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  2. ArcSDE - Wikipedia

    en.wikipedia.org/wiki/ArcSDE

    ArcSDE serves data for the advanced ArcGIS Desktop products (ArcView, ArcEditor and ArcInfo); the ArcGIS development products (ArcGIS Engine and ArcGIS Server), ArcView 3.x as well as ArcIMS. It is a key component in managing a multi-user Esri-based GIS .

  3. ArcGIS - Wikipedia

    en.wikipedia.org/wiki/ArcGIS

    ArcGIS is a family of client, server and online geographic information system (GIS) software developed and maintained by Esri. ArcGIS was first released in 1982 as ARC/INFO, a command line-based GIS. ARC/INFO was later merged into ArcGIS Desktop, which was eventually superseded by ArcGIS Pro in 2015. [8]

  4. Propagation of uncertainty - Wikipedia

    en.wikipedia.org/wiki/Propagation_of_uncertainty

    Any non-linear differentiable function, (,), of two variables, and , can be expanded as + +. If we take the variance on both sides and use the formula [11] for the variance of a linear combination of variables ⁡ (+) = ⁡ + ⁡ + ⁡ (,), then we obtain | | + | | +, where is the standard deviation of the function , is the standard deviation of , is the standard deviation of and = is the ...

  5. Help:Displaying a formula - Wikipedia

    en.wikipedia.org/wiki/Help:Displaying_a_formula

    Command names are terminated by a space, a number or any other "non-letter" character. They consist of a backslash \ and exactly one non-letter. Some commands need an argument, which has to be given between curly braces {} after the command name. Some commands support optional parameters, which are added after the command name in square ...

  6. Bessel's correction - Wikipedia

    en.wikipedia.org/wiki/Bessel's_correction

    The following statements explain the meaning of the remaining columns: The sum of the entries in the first column (a 2) is the sum of the squares of the distance from sample to sample mean; The sum of the entries in the last column (b 2) is the sum of squared distances between the measured sample mean and the correct population mean

  7. Regula falsi - Wikipedia

    en.wikipedia.org/wiki/Regula_falsi

    At iteration number k, the number c k is calculated as above and then, if f (a k) and f (c k) have the same sign, set a k + 1 = c k and b k + 1 = b k, otherwise set a k + 1 = a k and b k + 1 = c k. This process is repeated until the root is approximated sufficiently well.

  8. Well-known text representation of geometry - Wikipedia

    en.wikipedia.org/wiki/Well-known_text...

    Well-known text (WKT) is a text markup language for representing vector geometry objects. A binary equivalent, known as well-known binary (WKB), is used to transfer and store the same information in a more compact form convenient for computer processing but that is not human-readable.

  9. Georeferencing - Wikipedia

    en.wikipedia.org/wiki/Georeferencing

    Graphical view of the affine transformation. The registration of an image to a geographic space is essentially the transformation from an input coordinate system (the inherent coordinates of pixels in the images based on row and column number) to an output coordinate system, a spatial reference system of the user's choice, such as the geographic coordinate system or a particular Universal ...