KEY CONCEPTS & TECHNIQUES IN GIS Part 5 doc

... study in detail in the next chapter. Albrecht- 357 2-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 ... revisit this in the next chapter. Core Figure 28 Inward or inverse buffer Figure 29 Corridor function Albrecht- 357 2-Ch-06.qxd 7/13/2007 5: 08 PM Page 42 50 KEY CONCEPTS...

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... discussed in Chapter 9. 2211 2331 23 11 22 1234 56 78 1234 55 55 558 8 57 87 85 88 55 = Zone grid Value grid Figure 46 Value grids as spatial lookup tables Albrecht- 357 2-Ch-08.qxd 7/13/2007 4:16 PM Page 58 All ... are decreasing in importance. Aspect Slope 36% 20° 14° 8 .5 2.9° 1.1° 25% 15% 5% 0 45 90 1 35 180 2 25 270 3 15 2% Figure 50 Derivation of slope and aspe...

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... modeling 50 8 Map Algebra 51 8.1 Raster GIS 51 8.2 Local functions 53 8.3 Focal functions 55 8.4 Zonal functions 56 8 .5 Global functions 57 8.6 Map algebra scripts 58 9 Terrain Modeling 59 9.1 ... polynomials 67 Figure 55 Historical use of splines 68 Figure 56 Application of splines to surfaces 68 Figure 57 Exact and inexact interpolators 69 Figure 58 Geometric mean...

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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- 357 2-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 arisi...

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... 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 GIS Albrecht- 357 2-Ch-02.qxd 7/13/2007 5: 07 ... processing. In the light of the costs involved in creating or accessing existing data this is not a realistic proposition for most readers. GIS own their right of existence...

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... Relationships Albrecht- 357 2-Ch- 05. qxd 7/13/2007 4: 15 PM Page 29 32 KEY CONCEPTS AND TECHNIQUES IN GIS new data based on a new interpretation of already existing data. There is no category ‘vegetation’ in the original ... BrushForest Vegetation Figure 17 Recoding to derive new information Albrecht- 357 2-Ch- 05. qxd 7/13/2007 4: 15 PM Page 31 38 KEY CONCEPTS AND TECHNIQ...

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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 56 7 Φ 3 Φ 2 Φ 3 Figure 56 Application of splines ... splines is computing intensive; the results definitely look pretty but may not be a good characterization of a natural landscape. Similar to IDW, the input points remain intact...

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... spatial interpolation method that incorporates information from known points according to the inverse of their distance to the unknown point ISO International Standards Organization – instrumental in ... modeling language (OMG 20 05) does for 86 KEY CONCEPTS AND TECHNIQUES IN GIS Albrecht- 357 2-Ch-12.qxd 7/13/2007 4:19 PM Page 86 ABM Agent-based modeling system – a simulation too...

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... 66 focal (neighborhood), 51 , 52 , 55 , 55 56 , 62, 90 global, 51 , 57 58 local, 51 , 53 54 , 54 , 56 neighborhood (focal), 51 , 52 , 55 , 55 56 , 62, 90 zonal, 51 , 54 57 , 57 fuzzy reasoning, 77–78, 90 Geary’s ... 91–92 zonal functions, 51 , 56 57 , 57 ZonalMax, 59 57 zonal number, 57 zonal operation, 49, 61 INDEX 103 Albrecht- 357 2-Index.qxd 7/13/2007 4:20 PM P...

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... Albrecht- 357 2-Index.qxd 7/13/2007 4:20 PM Page 106 Albrecht- 357 2-Index.qxd 7/13/2007 4:20 PM Page 108 Albrecht- 357 2-Index.qxd 7/13/2007 4:20 PM Page 107

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