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  2. Vector overlay - Wikipedia

    en.wikipedia.org/wiki/Vector_overlay

    Clip (ArcGIS, QGIS, GRASS, Manifold; Extract Inside in TNTmips): The result includes the portions of polygons of one layer where they intersect the other layer. The outline is the same as the intersection, but the interior only includes the polygons of one layer rather than computing the LCGUs. Non-commutative, non-associative

  3. Buffer analysis - Wikipedia

    en.wikipedia.org/wiki/Buffer_analysis

    In geographic information systems (GIS) and spatial analysis, buffer analysis is the determination of a zone around a geographic feature containing locations that are within a specified distance of that feature, the buffer zone (or just buffer). [1] A buffer is likely the most commonly used tool within the proximity analysis methods. [2]

  4. Sliver polygon - Wikipedia

    en.wikipedia.org/wiki/Sliver_polygon

    In addition, many systems have tracing tools, so that newly digitized lines can exactly follow existing lines. During the overlay process, the preferred mode of sliver polygon prevention is the use of a fuzzy tolerance, which is sometimes called a "xy tolerance" (ArcGIS) or "snapping threshold" (GRASS), and was originally called an "epsilon ...

  5. Proximity analysis - Wikipedia

    en.wikipedia.org/wiki/Proximity_analysis

    Proximity analysis is a class of spatial analysis tools and algorithms that employ geographic distance as a central principle. [1] Distance is fundamental to geographic inquiry and spatial analysis, due to principles such as the friction of distance, Tobler's first law of geography, and Spatial autocorrelation, which are incorporated into analytical tools. [2]

  6. Weiler–Atherton clipping algorithm - Wikipedia

    en.wikipedia.org/wiki/Weiler–Atherton_clipping...

    Candidate polygons should not be self-intersecting (i.e., re-entrant). The algorithm can support holes (as counter-clockwise polygons wholly inside their parent polygon), but requires additional algorithms to decide which polygons are holes, after which merging of the polygons can be performed using a variant of the algorithm.

  7. ArcGIS - Wikipedia

    en.wikipedia.org/wiki/ArcGIS

    With the release of ArcGIS Pro 3.0 in June, 2022 all *.aprx project files can be read by version 3.0; however, if the project is saved it will render the project file to be incompatible with version 2.9.x and earlier. [58] ArcGIS Pro 1.0 was released in January 2015. [59] ArcGIS Pro 2.6 was released in July 2020. [60] Noted features added ...

  8. Z-buffering - Wikipedia

    en.wikipedia.org/wiki/Z-buffering

    A depth buffer, also known as a z-buffer, is a type of data buffer used in computer graphics to represent depth information of objects in 3D space from a particular perspective. The depth is stored as a height map of the scene, the values representing a distance to camera, with 0 being the closest.

  9. MapInfo Pro - Wikipedia

    en.wikipedia.org/wiki/MapInfo_Pro

    MapInfo Pro is a database which manages information as a system of Tables. Each table is either a map file (graph) or a database file (text) and is denoted the file extension .TAB. Objects (points, lines, polygons) can be enhanced to highlight specific variations on a theme through the creation of a Thematic map. The basic data is overlaid with ...

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