The five-times enlarged base map manuscripts from the often inaccurate topographic 
map at 1 : 250,000 scale, containing little more than few rivers and contours, are 
not unusual. Compilation of thematic data on such a mapping base Is a nightmare, 
even when the mapping accuracy requirements are relaxed to be compatible with the 
geometric accuracy of photointerpretation. Besides, the single-purpose resource 
maps are being replaced by the multi-purpose, integrated resource maps which 
record more resource and topographic data and require higher geometric accuracy of 
their cartographic representation. No single resource institute can compile all the 
thematic content for integrated resource maps. 
Approximate techniques o! resource mapping, employed by most resource 
agencies, cannot satisfy the growing need for better quality resource maps. Their 
importance is growing proportionally with the publie awareness about the scarcity 
of some natural resources, the negative effect of their thoughtless exploitation on 
the environment and with their cost. A new, more appropriate type of map for 
resource inventories is being sought and the opinions are divided as always when 
something new is being introduced. 
The above considerations led to design of production technology for the 
integrated resource map which consists of three parts: 
a) Compilation of base map; 
b) Compilation of resource data; 
c) Compilation and printing of resource maps. 
2.1. Compilation of Base Map 
The base map will be compiled at the Central Mapping Laboratories of the 
National Coordination Agency for Surveys and Mapping (BAKOSURTANAL). 
The orthophoto mapping procedure has been selected for production of the base 
map at 1 : 50,000 scale (1 : 25,000 in Java, Madura and Bali). Orthophoto maps 
provide a particularly suitable base for resource mapping. Their similarity to the 
original aerial photographs facilitates transfer of resource data delineated on the 
photographs to the orthophoto map. This is especially important in areas with no 
cultural features like roads and settlements. While the planimetric content of line 
maps in such areas is limited to rivers, lakes and outlines of forests, the orthophoto 
maps display practically all the features recorded by aerial photographs, including 
differences in vegetation cover and soils, in their correct geometric positions. 
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