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The analysis of data quality on topographic maps
Govedarica, Miro (Author), Borisov, Mirko (Author)

URLURL - Presentation file, Visit http://www.geodetski-vestnik.com/55/4/gv55-4_713-725.pdf New window

Abstract
The data quality of topographic maps involves a degree of deviations of geometric and thematic content from their actual position and status in nature, respectively. For determining the geometric accuracy, comparative way of testing is usually applied, namely the comparison of measured values of topographic maps with "true" or "conditionally true" values (numeric data of positional and elevation network or data of a map in a larger scale, where thecontent errors of individual elements could be neglected in comparison due to differences in the scale of mapping). This method gives a direct accuracy assessment of printed maps and reproduction originals, as opposed to the experimental method which considers and determines errors in certain phases inthe process of making topographic maps. Geometric, and to a large extent thematic accuracy of topographic maps are not always reliable enough and depend on the way of surveying and the type of contents, i.e. from geodetic control points, which are more accurate, to vegetation whose positional accuracy is the worst.

Language:English
Keywords:cartography, topographic map, classic map, digital map, data quality
Tipology:1.03 - Short Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2011
Publisher:Zveza geodetov Slovenije
Number of pages:str. 713-725
Numbering:Letn. 55, št. 4
UDC:528.93/.94
ISSN on article:0351-0271
COBISS.SI-ID:5793377 Link is opened in a new window
Views:336
Downloads:147
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Record is a part of a journal

Title:Geodetski vestnik
Shortened title:Geod. vestn.
Publisher:Zveza geodetov Slovenije
ISSN:0351-0271
COBISS.SI-ID:5091842 New window

Secondary language

Language:Slovenian
Title:Analiza kakovosti podatkov na topografskih kartah
Abstract:
Podatki na topografski karti se geometrično in tematsko deloma razlikujejo od dejanskega stanja v naravi. Za določitev geometrične natančnosti se uporablja primerjava podatkov na karti s ŽpravimiŽ in Žpogojno pravimiŽ vrednostmi na natančnejšem viru. Pri tem se običajno uporabljajo numerični podatki položajnih in višinskih mrež ali podatki kart večjega merila, na katerih je mogoče primerjalno zanemariti napake posameznih objektov glede na merilo. Takšna metoda omogoča neposredno oceno natančnosti tiskanih kart in reprodukcijskih originalov v primerjavi z eksperimentalno metodo, pri kateri se obravnavajo in določajo napake posameznih faz v procesu izdelave topografskih kart. Geometrična in v veliki meri tematska natančnost topografskih kart nista vedno zadovoljivi, kar je odvisno od načina izmere in tipa vsebine, na primer od geodetskih točk, ki so natančnejše, do podatkov vegetacije, katere položajna natančnost je najslabša.

Keywords:kartografija, topografska karta, klasična karta, digitalna karta, kakovost podatkov

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