Mathematical elements include map projection, mapping network, scale, geodetic control foundation and orientation mark. Geographical elements refer to map contents, including physical geographical elements and socio-economic elements. Auxiliary elements are contents that are conducive to reading and using drawings, such as drawing name, drawing number, legend, sketch, illustration, joint table, map data, compilation instructions, etc.
Different types of maps have different map elements. The general name of mathematical elements, geographical and humanistic elements and auxiliary elements that constitute the content of a map. Mathematical elements are map elements formed according to certain mathematical laws or with mathematical significance, including coordinate network, control points, map scale and map orientation elements.
Conceptual explanation
Geographical and human elements are the main contents of the map, which can be divided into natural elements according to their nature, including ocean, land water system, geology, geophysics, geomorphology, meteorology, hydrology, soil and vegetation, animals and so on. Socio-economic factors, including residential areas, transportation networks, fields and political, administrative, demographic, urban, historical, cultural and economic phenomena or objects. Environmental factors refer to the environmental conditions of human life, including natural disasters and natural protection.
Auxiliary elements refer to descriptive or instrumental contents that are located outside the outline of the map and have certain reference significance for reading and using the map, including: map name, map number, notes between maps, legend, digital scale and graphic scale, slope scale, drawings, materials and descriptions of three north directions and other mapping methods.