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m Figure 3: Graphical documentation of Prague underground is organized into simple hyperenvironment according The 
| stations and their connections (topoSkop viewer). tion. 
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methods for definition of links within picture, which REFERENCES homc 
| enable hypertext document developer to create “sen- fent: 
| sitive map”. This mechanism is very limited and are [1] Bouille, F. 1994. Towards 2000: The actual main m. 
" not appointed for true relations between GIS data. trends in future GIS. Proceedings of Europe in Boris 
o It does not provide any spatial query mechanism for Transition: The Context of GIS, Brno'94, pp. K- 
the creation of hyperlinked documents. It seems to 13-K-27, MU Brno. The | 
be helpful for hyperlink databases (such as WWW) of ex 
to incorporate some basic GIS technology to provide [2] Charvét, K., Limpouch, A. 1995. Quo Vadis GIS: Io ; 
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On the other side it should be useful to provide some SOFSEM’95, LNCS 1012, invited paper, pp.334- of br 
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GIS systems and applications. Live true links be- to th 
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vironment which will make future access to necessary text of GIS, Brno'94, pp. K-2-K-5, MU Brno. imag 
es details of information easier and more extensive. 1986 
© The most simple solution provides data link between [4] OGIS Project Members, 1994. The Open Geo- 
4 reference areas and groups of layers. We used this data Interoperability Specification. Draft Base 
data organization for archive of graphical documen- Document — OGIS Project Document 94-0251R1, 
tation of Prague underground (see Figure 3) as well OGIS Ltd., Wayland, USA. To d 
as for data resources of several civil councils (district ite N 
Chrudim, Czech Republic). From experience with our [5] Spatial Archive Interchange Format: Formal Def- the t 
customers, this method provides quite effective tool inition. Release 3.1, April 1994, Surveys and sais 
"ow ; = : dom 
for access within larger collection of data layers which Resource Mapping Branch, Ministry of Envi- Hess 
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International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B3. Vienna 1996