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  2. Wikipedia : Graphics Lab/Resources/QGIS/Get ready

    en.wikipedia.org/.../Resources/QGIS/Get_ready

    Now, the mapmaker can collect precise GIS data from reliable sources and simply load them into QGis. Objects will be automatically placed in their exact coordinates, allowing the user to apply custom styles and output an accurate basemap, which may be the end product, or a background to host additional custom layers (icons, labels, a legend, etc.).

  3. JTS Topology Suite - Wikipedia

    en.wikipedia.org/wiki/JTS_Topology_Suite

    It is a foundation component in a software ecosystem of native, compiled executable binaries on Linux, Mac and Windows platforms. Due to the runtime construction of Java and the Java Virtual Machine (JVM), code libraries that are written in Java are basically not usable as libraries from a standardized cross-linking environment (often built ...

  4. QGIS - Wikipedia

    en.wikipedia.org/wiki/QGIS

    QGIS is a geographic information system (GIS) software that is free and open-source. [2] QGIS supports Windows, macOS, and Linux. [3] It supports viewing, editing, printing, and analysis of geospatial data in a range of data formats. Its name comes from an abbreviation of its previous name, Quantum GIS.

  5. Web Map Service - Wikipedia

    en.wikipedia.org/wiki/Web_Map_Service

    Open source software that provide web map services capability include: . deegree; GeoServer; MapServer; MapGuide Open Source; QGIS Server; Proprietary server software that allow providing web map services include:

  6. Geographic information system software - Wikipedia

    en.wikipedia.org/wiki/Geographic_information...

    QGIS (previously known as Quantum GIS) – Powerful cartographic and geospatial data processing tools with extensive plug-in support; SAGA GIS (System for Automated Geoscientific Analysis) – Tools for environmental modeling, terrain analysis, and 3D mapping; uDig – API and source code (Java) available.

  7. Robinson projection - Wikipedia

    en.wikipedia.org/wiki/Robinson_projection

    Table of examples and properties of all common projections, from radicalcartography.net; Numerical evaluation of the Robinson projection, from Cartography and Geographic Information Science, April, 2004 by Cengizhan Ipbuker

  8. Web Mercator projection - Wikipedia

    en.wikipedia.org/wiki/Web_Mercator_projection

    Formulas for the Web Mercator are fundamentally the same as for the standard spherical Mercator, but before applying zoom, the "world coordinates" are adjusted such that the upper left corner is (0, 0) and the lower right corner is ( , ): [7] = ⌊ (+) ⌋ = ⌊ (⁡ [⁡ (+)]) ⌋ where is the longitude in radians and is geodetic latitude in radians.

  9. OpenStreetMap - Wikipedia

    en.wikipedia.org/wiki/OpenStreetMap

    OpenStreetMap (abbreviated OSM) is a free, open map database updated and maintained by a community of volunteers via open collaboration. [4] Contributors collect data from surveys, trace from aerial photo imagery or satellite imagery, and import from other freely licensed geodata sources.