  Brushing and linking is widely used for visual analytics in desktop
environments. However, using this approach to link many data items between
situated (e.g., a virtual screen with data) and embedded views (e.g.,
highlighted objects in the physical environment) is largely unexplored. To this
end, we study the effectiveness of visual highlighting techniques in helping
users identify and link physical referents to brushed data marks in a situated
scatterplot. In an exploratory virtual reality user study (N=20), we evaluated
four highlighting techniques under different physical layouts and tasks. We
discuss the effectiveness of these techniques, as well as implications for the
design of brushing and linking operations in situated analytics.
