add snippet to readme

README.md

@@ -1,3 +1,43 @@
 ---
 license: cc-by-4.0
 ---
+
+## Code snippet to visualise the position of the box
+
+```python
+import matplotlib.image as img
+import matplotlib.pyplot as plt
+from datasets import load_dataset
+from matplotlib.patches import Rectangle
+
+# Load dataset
+ds_name = "SaulLu/Caltech-101"
+ds_config = "without_background_category"
+
+ds_without = load_dataset(ds_name, ds_config, use_auth_token=True, cache_dir="new_cache_2")
+
+# Extract information for the sample we want to show
+index = 100
+sample = ds_without["train"][index]
+box_coord = sample["annotation"]["box_coord"][0]
+img_path = sample["image"].filename
+
+# Create plot
+# define Matplotlib figure and axis
+fig, ax = plt.subplots()
+
+# plot figure
+image = img.imread(img_path)
+ax.imshow(image)
+
+# add rectangle to plot
+ax.add_patch(
+    Rectangle((box_coord[2], box_coord[0]), box_coord[3] - box_coord[2], box_coord[1] - box_coord[0], fill=None)
+)
+
+# display plot
+plt.show()
+```
+
+Result: 
+![Sample with box position](data_readme/sample_100_box_pos.png)