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  2. Lot and block survey system - Wikipedia

    en.wikipedia.org/wiki/Lot_and_block_survey_system

    A contemporary plat map used in the lot and block system. The lot and block survey system is a method used in the United States and Canada to locate and identify land, particularly for lots in densely populated metropolitan areas, suburban areas and exurbs. It is sometimes referred to as the recorded plat survey system or the recorded map ...

  3. mmap - Wikipedia

    en.wikipedia.org/wiki/Mmap

    The main difference between System V shared memory (shmem) and memory mapped I/O (mmap) is that System V shared memory is persistent: unless explicitly removed by a process, it is kept in memory and remains available until the system is shut down. mmap'd memory is not persistent between application executions (unless it is backed by a file).

  4. Cadastral surveying - Wikipedia

    en.wikipedia.org/wiki/Cadastral_surveying

    Cadastral surveying is the sub-field of cadastre and surveying that specialises in the establishment and re-establishment of real property boundaries. It involves the physical delineation of property boundaries and determination of dimensions, areas and certain rights associated with properties.

  5. 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 ...

  6. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.

  7. Cadastre - Wikipedia

    en.wikipedia.org/wiki/Cadastre

    A cadastre or cadaster is a comprehensive recording of the real estate or real property's metes-and-bounds of a country. [ 1 ] [ 2 ] Often it is represented graphically in a cadastral map . In most countries, legal systems have developed around the original administrative systems and use the cadastre to define the dimensions and location of ...

  8. AM/FM/GIS - Wikipedia

    en.wikipedia.org/wiki/AM/FM/GIS

    AM/FM/GIS stands for Automated Mapping (AM), Facilities Management (FM), and Geographic Information Systems (GIS). It is a subset of GIS associated with public utilities like gas, electric, water and telecommunications.

  9. Section (United States land surveying) - Wikipedia

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

    This system was of great practical value on the American frontier, where surveyors often had a shaky grasp of mathematics and were required to work quickly. [2] A description of a quarter-quarter section in standard abbreviated form, might look like "NW 1/4, NE 1/4, Sec. 34, T.3S, R.1W, 1st P.M." or, alternatively, "34-3-1 NW4NE4 1PM".