fix: enforce Y-up in visualize_extrinsics and sync README

py_workspace/visualize_extrinsics.py

@@ -495,6 +495,7 @@ def main(
         yaxis_title="Y (m)",
         zaxis_title="Z (m)",
         aspectmode="data",  # Important for correct proportions
+        camera=dict(up=dict(x=0, y=1, z=0)),  # Enforce Y-up convention
     )
 
     if birdseye:
@@ -505,6 +506,12 @@ def main(
             # Wait, we want X-Z plane. So we look down Y.
             # Plotly default is Z up.
             # If our data is Y-up (standard graphics), then we look from +Y down to X-Z.
+            # Actually, for X-Z plane top-down, we want to look from +Y.
+            # So eye should be (0, high, 0).
+            # And "up" vector for the camera should be aligned with Z (or -Z) to orient the map correctly.
+            # Let's try Z-up for the camera orientation so X is right and Z is up on screen?
+            # No, usually map is X right, Z up (or down).
+            # If we look from +Y, and up is +Z, then Z is "up" on screen.
             eye=dict(x=0, y=2.5, z=0),
         )