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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. Data model (GIS) - Wikipedia

    en.wikipedia.org/wiki/Data_model_(GIS)

    Polygon: a region also includes an infinite number of points, so the vector model represents its boundary as a closed line (called a ring in OGC-SFA), allowing the software to interpolate the interior. GIS software distinguishes the interior and the exterior by requiring that the line be ordered counter-clockwise, so the interior is always on ...

  4. 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 ...

  5. ArcGIS Pro - Wikipedia

    en.wikipedia.org/wiki/ArcGIS_Pro

    ArcGIS Pro is desktop GIS software developed by Esri, which replaces their ArcMap software generation. [1] The product was announced as part of Esri's ArcGIS 10.3 release, [ 2 ] ArcGIS Pro is notable in having a 64 bit architecture, combined 2-D, 3-D support, ArcGIS Online integration and Python 3 support.

  6. Sliver polygon - Wikipedia

    en.wikipedia.org/wiki/Sliver_polygon

    Sliver polygons are typically created when polygons are automatically generated from lines that should be coincident (e.g., an international boundary following a river de jure, or two adjacent counties) but are not, due to the natural discrepancies that arise from manual or automated digitization. This can occur when a single layer is digitized ...

  7. Vatti clipping algorithm - Wikipedia

    en.wikipedia.org/wiki/Vatti_clipping_algorithm

    Clipping is defined as the interaction of subject and clip polygons. While clipping usually involves finding the intersections (regions of overlap) of subject and clip polygons, clipping algorithms can also be applied with other boolean clipping operations: difference, where the clipping polygons remove overlapping regions from the subject; union, where clipping returns the regions covered by ...

  8. Buffer analysis - Wikipedia

    en.wikipedia.org/wiki/Buffer_analysis

    Merge or dissolve the rectangles and circles into a single polygon. Software implementations of the buffer operation typically use alterations of this strategy to process more efficiently and accurately. In Mathematics, GIS Buffer operation is a Minkowski Sum (or difference) of a geometry and a disk. Other terms used: Offsetting a Polygon. [5]

  9. Weiler–Atherton clipping algorithm - Wikipedia

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

    Given polygon A as the clipping region and polygon B as the subject polygon to be clipped, the algorithm consists of the following steps: List the vertices of the clipping-region polygon A and those of the subject polygon B. Label the listed vertices of subject polygon B as either inside or outside of clipping region A.