Cartographic Methods of Presentation the Average Transaction Prices of the Undeveloped Land

The article presents a description of basic cartographic methods used to visualize spatial data. Information on average transaction prices of the undeveloped land in Warmińsko-Mazurskie voivodeship, from The Agricultural Property Agency, Regional Office in Olsztyn, was the basis for map creation. Unified data allows the accurate presentation of information and highlights the differences in selected cartographic methods. The objective of this article is to describe the selection process of the best method for presenting spatial data by identifying the data structure and visualization purpose; as well as to describe the different types of data presentation for its potential use for work related to activities performed by professionals dealing with the real estate market and by individuals.