CIPA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey 
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be carried on during this process: creating the spatial objects, 
in AutoCAD and defining the attribute data concerning each 
spatial object. 
1929 cadastral plans that have been updated during the site 
survey are used as the reference base map. The spatial objects 
are digitized in AutoCAD R.14 and transferred into ArcView 
3.2. During the vectorization of the drawings in AutoCAD, 
layers are produced in point, line or polygon format defining 
the type of the spatial objects after they are transferred into 
GIS media. The items, which are preferred to represent their 
existence with reference to their location only, have been 
showed in “points” such as architectural elements (i.e., door, 
window, fireplace, cupboard, etc); street elements (i.e., 
electric box, firehose, telephone post, etc.) and environmental 
features (i.e., tree, viewpoints, etc.). Features that have length 
are represented in “lines”, such as topographical lines, 
pedestrian-vehicular traffic direction, etc. Items having 
boundaries and representing an area have been described in 
“areas” such as building block, building lot, building, space 
(room), etc. They are represented as closed polygons. Every 
single layer that has been used in AutoCAD is defined with 
spatial data and the types of spatial object class for each title 
is established. (Figure 1) 
Figure 1. Created spatial objects through AutoCAD 
At the second phase, the collected data through survey sheets 
are classified into meaningful data groups so that they would 
be handled during the further phases as well. According to 
the topics that would be necessary for the analyses and 
evaluation stages, thematic clusters of spatial objects and 
attribute data have been established. (Appendix I) 
During this process content of each group has been studied in 
detail by establishing typological sub-groups according to the 
evaluation of collected data by survey forms. Afterwards, 
they are defined with a code number or code title so as to be 
recorded into the system according to the format of designed 
database. A descriptive legend and typological drawings 
explaining the detailed properties and coding system of all 
groups have been finalized with the same manner. By this 
way the structure of an utilizable documentation system has 
been established for the record of collected data. (Appendix 
II) 
Data Entry: Different data types coming from different 
sources have been entered into the system in the form of a 
relational database. At that point, a coding system giving an 
ID number for each spatial object has been established so as 
to define the relevant relational structure among the data 
groups: 
Coding System: A_0001 _a_01 _01 
According to this coding system, ID of the block, lot number, 
dwelling number, ID of the space (room) and ID of the 
architectural element are indicated respectively. 
Fields are defined which refer to different aspects of the 
spatial object and attribute data entry is made for each of the 
spatial object as different records in the table accordingly. As 
the attribute data is connected to the spatial data, by clicking 
onto each map feature, the attached attribute data could be 
seen. (Figure 2) 
The visual data collected from different sources, including 
aerial photograph of Antakya, cadastral maps, conservation 
maps and historical map-sketches that have been prepared by 
the travellers who have visited Antakya during late 19 Ih and 
early 20 lh centuries, maps prepared during 1930s showing the 
districts with important monuments-streets, ethnic structure 
of the neighborhoods of Antakya, have been converted into 
digital format 
All these materials have been transferred into GIS either by 
using geographical coordinates of the system or by aligning 
according to the selected common fix points, and thus, 
georeferenced raster images are provided. Since the historical 
maps haven’t been produced according to the rules of the 
coordinate system of contemporary maps, their overlay with 
the existing maps was not precise. 
Other visual data such as old and new photographs from the 
city and Zenginler District as well as engravings produced by 
the travellers have been scanned and converted into JPG files. 
They are attached to the related spatial objects using the 
hyperlinking property of GIS. Thus, by clicking onto related 
map feature, the linked visual data could be visualized as 
well. (Figure 3) 
Figure 3. Attachment of JPG files