Edited Text
import PhotoScan
doc = PhotoScan.app.document
chunk = doc.chunk
for camera in chunk.cameras:
if "DJI/RelativeAltitude" in camera.photo.meta.keys() and camera.reference.location:
z = float(camera.photo.meta["DJI/RelativeAltitude"])
camera.reference.location = (camera.reference.location.x, camera.reference.location.y, z)
print("Script finished")