BACKGROUND The aim of the study is to present the methods for visualization of epidemiological data using digital contour maps that take into account administrative division of Poland. MATERIALS AND METHODS The possibility of epidemiological data visualization in a geographical order, limited to the administrative level of the country, voivodeships and poviats (countics), are presented. They ...

Geocoding, the process of matching addresses to geographic coordinates, is a necessary first step when using geographical information systems (GIS) technology. However, different geocoding methodologies can result in different geographic coordinates. The objective of this study was to compare the positional (i.e. longitude/latitude) difference between two common geocoding methods, i.e. ArcGIS (...

7 Heihe River Basin is located in the arid inland area of northwest China and is facing 8 serious water shortage problems. Since irrigation is the largest water consumer in the 9 middle reaches of the Basin, it is crucial to study the crop yields and water 10 consumption in order to improve the agricultural water productivity and to support 11 sustainable economic development in this region. Ba...

The problem of soil pollution by heavy metals has been receiving an increasing attention in the last few decades. Geostatistics module in ArcGIS, could not however efficiently simulate the spatial distribution of heavy metals with satisfied accuracy when the spatial autocorrelation of the study area severely destroyed by human activities. In this study, the classification and regression tree (C...