地图信息衰减中关键比例尺的研究
On Catastrophe-scale in Course of Map-information Attenuation
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摘要: 提出了一种基于分维扩展理论的关键比例尺确定方法,认为地图目标的自相似性是随着比例尺的变化呈衰减趋势变化,可以反映在图面信息量的变化上,并借助分维扩展中的反“S”曲线模型来确定两个已知比例尺之间的关键比例尺。Abstract: A new method for the determination of the catastrophe-scale based on the theory of the extended fractal dimension is presented.From the large-scale to the small-scale,the self-similarity of map object descends gradually,and reflects as the change of the map information.Make use of the extended fractal model of inverse "S" can determine the catastrophe-scale between two known scales.
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