KEY CONCEPTS & TECHNIQUES IN GIS Part 6 docx

... 62 56 KEY CONCEPTS AND TECHNIQUES IN GIS By default, the neighborhood is defined to be all eight cells touching the processing cell, plus the processing cell in the middle. As an interesting ... function Albrecht-3572-Ch-08.qxd 7/13/2007 4: 16 PM Page 55 60 KEY CONCEPTS AND TECHNIQUES IN GIS 9.1 Triangulated irregular networks (TINs) While the wire frame data at le...

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... (TINs) 60 9.2 Visibility analysis 61 9.3 Digital elevation and terrain models 62 9.4 Hydrological modeling 63 10 Spatial Statistics 65 10.1 Geo-statistics 65 10.1.1 Inverse distance weighting 65 10.1.2 ... 40 6. 3 Buffers 41 6. 4 Buffering in spatial search 43 6. 5 Combining operations 43 6. 6 Thiessen polygons 44 7 Location-Allocation 45 7.1 The best way 45 7.2 Gravity mo...

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... The position is part of a geometry that defines the boundary of that object. 2 KEY CONCEPTS AND TECHNIQUES IN GIS Albrecht-3572-Ch-01.qxd 7/13/2007 4:14 PM Page 2 ACCESSING EXISTING DATA 13 debate, ... handling are all important topics; but, in most instances, a standard textbook on database management would provide an adequate introduction. More interesting are concerns arising...

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... 14 KEY CONCEPTS AND TECHNIQUES IN GIS coordinate systems. The good news is that most GIS these days relieve us from the burden of translating between the hundreds of projections and coordinate ... comes at the price of losing control over how data is combined. The next chapter will deal with this issue of quality control in some detail. 16 KEY CONCEPTS AND TECHNIQUES IN...

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... what information there is in one feature class, then in the 6 Combining Spatial Data Albrecht-3572-Ch- 06. qxd 7/13/2007 5:08 PM Page 37 COMBINING SPATIAL DATA 39 The question ‘Which soils occur in ... soils occur in County C? Coincidence view Counties A B C D E Figure 24 Overlay as a coincidence function Albrecht-3572-Ch- 06. qxd 7/13/2007 5:08 PM Page 38 36 KEY CONCEPTS AND...

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... study in detail in the next chapter. Albrecht-3572-Ch- 06. qxd 7/13/2007 5:08 PM Page 44 42 KEY CONCEPTS AND TECHNIQUES IN GIS reserve (see Figure 28). A combination of the regular and the inverse ... discuss in the next chapter. Figure 36 Origin-destination matrix From Zone 1 Zone 2 Zone 3 Row sums Zone 1 27 4 16 47 Zone 2 9 23 4 36 Zone 3 0 6 20 26 Column sums 36 33 4...

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... TECHNIQUES IN GIS Bending of a Plank Abstraction Final Product Figure 55 Historical use of splines 1 10 10 8 8 6 6 6 X 810 6 X Y 4 4 4 4 2 2 2 0 2 234 Z Z 567 Φ 3 Φ 2 Φ 3 Figure 56 Application of splines ... ever-changing search 22 20 18 16 14 12 10 8 6 4 2 2 4 6 8 10 12 14 16 18 20 22 Figure 59 Geometric mean and geometric median Albrecht-3572-Ch-10.qxd 7/13/2007 5:09 P...

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... modeling language (OMG 2005) does for 86 KEY CONCEPTS AND TECHNIQUES IN GIS Albrecht-3572-Ch-12.qxd 7/13/2007 4:19 PM Page 86 ABM Agent-based modeling system – a simulation tool used to investigate ... that incorporates information from known points according to the inverse of their distance to the unknown point ISO International Standards Organization – instrumental in setting...

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... PM Page 93 INDEX 101 internet GIS user interfaces, 23 search engines, 21–22, 25 interoperability, 11 interpolation, 65 , 69 , 69 inverse distance weighting (IDW), 65 66 , 66 ,90 ISO. See International ... 98 100 KEY CONCEPTS AND TECHNIQUES IN GIS DTM (digital terrain model), 62 dynamic modeling, 58, 82, 86 ecologists, 71, 85 electromagnetic spectrum, 7 elevation, 21–22, 2...

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... Albrecht-3572-Index.qxd 7/13/2007 4:20 PM Page 1 06 Albrecht-3572-Index.qxd 7/13/2007 4:20 PM Page 108 Albrecht-3572-Index.qxd 7/13/2007 4:20 PM Page 107

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