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Land value map as a source of information about local real estate market 67

The effect of these factors may explain the spatial differentiation of prices of land real estates intended for residential building. The research corroborates the preferences and be-haviour of potential purchasers of real estate.

Examples of cartographic visualisation of the results of the research are shown in Figurę 2.

3. Visualising the results of real estate price and value analysis

While working on the subject layer of transaction price registration, it was assumed that it should provide a user with a broad opportunity of making use of the information contained therein, particularly in conducting their own analyses which aim, e.g. at establish-ing a real estate price.

The transaction price registration layer should enable:

—    a graphic presentation of a real estate which is the subject of a transaction;

—    obtaining detailed information about a transaction indicated on the map;

—    selecting the real estate properties which were the object of trade, based on selected attribute values;

—    presentation of the basie statistic values for selected real estates;

—    exporting the data concerning the selected transactions.

Part of the study included the calculation of the transaction price registration layer with the use of ArcGis software (Fig. 3).

Fig. 3. Presentation of the basie statistic values of transaction prices for selected real estate properties Source: own study