To compare two interpolation methods : IDW, KRIGING for providing properties (area) surface interpolation map land price, district 5, municipality of Tehran area 1
Ziary, Yousefali & Hormoz Safari
To provide a uniform and continuous map from required place needs the interpolation methods in order to anticipate unknown values. In this regard, there are different interpolation methods and geo statistical estimations. the important factors such as number, the local distribution of sampling points and the capability of interpolation model have an effective role in the accuracy of providing the zoning map, several methods such as the methods of Tisen polygons and weighting based on distance photograph (IDW) which are among customary methods, have been presented for the interpolation of a variable, AT any rate, because of not considering the correlation between datum and not optimizing the size and from of used neighborhood, these methods often havennt enough precision . Geostatistical theory is a branch of applied statistics that plays an effective role in the description and analysis of ground observation. In recent years, the development of Geostatistical theories and techniques has made many improvements in analyzing local datum in GIS environment. Using analysis based on Geostatistical theories decreases very much corresponding defects and limitations to classical statistical which have been developed by the random distribution theory of processes and variables, Datum interpolation is important for local analyzing by GIS, because many used maps for GIS operation are made by interpolation. In fact, it is possible to make continuous and smooth models through the time and local distribution of datum which are studied by interpolation. In research, two methods, kriging, to IDW have been examined for land price zoning and their advantages and disadvantages were considered. the evaluation and test of error which two interpolation models, have been studied by willmott way (1989) that shows kirging methods has a higher precision than IDW method.
Event: XXX FIG Working Week and General Assembly : Strategic Integration of Surveying Services
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