  Software analytics in augmented reality (AR) is said to have great potential.
One reason why this potential is not yet fully exploited may be usability
problems of the AR user interfaces. We present an iterative and qualitative
usability evaluation with 15 subjects of a state-of-the-art application for
software analytics in AR. We could identify and resolve numerous usability
issues. Most of them were caused by applying conventional user interface
elements, such as dialog windows, buttons, and scrollbars. The used city
visualization, however, did not cause any usability issues. Therefore, we argue
that future work should focus on making conventional user interface elements in
AR obsolete by integrating their functionality into the immersive
visualization.
