A method to form a dynamic array with a trackable member, comprising: removably fixing a robotic system in a volume; moving a trackable member with a moveable portion of the robotic system to a first position; moving the trackable member with the moveable portion of the robotic system to a second position; performing a navigation system tracking by (i) tracking the first position of the trackable member with a navigation system in a navigation coordinate system and (ii) tracking the second position of the trackable member with the navigation system in the navigation coordinate system; performing a robotic system tracking by (i) tracking the first position with a robotic tracking system in a robotic coordinate system separate from the navigation system and (ii) tracking the second position with the robotic tracking system in the robotic coordinate system; defining a virtual array with the trackable member by moving the trackable member between the first position and a second position; correlating the navigation system tracking and the robotic system tracking; registering the robotic system to a subject, wherein a fixed portion of the robotic system is fixed relative to the subject and the moveable portion is moveable relative to the subject; determining a position of the moveable portion relative to the fixed portion with the robotic tracking system, wherein correlating the navigation system tracking and the robotic system tracking further comprises: identifying the first position in the robotic coordinate system and the navigation coordinate system; identifying the second position in the robotic coordinate system and the navigation coordinate system; and creating a translation map between the robotic coordinate system and the navigation coordinate system based on the identified first position and second position in both the robotic coordinate system and the navigation coordinate system; performing a robotic coordinate system to image coordinate system registration; performing a registration of the navigation coordinate system to the image coordinate system without first performing a direct image coordinate system to navigation coordinate system registration, the registration of the navigation coordinate system to the image coordinate system being based on the robotic coordinate system to image coordinate system registration and the translation map between the robotic coordinate system and the navigation coordinate system. removably fixing a robotic system in a volume; moving a trackable member with a moveable portion of the robotic system to a first position; moving the trackable member with the moveable portion of the robotic system to a second position; performing a navigation system tracking by (i) tracking the first position of the trackable member with a navigation system in a navigation coordinate system and (ii) tracking the second position of the trackable member with the navigation system in the navigation coordinate system; performing a robotic system tracking by (i) tracking the first position with a robotic tracking system in a robotic coordinate system separate from the navigation system and (ii) tracking the second position with the robotic tracking system in the robotic coordinate system; defining a virtual array with the trackable member by moving the trackable member between the first position and a second position; correlating the navigation system tracking and the robotic system tracking; registering the robotic system to a subject, wherein a fixed portion of the robotic system is fixed relative to the subject and the moveable portion is moveable relative to the subject; determining a position of the moveable portion relative to the fixed portion with the robotic tracking system, wherein correlating the navigation system tracking and the robotic system tracking further comprises: identifying the first position in the robotic coordinate system and the navigation coordinate system; identifying the second position in the robotic coordinate system and the navigation coordinate system; and identifying the first position in the robotic coordinate system and the navigation coordinate system; identifying the second position in the robotic coordinate system and the navigation coordinate system; and creating a translation map between the robotic coordinate system and the navigation coordinate system based on the identified first position and second position in both the robotic coordinate system and the navigation coordinate system; performing a robotic coordinate system to image coordinate system registration; performing a registration of the navigation coordinate system to the image coordinate system without first performing a direct image coordinate system to navigation coordinate system registration, the registration of the navigation coordinate system to the image coordinate system being based on the robotic coordinate system to image coordinate system registration and the translation map between the robotic coordinate system and the navigation coordinate system.