Orthographic Star Coordinates

被引：36
作者：
Lehmann, Dirk J. [1 ]
Theisel, Holger [1 ]
机构：
[1] Univ Magdeburg, Dept Simulat & Graph, D-39106 Magdeburg, Germany
来源：
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS | 2013年 / 19卷 / 12期
关键词：
Start plot; multivariate visualization; visual analytics;
D O I：
10.1109/TVCG.2013.182
中图分类号：
TP31 [计算机软件];
学科分类号：
081202 ; 0835 ;
摘要：
Star coordinates is a popular projection technique from an nD data space to a 2D/3D visualization domain. It is defined by setting n coordinate axes in the visualization domain. Since it generally defines an affine projection, strong distortions can occur: an nD sphere can be mapped to an ellipse of arbitrary size and aspect ratio. We propose to restrict star coordinates to orthographic projections which map an nD sphere of radius r to a 2D circle of radius r. We achieve this by formulating conditions for the coordinate axes to define orthographic projections, and by running a repeated non-linear optimization in the background of every modification of the coordinate axes. This way, we define a number of orthographic interaction concepts as well as orthographic data tour sequences: a scatterplot tour, a principle component tour, and a grand tour. All concepts are illustrated and evaluated with synthetic and real data.
引用
收藏
页码：2615 / 2624
页数：10
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