Pymavlink-manual control

i am trying to automate my ROV
https://www.ardusub.com/developers/pymavlink.html
can anyone tell me what is this positive x,negative y ,negative z in manual control?

Hi,

This represents the joystick input, each axis can be represented by a negative and positive value, as the example and the code comments explains.

There is right now a problem in our documentation since mavlink changed the website domain, but this should be fixed soon. Meanwhile you can check the message documentation in: Messages (common) · MAVLink Developer Guide, this’ll explain what each axis and value range represents.