KEY CONCEPTS & TECHNIQUES IN GIS Part 4 pps

... 7/13/2007 4: 15 PM Page 34 30 KEY CONCEPTS AND TECHNIQUES IN GIS Figure 14 Typical soil map Typical soil map Recoded soil map Simplified map with 10 different soil types Attribute Code Soil Type 4 4 1 3 2 10 10 9 6 6 7 5 7 9 8 8 1 A1Z A3X A2Z A1H B1H B3X B1X C3H C2H C2X 2 3 4 5 6 7 8 9 10 Attribute Recode New Soil 1 1 A B C 2 3 2 3 Figure ... Relationships Albrecht-3572-Ch-05...

Ngày tải lên: 05/08/2014, 21:22

... Page ix 6 Combining Spatial Data 37 6.1 Overlay 37 6.2 Spatial Boolean logic 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 ... 978-1 -41 29-1015-6 ISBN 978-1 -41 29-1016-3 (pbk) Typeset by C&M Digitals (P) Ltd, Chennai, India Printed and bound in Great Britain by TJ International Ltd Printed...

Ngày tải lên: 05/08/2014, 21:22

... different 6 KEY CONCEPTS AND TECHNIQUES IN GIS Figure 4 Geographic relationships change according to scale Albrecht-3572-Ch-01.qxd 7/13/2007 4: 14 PM Page 6 Albrecht-3572-Ch-01.qxd 7/13/2007 4: 14 PM ... 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...

Ngày tải lên: 05/08/2014, 21:22

... 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 ... Page 22 24 KEY CONCEPTS AND TECHNIQUES IN GIS tool to learn about different restaurants around the hotel we are staying at. In the second case, we may want to specify ‘Tha...

Ngày tải lên: 05/08/2014, 21:22

... expanded this view into a whole network of spheres of influence. Albrecht-3572-Ch-07.qxd 7/13/2007 4: 16 PM Page 47 44 KEY CONCEPTS AND TECHNIQUES IN GIS We start out with three input layers – towns, ... 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 combinatio...

Ngày tải lên: 05/08/2014, 21:22

... performed (as all cells 2 144 3 22332 22 345 12 345 11155 Figure 39 Zones of raster cells Albrecht-3572-Ch-08.qxd 7/13/2007 4: 16 PM Page 53 64 KEY CONCEPTS AND TECHNIQUES IN GIS intermediate files and ... 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 t...

Ngày tải lên: 05/08/2014, 21:22

... 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 2 34 Z Z 567 Φ 3 Φ 2 Φ 3 Figure 56 Application of splines ... temperature Albrecht-3572-Ch-11.qxd 7/13/2007 4: 18 PM Page 78 74 KEY CONCEPTS AND TECHNIQUES IN GIS relationship. Alternatively, we could look at the attribute v...

Ngày tải lên: 05/08/2014, 21:22

... GIS Albrecht-3572-Ch-11.qxd 7/13/2007 4: 18 PM Page 84 90 KEY CONCEPTS AND TECHNIQUES IN GIS Coordinate Location in a Cartesian or polar coordinate system dBASE™ Originally a database program, it has ... particularly promising for urban applications (Batty 2001; Benenson et al. 2002; Deadman and Gimblett 19 94; Dean et al. 2000; Westervelt and Hopkins 1999). 84 KEY CONCEP...

Ngày tải lên: 05/08/2014, 21:22

... reasoning and, 77–78 invention of, 25 operations, 25–27, 26, 40 spatial, 40 41 , 40 buffer, 43 , 89 inward/inverse, 42 operation, 37, 41 44 , 48 , 51 in spatial search, 43 surprise effects in, 43 CA. ... 51 buffer, 37, 41 44 , 48 , 61 combining 43 44 filter, 31 focal (neighborhood), 62 GIS, 37, 58, 89, 91, 92 logic, 26 overlay, 37 41 , 43 , 48 , 51, 54, 89 raster, 52 r...

Ngày tải lên: 05/08/2014, 21:22

... Albrecht-3572-Index.qxd 7/13/2007 4: 20 PM Page 106 Albrecht-3572-Index.qxd 7/13/2007 4: 20 PM Page 108 Albrecht-3572-Index.qxd 7/13/2007 4: 20 PM Page 107

Ngày tải lên: 05/08/2014, 21:22