Geographical information systems and tropical diseases

Geographical information systems and tropical diseases.

The geographical information system (GIS) revolution started in the mid 1980s and has since snread to all countries of the world. A GIS is a comput&software package that is concerned with the capture, storage, manipulation, query, display and analysis of any and all types of geographical information, (BLJRROUGH, 1986; CHORLEY, 1987; LAURINI & THOMPSON, 1992; ESRI, 1993). There are now many diff...

Geographical Domain and Geographical Information Systems

In the eld of geography, we have beenexamining the contribution of the morpho-genetic rep-resentation to the comprehension of the cycle: reality,representation, model, reality. A distinction is madebetween map and geomap based on the notion of locus-object. 1. Foundations and limits of cartographic rep-

On the Geographical Distribution of Tropical Diseases in Africa

By R. W. Felkin, M.D. Pp. 79. Edinburgh: William F. Clay. 1895. Dr. Felkin divides the vast area of Africa intoeight divisions, and adopts a system of symbols which by their shape* colour and number indicate the presence, the prevalence or mtense prevalence of the diseases common to each region. J*16 reader has therefore only to master the significance 01 the symbols, and then by looking at the...

Geographical Information Systems An Overview

Although many GIS have been successfully implemented, it has become quite clear that two-dimensional maps with most complex contours and color schema cannot precisely present multidimensional and dynamic spatial phenomena. Most GISs in use today have not been designed to support multimedia data and therefore have very limited capability due to the large data volumes, very rich semantics and ver...

Principles of Geographical Information Systems