update vis script

vis_hit_sample.py

@@ -1,6 +1,7 @@
 from datasets import load_dataset
 import open3d as o3d
 import numpy as np
+import random
 
 def vis_hit_sample(sample):
     # get point-cloud from sample
@@ -60,5 +61,10 @@ if __name__ == '__main__':
     #female_val = load_dataset("varora/hit", "female", split="validation")
     #female_test = load_dataset("varora/hit", "female", split="test")
 
-    hit_sample = male_train[0]
+    N_dataset = male_train.__len__()
+    # get a random sample
+    idx = random.randint(0, N_dataset)
+    hit_sample = male_train[idx]
+    # visualize the sample
+    print(f"Visualizing {idx}...")
     vis_hit_sample(hit_sample)