  Composite visualization represents a widely embraced design that combines
multiple visual representations to create an integrated view. However, the
traditional approach of creating composite visualizations in immersive
environments typically occurs asynchronously outside of the immersive space and
is carried out by experienced experts. In this work, we aim to empower users to
participate in the creation of composite visualization within immersive
environments through embodied interactions. This could provide a flexible and
fluid experience with immersive visualization and has the potential to
facilitate understanding of the relationship between visualization views. We
begin with developing a design space of embodied interactions to create various
types of composite visualizations with the consideration of data relationships.
Drawing inspiration from people's natural experience of manipulating physical
objects, we design interactions based on the combination of 3D manipulations in
immersive environments. Building upon the design space, we present a series of
case studies showcasing the interaction to create different kinds of composite
visualizations in virtual reality. Subsequently, we conduct a user study to
evaluate the usability of the derived interaction techniques and user
experience of creating composite visualizations through embodied interactions.
We find that empowering users to participate in composite visualizations
through embodied interactions enables them to flexibly leverage different
visualization views for understanding and communicating the relationships
between different views, which underscores the potential of several future
application scenarios.
