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SuperMap iServer REST API is a comprehensive, resource-oriented application programming interface that exposes the full spectrum of GIS functionalities through standard HTTP protocols. Built upon the Representational State Transfer (REST) architectural style, this API encapsulates core GIS capabilities—including map services, data management, spatial analysis, 3D visualization, and distributed processing—as addressable resources uniquely identified by URIs. By adhering strictly to REST principles, SuperMap iServer transforms complex GIS operations into simple, lightweight HTTP interactions that support multiple representation formats (JSON, XML, HTML, binary images) and standard HTTP methods (GET, POST, PUT, DELETE). This design enables developers, system integrators, and GIS professionals to build web and mobile applications that seamlessly integrate with enterprise geospatial infrastructure, whether for dynamic map visualization, real-time spatial querying, or large-scale distributed spatial analytics .

Putnins P5 Projection is a mathematical method in map projections, belonging to the pseudocylindrical projection category. It is primarily used to transform the Earth's three-dimensional surface into a two-dimensional plane in a specific manner, balancing distortions in area, shape, or angle. It is suitable for thematic mapmaking and the visualization of geographic information for specific regions.

Putnins P4 Projection is a pseudocylindrical projection that maintains approximate accuracy in area proportions to balance map distortion, making it suitable for mapping mid-scale regions. This projection compresses distortion in polar areas while generally achieving a compromise between shape and area representation, positioning it as a balanced solution among pseudocylindrical projections.

Putnins P2 Projection is a pseudocylindrical equal-area map projection proposed by R. V. Putnins in 1934, primarily used for creating thematic world maps. This projection employs a specific mathematical method to transform the curved geometric features of the Earth onto a plane. It is characterized by a central meridian that is a straight line with a length half that of the equator, and parallels that are straight lines parallel to the equator, with spacing decreasing as latitude increases. There is no distortion along the central meridian or at latitudes 36°46′ N/S, but distortion gradually increases farther away from these areas.

The Kavrayskiy VI Projection is a pseudocylindrical equal-area map projection. Its central meridian is a straight line with a length half that of the equator, while the other meridians are symmetrical sinusoidal curves curving toward the central meridian. The parallels are equally spaced straight lines perpendicular to the central meridian. The projection maintains true scale at latitudes 47°33′ N/S, with no distortion along these specific parallels. Although significant distortion occurs in polar regions, the overall distortion level is lower than that of most pseudocylindrical projections. Due to its equal-area property, it is suitable for statistical maps that require accurate representation of area proportions.

Kavrayskiy V Projection is a map projection proposed by Soviet scholar Vladimir Kavrayskiy. It belongs to the pseudocylindrical projection family and aims to balance angular and areal distortion, with minimal distortion near the standard latitudes of 47°33′ N/S. It is suitable for global map production, though some distortion remains in polar regions.

Tokyo UTM Zones are historic projected coordinate systems applying the UTM projection to the Tokyo datum (Bessel 1841 ellipsoid), serving as Japan's fundamental geodetic framework until 2002. While modern systems like JGD2000/JGD2011 UTM zones have superseded them, these zones remain essential for interpreting 20th-century Japanese geographic data.

Sri Lanka Kandawala Grid is a historic projected coordinate system based on the Kandawala datum, established during the British colonial period to serve as the foundational mapping framework for the island nation. Developed in the early 20th century, this system employs a transverse Mercator projection to support cadastral surveying, topographic mapping, and engineering projects throughout Sri Lanka. While modern systems like SLD99 / Sri Lanka Grid 1999 (EPSG:5235) have been introduced for contemporary applications, the Kandawala Grid remains essential for interpreting the extensive archive of 20th-century geographic data across the country.

Madagascar Laborde Grid is a historic oblique Mercator projection system designed in 1926 by French engineer Jean Laborde specifically for Madagascar's unique geography. Based on the Tananarive datum, it remains the legally mandated projection for the island nation.

South Africa Lo System (Lo System, short for "Landmeter-generaal Lo-sone" or "Surveyor-General Lo zones") is a suite of projected coordinate systems established by the Office of the Surveyor-General of South Africa to serve as the foundational mapping framework for the country. Developed as a national standard, this system employs a transverse Mercator projection divided into multiple 2° longitude-wide belts to support cadastral surveying, engineering projects, and topographic mapping throughout South Africa. While modern implementations like Hartebeesthoek94 / Lo zones (EPSG:2050-2058) provide WGS84-compatible alternatives, the historical Cape / Lo zones (EPSG:22275-22293) remain essential for interpreting the extensive archive of 20th-century geographic data across South Africa .