Title: An Interactive Tool to Explore and Improve the Ply Number of Drawings,
Abstract: Given a straight-line drawing $\Gamma$ of a graph $G=(V,E)$, for every vertex
$v$ the ply disk $D_v$ is defined as a disk centered at $v$ where the radius of
the disk is half the length of the longest edge incident to $v$. The ply number
of a given drawing is defined as the maximum number of overlapping disks at
some point in $\mathbb{R}^2$. Here we present a tool to explore and evaluate
the ply number for graphs with instant visual feedback for the user. We
evaluate our methods in comparison to an existing ply computation by De Luca et
al. [WALCOM'17]. We are able to reduce the computation time from seconds to
milliseconds for given drawings and thereby contribute to further research on
the ply topic by providing an efficient tool to examine graphs extensively by
user interaction as well as some automatic features to reduce the ply number.