This paper describes a new multi-criteria land evaluation method, based on geomorphology and land cover, for the automated detection of suitable terrain for the sport of foot orienteering (footO). Reference data, in the form of areas already mapped and used for footO, was used to define criteria for geomorphology and land cover, and represents an expert knowledge component. The motivation for this research is that orienteering maps are often drawn for unfamiliar terrain that organizers of the event or mapmakers need to determine in advance, usually from base maps or by random reconnaissance. In a presented case study of Croatia and Slovenia, the geomorphology was derived from Digital Elevation Model over Europe (EU-DEM). The slope and aspect define components of the direction of the surface, and we tested the usability of these simple terrain parameters for the task. The CORINE dataset was used for the definition of the land cover. The results of the case study give potentially suitable areas for foot orienteering in Croatia and Slovenia, and in neighboring areas. Evaluation of the results, using reference areas as the control, proved that the proposed methodology gives a reliable indication of terrain suitability for orienteering. The method is simple, straightforward, and can be performed using standard GIS with common raster algorithms.
The paper presents the development of an automated procedure for creating a small-scale world political map from OpenStreetMap (OSM) data, and the map itself. A novel approach was used for cartographic processing, while the fitness for use of OSM data for this task was evaluated. It was anticipated and shown that creating a world political map from OSM data is a methodologically and technologically demanding task. The result was a political map of the world at a scale of 1:30,000,000, showing independent states, dependencies and areas of special sovereignty as in the OSM data set, with no adaptation to specific political recognition issues. A high degree of automation built on open-source software was achieved. The resulting map is an intermediate stage of production, requiring modest manual intervention for the final map. By allocating a code to the community (http://github.com/GEOF-OSGL/OSMPoliticalMap), we have provided opportunities for its continuing development.
2 January 2015 in International Journal of Cartography
In previous research we proved that meridians are straight lines and parallels are arcs of concentric circles on the map Nuova carta geografica dello Stato Ecclesiastico by J. R. Bošković and Ch. Maire, published in 1755. We also proved that the map was produced in a normal aspect conic projection equidistant along meridians. Knowing the map projection type is not enough. We need to know its parameters, too. In the first part of the paper, we described the procedure of determining standard parallels of the normal aspect conic projection equidistant along meridians. We proposed a procedure for determining projection parameters of an old map, especially its standard parallels, if the radius of the sphere in which the map was produced in is unknown. Constant C is introduced as a ratio of constant K and sphere radius R, both of which are unknown. The procedure is illustrated on the map Nuova carta … . Using the procedure, we obtained standard parallels φ1 = 41°50'N and φ2 = 44°30'N. In addition, we tested whether the obtained standard parallels are actually standard parallels in which the map was produced and determined the definitive standard parallels in which the map Nuova carta … has been produced.
The development of the State Border Geoinformation System of the Republic of Croatia (SBGiS), based on open-source technologies, has facilitated and accelerated the storage, processing, handling, analysis and visualization of large amounts of spatial data used in open border issues, as well as standard affairs on maintaining the regulated state border of the Republic of Croatia. Centralized data storage and their spatial visualization through an interactive map allows citizens to see the situation at the state border in real time, which significantly increases the safety of movement in the border zone, but also aids in the prevention of state border breaches. The SBGiS is the only system that has been established not only for maintaining a regulated state border but also for resolving border disputes and delimitation procedures. At the end of the paper, a proposal for future system upgrades is given.
This article presents the procedure for determining numerical scales based on the graphic scales drawn to process the graphic material in Volume VII of the Valvasor collection. To calculate the numerical scales, the miles drawn on the maps and their lengths in relation to one degree of the meridian were studied. A total of 22 different miles were drawn on the maps studied, of which the German mile was the most common. After calculating the numerical scales, it was found that the largest scale of the maps examined was 1:220,000 and the smallest was 1:11,200,000.