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A Contour Map Visualization Method Considering the Influence of Value and Distance

A contour map and numerical technology, applied in the field of data visualization analysis, can solve problems such as single variables, and achieve the effect of ensuring fluency

Active Publication Date: 2022-07-19
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention proposes a contour map visualization method that takes into account the influence of both numerical values ​​and distances. and distance influence factors to obtain more intuitive and effective visualization effects

Method used

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  • A Contour Map Visualization Method Considering the Influence of Value and Distance
  • A Contour Map Visualization Method Considering the Influence of Value and Distance
  • A Contour Map Visualization Method Considering the Influence of Value and Distance

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Embodiment Construction

[0048] The present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the present invention is not limited thereto.

[0049] The present invention implements an algorithm of a method for visualizing a contour map that takes into account the influence of numerical value and distance. The flow is as follows: figure 1 As shown, its implementation method is divided into the following steps:

[0050] (1) Coloring distribution calculation in plane space

[0051] The steps for calculating the shading distribution in the plane space are as follows:

[0052] 1. For each known data point, compute a two-dimensional Gaussian distribution centered on itself. This step distributes the value of the scatter point into the space around it according to a Gaussian function. known point x i The thermal effect on the unknown point x is calculated by:

[0053]

[0054] 2. For a point x at any position in space, add up the thermal v...

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Abstract

The invention discloses a contour map visualization method taking into account the influence of numerical value and distance. The method superimposes the composite calculation of multiple coloring layers; uses the GPU parallel ability to simultaneously calculate the composite value of the distance influence degree and the value direction composite value of each point in the plane space by the sampling point; calculates the composite value of each point in the plane space, Contours are calculated by the contour algorithm. The invention defines the numerical meaning of the contour line by calculating the numerical influence and distance influence distribution of multiple sampling points on the plane space, and visualizes the data points under the consideration of numerical value and distance influence, so as to meet the analysis needs of users ; In the face of thousands of data sampling points, the entire visualization process can be completed in tens of milliseconds, ensuring the smoothness of interaction.

Description

technical field [0001] The invention relates to the field of data visualization analysis, in particular to a contour map visualization method taking into account the influence of numerical value and distance. Background technique [0002] In the power system, the increase of data scale and complex analysis tasks make analysts urgently need more intuitive and accurate visualization methods. corresponding changing trends. Contour maps are widely used to characterize the geographic distribution and change patterns of physical quantities through color and numerical values. Contour map was first used in map surveying and mapping related work, connecting adjacent points with equal elevation on the map into a closed curve, which constitutes a contour map. The features of the contour map can directly reflect the terrain features, for example, the places where the contour lines are particularly dense are often cliffs with sharp changes in the terrain. If the altitude in the contou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29G06Q50/06
CPCG06F16/29G06Q50/06
Inventor 郑文庭张元煌汪飞
Owner ZHEJIANG UNIV