Some questions about data

[nuosferatu]

Hi, thank you for sharing the nice work, I have problem understanding some of the dataset, hope you can resolve my follow questions:

1. where is the cam.pos ?
2. what is the meanings of SH, CR and NU, I guess that Sphere, Camera and .... NULL?
3. why the primitives.prim file in different TRAIN scenes contains different times ID loop of 00...22 ? and it seems that 21 and 22 are always NU.
4. what the six parameters mean?
   PL07 1.0609230995178223 0.8599799275398254 1.5035672187805176 0 0 1

Would you like to help me resolve the questions? Thank you very much.

[simbaforrest]

@duanshun can you please help answer the above question? Thank you.