Basic README instructions

README.md

@@ -1,3 +1,40 @@
 ---
 license: apache-2.0
 ---
+
+# Wadhwani AI Pest Management Open Data
+
+This dataset is a Hugging Face adaptor to the official dataset [hosted
+on
+Github](https://github.com/WadhwaniAI/pest-management-opendata). Please
+refer to that repository for detailed and up-to-date documentation.
+
+## Usage
+
+This dataset is large. It is strongly recommended users access it as a
+stream:
+
+```python
+from datasets import load_dataset
+dataset = load_dataset('jerome-ai/pest-management-opendata', streaming=True)
+```
+
+Bound boxes are stored as geospatial types. Once loaded, they can be
+read as follows:
+
+```python
+from shapely.wkb import loads
+
+for (s, data) in dataset.items():
+    for d in data:
+        pests = d['pests']
+        iterable = map(pests.get, ('label', 'geometry'))
+        for (i, j) in zip(*iterable):
+            geom = loads(j)
+            print(i, geom.bounds)
+```
+
+The bounds of a geometry are what most object detection systems
+require. See the [Shapely
+documentation](https://shapely.readthedocs.io/en/stable/manual.html#object.bounds)
+for more.