline which (optionally) analyzes the imagery, (optionally) creates training chips, trains a model, makes predictions on validation scenes, evaluates the predictions, and saves a model bundle.
+Create a Python file in the ``${RV_QUICKSTART_CODE_DIR}`` named ``tiny_spacenet.py``. Inside, you're going to write a function called ``get_config`` that returns a :class:`~rastervision.core.rv_pipeline.semantic_segmentation_config.SemanticSegmentationConfig` object. This object's type is a subclass of :class:`~rastervision.pipeline.pipeline_config.PipelineConfig`, and configures a semantic segmentation pipeline which (optionally) analyzes the imagery, (optionally) creates training chips, trains a model, makes predictions on validation scenes, evaluates the predictions, and saves a model bundle.
 
 .. literalinclude:: /../rastervision_pytorch_backend/rastervision/pytorch_backend/examples/tiny_spacenet.py
     :language: python

rastervision_core/rastervision/core/analyzer/analyzer_config.py

@@ -8,6 +8,8 @@
 
 @register_config('analyzer')
 class AnalyzerConfig(Config):
+    """Configure an :class:`.Analyzer`."""
+
     def build(self, scene_group: Optional[Tuple[str, Iterable[str]]] = None
               ) -> 'Analyzer':
         pass

rastervision_core/rastervision/core/analyzer/stats_analyzer.py

@@ -6,7 +6,7 @@
 
 
 class StatsAnalyzer(Analyzer):
-    """Computes RasterStats against the entire scene set."""
+    """Compute imagery statistics of scenes."""
 
     def __init__(self,
                  stats_uri: Optional[str] = None,

rastervision_core/rastervision/core/analyzer/stats_analyzer_config.py

@@ -10,7 +10,11 @@
 
 @register_config('stats_analyzer')
 class StatsAnalyzerConfig(AnalyzerConfig):
-    """Config for an Analyzer that computes imagery statistics of scenes."""
+    """Configure a :class:`.StatsAnalyzer`.
+
+    A :class:`.StatsAnalyzer` computes imagery statistics of scenes which can
+    be used to normalize chips read from them.
+    """
 
     output_uri: Optional[str] = Field(
         None,

rastervision_core/rastervision/core/backend/backend_config.py

@@ -9,7 +9,7 @@
 
 @register_config('backend')
 class BackendConfig(Config):
-    """Configuration for Backend."""
+    """Configure a :class:`.Backend`."""
 
     def build(self, pipeline: 'RVPipeline', tmp_dir: str) -> 'Backend':
         raise NotImplementedError()

rastervision_core/rastervision/core/box.py

@@ -19,7 +19,7 @@ class BoxSizeError(ValueError):
 
 
 class Box():
-    """A multi-purpose box (ie. rectangle)."""
+    """A multi-purpose box (ie. rectangle) representation ."""
 
     def __init__(self, ymin, xmin, ymax, xmax):
         """Construct a bounding box.

rastervision_core/rastervision/core/data/class_config.py

@@ -10,7 +10,8 @@
 
 @register_config('class_config')
 class ClassConfig(Config):
-    """Configures the class names that are being predicted."""
+    """Configure class information for a machine learning task."""
+
     names: List[str] = Field(
         ...,
         description='Names of classes. The i-th class in this list will have '

rastervision_core/rastervision/core/data/crs_transformer/crs_transformer.py

@@ -14,7 +14,7 @@
 class CRSTransformer(ABC):
     """Transforms map points in some CRS into pixel coordinates.
 
-    Each transformer is associated with a particular RasterSource.
+    Each transformer is associated with a particular :class:`.RasterSource`.
     """
 
     def __init__(self,

rastervision_core/rastervision/core/data/dataset_config.py

@@ -19,7 +19,7 @@ def dataset_config_upgrader(cfg_dict: dict, version: int) -> dict:
 
 @register_config('dataset', upgrader=dataset_config_upgrader)
 class DatasetConfig(Config):
-    """Config for a Dataset comprising the scenes for train, valid, and test splits."""
+    """Configure train, validation, and test splits for a dataset."""
     class_config: ClassConfig
     train_scenes: List[SceneConfig]
     validation_scenes: List[SceneConfig]

rastervision_core/rastervision/core/data/label_source/chip_classification_label_source_config.py

@@ -20,10 +20,10 @@ def cc_label_source_config_upgrader(cfg_dict: dict, version: int) -> dict:
     'chip_classification_label_source',
     upgrader=cc_label_source_config_upgrader)
 class ChipClassificationLabelSourceConfig(LabelSourceConfig):
-    """Config for a source of labels for chip classification.
+    """Configure a :class:`.ChipClassificationLabelSource`.
 
-    This can be provided explicitly as a grid of cells, or a grid of cells can be
-    inferred from arbitrary polygons.
+    This can be provided explicitly as a grid of cells, or a grid of cells can
+    be inferred from arbitrary polygons.
     """
     vector_source: Optional[VectorSourceConfig] = None
     ioa_thresh: float = Field(

rastervision_core/rastervision/core/data/label_source/label_source_config.py

@@ -3,6 +3,8 @@
 
 @register_config('label_source')
 class LabelSourceConfig(Config):
+    """Configure a :class:`.LabelSource`."""
+
     def build(self, class_config, crs_transformer, extent, tmp_dir):
         raise NotImplementedError()
 

rastervision_core/rastervision/core/data/label_source/object_detection_label_source_config.py

@@ -8,7 +8,8 @@
 
 @register_config('object_detection_label_source')
 class ObjectDetectionLabelSourceConfig(LabelSourceConfig):
-    """Config for a read-only label source for object detection."""
+    """Configure an :class:`.ObjectDetectionLabelSource`."""
+
     vector_source: VectorSourceConfig
 
     @validator('vector_source')

rastervision_core/rastervision/core/data/label_source/semantic_segmentation_label_source_config.py

@@ -21,7 +21,8 @@ def ss_label_source_config_upgrader(cfg_dict: dict, version: int) -> dict:
     'semantic_segmentation_label_source',
     upgrader=ss_label_source_config_upgrader)
 class SemanticSegmentationLabelSourceConfig(LabelSourceConfig):
-    """Config for a read-only label source for semantic segmentation."""
+    """Configure a :class:`.SemanticSegmentationLabelSource`."""
+
     raster_source: Union[RasterSourceConfig, RasterizedSourceConfig] = Field(
         ..., description='The labels in the form of rasters.')
 

rastervision_core/rastervision/core/data/label_store/chip_classification_geojson_store_config.py

@@ -8,7 +8,7 @@
 
 @register_config('chip_classification_geojson_store')
 class ChipClassificationGeoJSONStoreConfig(LabelStoreConfig):
-    """Config for storage for chip classification predictions."""
+    """Configure a :class:`.ChipClassificationGeoJSONStore`."""
 
     uri: Optional[str] = Field(
         None,

rastervision_core/rastervision/core/data/label_store/label_store.py

@@ -2,8 +2,7 @@
 
 
 class LabelStore(ABC):
-    """This defines how to store prediction labels are stored for a scene.
-    """
+    """This defines how to store prediction labels for a scene."""
 
     @abstractmethod
     def save(self, labels):

rastervision_core/rastervision/core/data/label_store/label_store_config.py

@@ -3,6 +3,8 @@
 
 @register_config('label_store')
 class LabelStoreConfig(Config):
+    """Configure a :class:`.LabelStore`."""
+
     def build(self, class_config, crs_transformer, extent, tmp_dir):
         pass
 

rastervision_core/rastervision/core/data/label_store/object_detection_geojson_store_config.py

@@ -8,7 +8,7 @@
 
 @register_config('object_detection_geojson_store')
 class ObjectDetectionGeoJSONStoreConfig(LabelStoreConfig):
-    """Config for storage for object detection predictions."""
+    """Configure an :class:`.ObjectDetectionGeoJSONStore`."""
 
     uri: Optional[str] = Field(
         None,

rastervision_core/rastervision/core/data/label_store/semantic_segmentation_label_store.py

@@ -28,8 +28,8 @@
 class SemanticSegmentationLabelStore(LabelStore):
     """Storage for semantic segmentation predictions.
 
-    Stores class raster as GeoTIFF, and can optionally vectorizes predictions and stores
-    them in GeoJSON files.
+    Can store predicted class ID raster and class scores raster as GeoTIFFs,
+    and can optionally vectorize predictions and store them as GeoJSON files.
     """
 
     def __init__(

rastervision_core/rastervision/core/data/label_store/semantic_segmentation_label_store_config.py

@@ -91,7 +91,7 @@ def get_mode(self) -> str:
 
 @register_config('semantic_segmentation_label_store')
 class SemanticSegmentationLabelStoreConfig(LabelStoreConfig):
-    """Config for storage for semantic segmentation predictions.
+    """Configure a :class:`.SemanticSegmentationLabelStore`.
 
     Stores class raster as GeoTIFF, and can optionally vectorizes predictions and stores
     them in GeoJSON files.

rastervision_core/rastervision/core/data/raster_source/multi_raster_source.py

@@ -10,14 +10,8 @@
 from rastervision.core.data.utils import all_equal
 
 
-class MultiRasterSourceError(Exception):
-    pass
-
-
 class MultiRasterSource(RasterSource):
-    """A RasterSource that combines multiple RasterSources by concatenting
-    their output along the channel dimension (assumed to be the last dimension).
-    """
+    """Merge multiple ``RasterSources`` by concatenating along channel dim."""
 
     def __init__(self,
                  raster_sources: Sequence[RasterSource],
@@ -70,9 +64,18 @@ def __init__(self,
         self.validate_raster_sources()
 
     def validate_raster_sources(self) -> None:
+        """Validate sub-``RasterSources``.
+
+        Checks if:
+
+        - dtypes are same or ``force_same_dtype`` is True.
+        - each sub-``RasterSource`` is a :class:`.RasterioSource` if extents
+          not identical.
+
+        """
         dtypes = [rs.dtype for rs in self.raster_sources]
         if not self.force_same_dtype and not all_equal(dtypes):
-            raise MultiRasterSourceError(
+            raise ValueError(
                 'dtypes of all sub raster sources must be the same. '
                 f'Got: {dtypes} '
                 '(Use force_same_dtype to cast all to the dtype of the '
@@ -81,18 +84,13 @@ def validate_raster_sources(self) -> None:
             all_rasterio_sources = all(
                 isinstance(rs, RasterioSource) for rs in self.raster_sources)
             if not all_rasterio_sources:
-                raise MultiRasterSourceError(
-                    'Non-identical extents are only supported '
-                    'for RasterioSource raster sources.')
-
-        sub_num_channels = sum(rs.num_channels for rs in self.raster_sources)
-        if sub_num_channels != self.num_channels:
-            raise MultiRasterSourceError(
-                f'num_channels ({self.num_channels}) != sum of num_channels '
-                f'of sub raster sources ({sub_num_channels})')
+                raise NotImplementedError(
+                    'Non-identical extents are only '
+                    'supported for RasterioSource raster sources.')
 
     @property
     def primary_source(self) -> RasterSource:
+        """Primary sub-``RasterSource``"""
         return self.raster_sources[self.primary_source_idx]
 
     @property

rastervision_core/rastervision/core/data/raster_source/multi_raster_source_config.py

@@ -18,6 +18,8 @@ def multi_rs_config_upgrader(cfg_dict: dict, version: int) -> dict:
 
 @register_config('multi_raster_source', upgrader=multi_rs_config_upgrader)
 class MultiRasterSourceConfig(RasterSourceConfig):
+    """Configure a :class:`.MultiRasterSource`."""
+
     raster_sources: conlist(
         RasterSourceConfig, min_items=1) = Field(
             ..., description='List of RasterSourceConfig to combine.')