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Lesson Navigation IconFundamental spatial concepts

Unit Navigation IconThe Scale

Unit Navigation IconGeoreferencing: Positioning and Projections

Unit Navigation IconSpatial Relations

Unit Navigation IconTopology, fundamental concept

Unit Navigation IconSpatial Distance and Properties of the Environment

LO Navigation IconDynamics of space

LO Navigation IconCharacteristics of space

LO Navigation IconInfluence of the dynamics of space on the spatial distance

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Characteristics of space

Let's summarize the mentioned concepts and terms as follows:

  • Homogeneous, isotropic space: Homogeneous surface, Euclidean distance, implicit path.
  • Heterogeneous, isotropic space: Heterogeneous surface, distance weighting, no directional friction characteristics, path related to the cumulative weighted distance.
  • Heterogeneous, anisotropic space: Heterogeneous surface, distance weighting, directional friction characteristics, path related to the cumulative weighted distance.

These three levels of modeling are illustrated below. At all levels, the distance is the basis of the measurement of proximity, distance or accessibility. The distance is weighted by the characteristics of the elements. The directional effect is expressed by the variation of the weighting, depending on the orientation. Hence, the gravitational force, considered as a friction element, is considered to be neutral in the case of a transversal path. The moving element may be self driven or driven by an external force. Keep in mind that by modeling the space the 3D reality is reduced to two dimensions. In this example, the third dimension is translated into a thematic component: The friction properties.

Three levels of modeling space properties.Three levels of modeling space properties.
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