CARTOGRAPHICAL COMMUNICATION AND ESTIMATION OF ENTROPY 1 SQ CM OF A TOPOGRAPHICAL MAP A SCALE OF 1 : 1000000
KARTOGRAFSKA KOMUNIKACIJA I ODREDJIVANJE SADRZAJA INFORMACIJA 1 SQ CM TOPOGRAFSKE KARTE 1: 1000000
The author gives a definition of geodetical and cartographical information. The cartographical presentations as analogical, structural reality models are included in the communication process wherein various experts, cartographers and users directly cooperate. Because of the noise which occurs in the communication channel, the cartographical information is often deformed and does not correspond to the real state. The necessary corrections are carried out by an expert who changes or completes his reality model with the new basic information, or by a cartographer coding the new information by means of the cartographical symbol language. The user can in this case correct his conception of reality. The cartographical communication process is a dynamic one, and the cartographical presentation is an information store of great capacity. The author further uses the information theory analysing the entropy 1 cm squared of a topographical map on a scale of 1 : 1000000. By contents, maps are divided into systems (settlements, special signs, roads, hydrography, relief) and changed into direct elements (special attention is given to the relief as a continual system of map contents). The entropy is determined separately for each system. Since the whole map contents are bound up with the relief the sum of entropies gives the final entropy. This numerical analysis of information map contents indicates the degree of obsolescence, showing the difference between the cartographical information and reality. The coefficient of allowable information losses defined by the information contents of the newest aeropictures stimulates correction of the deficiency or reprinting of the map. /TRRL/
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Corporate Authors:
Referalni Centar Sveucilista u Zagreb
Trg Marsala Tita 3
Zagreb, Croatia, Yugoslavia -
Authors:
- Zdenkovic, M
- Publication Date: 1976
Language
- Undetermined
Media Info
- Features: Figures; References; Tables;
- Pagination: 83 p.
Subject/Index Terms
- TRT Terms: Aerial photography; Communications; Entropy (Communications); Geodetic surveying; Highways; Information management; Information, data, and knowledge; Mapping; Maps; Mathematical models; Photogrammetry; Theses; Topography
- Uncontrolled Terms: Models
- ITRD Terms: 4006: Aerial photography; 2755: Highway; 8555: Information documentation; 4074: Map; 4004: Photogrammetry; 8597: Thesis
- Subject Areas: Data and Information Technology; Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;
Filing Info
- Accession Number: 00147957
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Report/Paper Numbers: Thesis
- Files: ITRD, TRIS
- Created Date: May 11 1977 12:00AM