Analyzing multi-scale spatial point patterns in a pyramid modeling framework

Analyzing multi-scale spatial point patterns in a pyramid modeling framework
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在金字塔建模框架中分析多尺度空间点模式

DOI:
10.1080/15230406.2022.2048419
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发表时间:
2022
影响因子:
2.5
通讯作者:
Xu, Jinwen
Xu, Jinwen
中科院分区:
地球科学3区
文献类型:
--
作者:
Qiang, Yi;Buttenfield, Barbara;Xu, Jinwen

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许多空间分析方法都受到可修改面积单元问题(MAUP)的缩放问题的影响。本文介绍了金字塔模型(PM),这是一种在3D环境中集成空间和空间尺度以支持多尺度分析的分层数据框架。检验样方密度和核心密度,这是常用的措施点模式的PM的效用。从具有不同缩放参数(即,样方和带宽)的模拟点集计算的两个度量在PM中表示。PM允许检查在所有不同尺度下计算的密度度量的变化。3D可视化技术(例如体积显示,等值面和切片)允许用户观察不同尺度下空间模式之间的嵌套关系,并了解空间分析中的缩放问题和MAUP。开发了一个具有交互式控件的工具,以支持PM内部模式的可视化探索。除了点模式的措施,PM在分析其他空间指标,如空间自相关指标,回归分析系数和空间模型的准确性措施的潜力。PM的实施进一步推进了时空分析的多尺度框架的发展。
Many spatial analysis methods suffer from the scaling issue identified as part of the Modifiable Areal Unit Problem (MAUP). This article introduces the Pyramid Model (PM), a hierarchical data framework integrating space and spatial scale in a 3D environment to support multi-scale analysis. The utility of the PM is tested in examining quadrat density and kernel density, which are commonly used measures of point patterns. The two metrics computed from a simulated point set with varying scaling parameters (i.e. quadrats and bandwidths) are represented in the PM. The PM permits examination of the variation of the density metrics computed at all different scales. 3D visualization techniques (e.g. volume display, isosurfaces, and slicing) allow users to observe nested relations between spatial patterns at different scales and understand the scaling issue and MAUP in spatial analysis. A tool with interactive controls is developed to support visual exploration of the internal patterns in the PM. In addition to the point pattern measures, the PM has potential in analyzing other spatial indices, such as spatial autocorrelation indicators, coefficients of regression analysis and accuracy measures of spatial models. The implementation of the PM further advances the development of a multi-scale framework for spatio-temporal analysis.
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