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Ok, I thought it might be some other algorithm :p
Anyway, thank you very much for the clarification.

Hi Daniel,

Thanks for the reply. After checking the pca fit in sand-box, I realized it's the same thing.
However, I wonder then what's the result in "Properties"?
Their is a "Box dimensions" part. So it's not a bounding box, then what is it?
Could you tell me how does it come or where should I ...

Hi,

Currently I am doing some application which needs to calculate the edge length and the volume of a bounding box of a point cloud.

However, I got two different results.
1. The box dimension shows in CloudCompare Property.

2. The results calculated with PCL in this post: http ...