Polaris Vega cannot received coordinates

[xlzhu0317]

Hi,
thank you for your work.
I have tried to use this package for Polaris Vega. When I run the code, the NDI light turns red, which seems that NDI has been started. But it cannot read the coordinates of the ball, the transform and quality are both NaN.

Port: 2
Timestamp: 1704709059.7533686
Frame Number: 9281772.0
Transform Martix: [[nan nan nan nan]
[nan nan nan nan]
[nan nan nan nan]
[ 0. 0. 0. 1.]]
Tracking Quality: nan

The source code is as follows:
settings_vega = {
"tracker type": "vega",
"ip address": "192.168.3.100",
"port": 8765,
"romfiles" : [
"C:/Users/mi/Desktop/NDI/sroms/8700449.rom",
"C:/Users/mi/Desktop/NDI/data/something_else.rom"]
}
tracker = NDITracker(settings_vega)
tracker.start_tracking()
frame_data = tracker.get_frame()

Can you give me some advice?

[thompson318]

Hello. What are you trying to track? I see you've listed 8700449.rom. Is that the only tracked object you're trying to track, in which case you should remove something_else.rom from the list of romfiles.

[xlzhu0317]

Thanks! I removed the something_else.rom, and I can read the coordinates, thank you very much!
In addition, which interface should I use if I want to read the coordinates of a single ball.

[thompson318]

Hello, I don't think there is any way to get the coordinates of a single ball directly with our library. I'm pretty sure we can only track multi ball rigid bodies, sorry. You might be able to do something with NDI's own software but I'm not sure. Because these systems rely on the unique geometry of different rigid bodies to identify objects you'd only be able to track a single ball at a time.