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  2. Public Land Survey System - Wikipedia

    en.wikipedia.org/wiki/Public_Land_Survey_System

    The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling. Also known as the Rectangular Survey System, it was created by the Land Ordinance of 1785 to survey land ceded to the United States by the Treaty of Paris in 1783, following the end of the ...

  3. Baseline (surveying) - Wikipedia

    en.wikipedia.org/wiki/Baseline_(surveying)

    In surveying, a baseline is generally a line between two points on the Earth's surface and the direction and/or distance between them. In a triangulation network, at least one distance between two stations needs to be measured to calculate the size of the triangles by trigonometry. In relative Global Navigation Satellite System (GNSS) surveying ...

  4. Map Overlay and Statistical System - Wikipedia

    en.wikipedia.org/wiki/Map_Overlay_and...

    mossgis.org, www.osgeo.org /projects /moss /. The Map Overlay and Statistical System (MOSS), is a GIS software technology. Development of MOSS began in late 1977 and was first deployed for use in 1979. MOSS represents a very early public domain, open source GIS development - predating the better known GRASS by 5 years.

  5. Generic Mapping Tools - Wikipedia

    en.wikipedia.org/wiki/Generic_Mapping_Tools

    Generic Mapping Tools. Generic Mapping Tools (GMT) are an open-source collection of computer software tools for processing and displaying xy and xyz datasets, including rasterization, filtering and other image processing operations, and various kinds of map projections. The software stores 2-D grids as COARDS-compliant netCDF files and comes ...

  6. Section (United States land surveying) - Wikipedia

    en.wikipedia.org/wiki/Section_(United_States...

    The primary grid pattern is of quarter sections (1⁄2 mi × 1⁄2 mi (800 m × 800 m)). In U.S. land surveying under the Public Land Survey System (PLSS), a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid. [1]

  7. Comparison of free off-line satellite navigation software

    en.wikipedia.org/wiki/Comparison_of_free_off...

    Comparison of free off-line satellite navigation software. This article contains a list with gratis (but not necessarily open source) satellite navigation (or "GPS") software for a range of devices (PC, laptop, tablet PC, mobile phone, handheld PC (Pocket PC, Palm)). Some of the free software mentioned here does not have detailed maps (or maps ...

  8. Principal meridian - Wikipedia

    en.wikipedia.org/wiki/Principal_meridian

    This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS. In the United States Public Land Survey System , a principal meridian is the principal north–south line used for survey control in a large region, and which divides townships between east and west.

  9. Computer cartography - Wikipedia

    en.wikipedia.org/wiki/Computer_cartography

    Computer cartography (also called digital cartography) is the art, science, and technology of making and using maps with a computer. [1][2][3] This technology represents a paradigm shift in how maps are produced, but is still fundamentally a subset of traditional cartography. [3][4] The primary function of this technology is to produce maps ...

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