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Interactive visual method and device facing layering data

A hierarchical and data-based technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems that cannot be proved theoretically, the hierarchical data structure is not very clear, and the display occupies space, etc. , to achieve the effects of easy understanding and implementation, optimal space utilization, and consistent aspect ratio

Inactive Publication Date: 2014-04-16
SHANDONG UNIV
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Problems solved by technology

At the same time, this method also has the following three disadvantages: First, it is easy to generate narrow and long rectangles, resulting in different aspect ratios of the divided areas, which affects interactive operations; second, this method can only divide rectangular areas and is not suitable for arbitrary shape areas. The scope of application is limited; third, because the display of leaf nodes takes up most of the space, the method is not very clear about the hierarchical structure of hierarchical data
They adopt a heuristic circle layout method, which has the advantages of being efficient, easy to understand and implement, but the disadvantage is that it lacks theoretical significance, cannot prove its rationality theoretically, and this method is not suitable for dynamic data or local update of data. Sensitive, not easy to interact with

Method used

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  • Interactive visual method and device facing layering data
  • Interactive visual method and device facing layering data

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0058] Such as figure 1 An example of hierarchical data in a file system is given to illustrate the design and application process of the node weight mapping function. File system hierarchical data has many attributes, such as name, size, file type, modification date, etc. Users may pay attention to any one of these attributes or their combined features. Assuming that the attribute that the current user cares about is the file size, choose the file size as the design criterion for the weight mapping function, and directly assign the file size to the leaf nodes of the hierarchical data. The size data value is used as the weight of the node, and the sum of the weights of its child nodes is used as the weight of the node for non-leaf nodes. image 3 It is an interface diagram of an interactive visualization method and device according to an embodiment of...

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Abstract

The invention discloses an interactive visual method and a device facing layering data. The method comprises the flowing special steps: step1, a layering data object is acquired, and a suitable weight mapping function is set according to characteristics of the layering data, characteristics of application scenarios and special requirements of a user; step2, the weight of each node of the layering data is defined through the mapping function; step3, a root node of the layering data is expressed by selecting round space or arbitrary polygonal space; step 4, other nodes are expressed to be circles with specific radiuses according to the weight of each node of the layering data; step5, the arrangement of layering circles is produced due to the adoption of a circular layout method; and step 6, an interactive visual interface is generated. The layering circular layout generated through the method corresponds to a Voronoi tree graph layout, various visual coding modes are provided, the circular layout is optimized and adjusted in real time, various interactive modes are provided, and the layering circular layout can be applied to multi-point touch control equipment. The method and the device not only can be used for processing layering data of ordinary data sizes but also can be used for processing large-scale data sets.

Description

technical field [0001] The invention relates to a data interactive visualization method and device, in particular to a hierarchical data-oriented interactive visualization method and device. Background technique [0002] Such as figure 1 As shown, for hierarchical data, commonly known as tree-structured data, the relationships between data nodes include parent-child relationships between upper and lower nodes and brother relationships between nodes at the same level. The purpose of interactive visualization of hierarchical data is to visualize these two types of relationships, and to provide users with a variety of natural and convenient interactive ways to view data from different depth views or freely operate on data. [0003] The visualization techniques for hierarchical data are mainly divided into two categories: node connection graphs and region filling methods. The node connection graph uses straight or curved segments to connect data nodes in Euler space or hyperbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 吕琳赵海森杨承磊
Owner SHANDONG UNIV
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