Spatial Thinking: Unterschied zwischen den Versionen

Version vom 2. Dezember 2012, 15:45 Uhr

In a conference, Robert Weibel (Weibel 2012) proposed to discuss and compile a set of laws and theses coming from GIS Science which could be of interest to a broader audience.

Hereafter there is a first compilation of such candidate laws and theses of spatial thinking:

• "Tobler's First Law": "Nearby things are more related than distant things", Spatial Autocorrelation (Tobler 1970).
• "First Law of Cognitive Geography": "People think closer things are more similar" (Montello and Sarah Fabrikant)
• "Limited Map Space Conflict": All important places are at the corners of four map sheets. (Goodchild 2004)
• "Modifiable Areal Unit Problem" (MAUP): A potential source of error that can affect spatial studies which utilise aggregate data sources into higher level units and scales (Ratcliffe)
• "Spatial heterogeneity problem": Space is non-stationary and has uncontrolled variance (included by the MAUP but considering only variety, not scale/aggregation). Means that sampling is problematic; one must visit all of it to understand its full complexity. Results depend explicitly on the bounds of the study. (Goodchild 2004)
• "Scale/resolution problem": A fundamental property of any geographic representation. Two characteristics: spatial resolution and spatial extent. Conflict over "large" and "small". What does it mean in digital data? (Goodchild 2004)
• "Problem of absolute values in areal/linear features". A counting value, like no. of people, represented in an area (or line) should not be be displayed as an absolute value but relative to the area size, i.e. people per square. (Goodchild 2004).
• Geographic modeling problem: How to model and encode object and field entities? As vector or raster?
• Homomorphic mapping problem: How to map a message to a cartographic signature? A map consists of a combination of point, line and area symbols and text. Bertin (1974) defined a set of "graphical variables" which can be varied and which can be part of a rendering/styling configuration: FORM, SIZE, PATTERN, COLOR and LIGHTNESS. Point and area symbols as well as text fonts can additionally be displayed with a frame.
• Communication problem

References:

• Weibel, R. (2012): "Keynote OGRS 2012 Conference", 26. october 2016, unpublished.
• Openshaw, S. (1984): "The modifiable areal unit problem", In: Concepts and Techniques in Modern Geography 38: 41., see also http://www.jratcliffe.net/research/maup.htm
• Goodchild, M. (2004): "Spatial Thinking..." (p.53 and 54 ). http://www.csiss.org/SPACE/workshops/2004/SAG/files/goodchild_spatial.pdf
• Tobler, W.R. (1970): A computer movie simulating urban growth in the Detroit region. Economic Geography46: 234-240

See also: Geovisualisierung