The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
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(c) the new or changed roads
(d) the disappearance roads
h-
pi
(e) the generalization disappearance
Percentage
Types of
updates
Percentage
(item/road
Length
(item /
updates)
length
before
updating)
New or
changed
125.3
56.34%
11.97%
Disappearance
9.3
4.19%
0.89%
Generalization
disappearance
87.8
39.47%
8.39%
Total
222.5
100%
21.25%
Total length of
roads before
updating
Total length of
1047.2
roads after
1075.4
updating
Table 1 Statistics for updates and road data (Length unit: Km)
REFERENCES
Badard, T. and Lemarie, C. Propagating updates between
geographic databases with different scales, Chapter 10 of
Innovations in GIS VII: GeoComputation, Atkinson, P. and
Martin, D. (Eds.), Taylor and Francis, London, 1999.
Badard, T. Towards a generic updating tool for geographic
databases . 1998, In the proceedings of GIS/LIS’98 Annual
Exposition and Conference. Fort Worth, Texas, USA, 352-363.
Bailey, S., Parent C and Spaccapietra, S. 2004, Modeling
geographic data with multiple representations, International
Journal of Geographic Information Systems, 18(4):329-354.
China Standardization Office, 2003, Compilation of Standards
for Mapping and Surveying-Map Making and Printing, China
Standardization Office, Beijing.
Devogele, T., Trevisan J. and Raynal L. 1996, Building a multi
scale database with scale transition relationships , In: Kraak,
M.J., Molenaar M. and Fendel E. M., (eds), it Advances in GIS
Research 2, Taylor & Francis, London. 337-351.
Filin, S. and Doytsher, Y. 1999,Linear approach to map
conflation: matching of polylines, Surveying and Land
Information Systems, 59(2): 107-114.
Gabay, Y. and Doytsher, Y. Automatic adjustment of line maps ,
Proceedings of the GIS/LIS'94 Annual Convention, Arizona,
Phoenix, USA, 1994, 1:333-341.
Hu Yungang, 2007, road data updating based on map
generalization, doctoral dissertation, China.
Jones, C. B., Kider D.B., Luo L.Q., et al. 1996,Database design
for a multi-scale spatial information system, International
Journal of Geographical Information Systems, 10(8):901-920.
Figure 6. Road data, updates and road data updated