THE MAP OF AVERAGE LAND TRANSACTION PRICES - A NEW POLISH CARTOGRAPHIC PRODUCT

The map of average land transaction prices constitutes a new cartographic elaboration that is to be drawn up for the whole Poland. It has been defined in the Regulation of the Council of Ministers from October 3rd 2011 on the types of cartographic thematic and special products. According to the regulation the digital map of average land transaction prices should represent variations in average transaction prices of building and agricultural lands for the entire country in relation to the basic, three-level administrative division of the country. The paper brings closer to the idea of a map of average land transaction prices concept mentioned in the Regulation from 2011. Moreover, the authors propose the concept of the map of average transaction prices corresponding to the 1: 1000 000 detail levels for the Mazowieckie Voivodship area covering, among others, the city of Warsaw itself. In the first stage the statistical data collected for the purpose of the map elaboration have been characterized and analyzed. The result of that step was statistical indicators calculated for particular counties, which can be shown on the map having been developed. In the next stage the map concept and its design principles are introduced. With the usage of selected cartographic presentation methods the example maps were prepared. Methods and forms of cartographic presentation were chosen regarding the character of the presented phenomena, as well as a reference type of the spatial data used.