Visual comparison is an important task in the analysis of multivariate graphs. However, comparison of topological features of a graph with respect to its data attributes for different portions of the data remains challenging because there is no single visual representation that would suit the dynamic nature of comparative analyses. To facilitate the visual comparison in node-link diagrams, we propose the comparison lens as a focus+context approach for dynamic layout adaptation. The core idea is to start with a topology-driven layout and locally inject an attribute-driven layout based on the multivariate similarity of node attributes. This facilitates comparison tasks on a local level while preserving the user's overall mental map of the graph topology. Additional visual enhancements, including color-coding, reduction of edge clutter, and radial guides, further support the comparison. To fit the lens to different comparison situations, it can be configured via user-controllable parameters. To demonstrate the utility of our approach, we use it for comparison in a real-world dataset of soccer players.
翻译:视觉比较是分析多变量图形的一项重要任务。 但是,对图表的地形特征和数据不同部分的数据属性进行比较仍然具有挑战性,因为没有适合比较分析动态性质的单一直观表示。为了便于节点链接图中的视觉比较,我们提议将对比镜作为动态版面调整的焦点加文字方法。核心思想是从地形驱动的布局开始,并在当地输入一个基于多变量节点属性相似性的属性驱动布局。这有利于在本地一级进行比较任务,同时保存用户的图形示意图的总体心理图示。额外的视觉增强,包括颜色编码、边缘缓冲和射线导线,进一步支持比较。为了使透镜适合不同的比较情况,它可以通过用户控制的参数来配置。为了展示我们方法的效用,我们用它来比较足球运动员的真实世界数据集。</s>