Units of some (hand) data

[oliveirafhm]

Hi everyone,

What are the units used in:

iHandData.QueryMassCenterWorld(); // ??

PXCMHandData.JointData jointData;
iHandData.QueryTrackedJoint(PXCMHandData.JointType.JOINT_CENTER, out jointData);

jointData.positionWorld; // ??
jointData.speed; // ??

Just one more question.

As I know (looking and comparing both data) the values obtained from these two functions below 

PXCMPoint3DF32 massCenter = iHandData.QueryMassCenterWorld(); // This one

PXCMHandData.JointData jointData;
iHandData.QueryTrackedJoint(PXCMHandData.JointType.JOINT_CENTER, out jointData);
PXCMPoint3DF32 positionWorldJoint = jointData.positionWorld; // And this also

are different.  

My question is, what's the difference between these functions? and  how each one calculates these values?

Thanks in advance!

[Xusheng_L_Intel]

You can find detail info @https://software.intel.com/sites/landingpage/realsense/camera-sdk/2014gold/documentation/html/index.html?jointdata_pxchanddata.html. Please let me know if you still have any question. Thanks!

[oliveirafhm]

Ok, thanks David.

Just to be clear, I presume that QueryMassCenterWorld also is in meters, and jointSpeed in m/s? 

Right?