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  2. Marching squares - Wikipedia

    en.wikipedia.org/wiki/Marching_squares

    Typical applications include the contour lines on topographic maps or the generation of isobars for weather maps. Marching squares takes a similar approach to the 3D marching cubes algorithm: Process each cell in the grid independently. Calculate a cell index using comparisons of the contour level(s) with the data values at the cell corners.

  3. Contour line - Wikipedia

    en.wikipedia.org/wiki/Contour_line

    A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. [4] The contour interval of a contour map is the difference in elevation between successive contour lines. [5] The gradient of the function is always perpendicular to the contour ...

  4. Level set - Wikipedia

    en.wikipedia.org/wiki/Level_set

    When the number of independent variables is two, a level set is called a level curve, also known as contour line or isoline; so a level curve is the set of all real-valued solutions of an equation in two variables x 1 and x 2.

  5. Contour integration - Wikipedia

    en.wikipedia.org/wiki/Contour_integration

    Contour integration is closely related to the calculus of residues, [4] a method of complex analysis. One use for contour integrals is the evaluation of integrals along the real line that are not readily found by using only real variable methods. [5] Contour integration methods include:

  6. Reservoir modeling - Wikipedia

    en.wikipedia.org/wiki/Reservoir_modeling

    Screenshot of a structure map generated by Contour map software for an 8500ft deep gas & Oil reservoir in the Erath field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a Fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines.

  7. Residue (complex analysis) - Wikipedia

    en.wikipedia.org/wiki/Residue_(complex_analysis)

    Then, the residue at the point c is calculated as: ⁡ (,) = = = = using the results from contour integral of a monomial for counter clockwise contour integral around a point c. Hence, if a Laurent series representation of a function exists around c, then its residue around c is known by the coefficient of the ( z − c ) − 1 {\displaystyle ...

  8. Geologic modelling - Wikipedia

    en.wikipedia.org/wiki/Geologic_modelling

    The thin red circular contour line in the middle of the map indicates the top of the oil reservoir. Because gas floats above oil, the thin red contour line marks the gas/oil contact zone. Geologic modelling, geological modelling or geomodelling is the applied science of creating computerized representations of portions of the Earth's crust ...

  9. 2.5D (machining) - Wikipedia

    en.wikipedia.org/wiki/2.5D_(machining)

    Objects of this type are often represented as a contour map that gives the height (i.e., thickness or depth) of the object at each point. [1] A 2.5D image is a simplified three-dimensional ((x, y, z) Cartesian coordinates system ) surface representation that contains at most one depth (z) value for every point in the (x, y) plane.