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  2. Skew-T log-P diagram - Wikipedia

    en.wikipedia.org/wiki/Skew-T_log-P_diagram

    The major use for skew-T log-P diagrams is the plotting of radiosonde soundings, which give a vertical profile of the temperature and dew point temperature throughout the troposphere and lower stratosphere. The isopleths on the diagram can then be used to simplify many tedious calculations involved, which were previously performed by hand or ...

  3. Rotation of axes in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotation_of_axes_in_two...

    In the new coordinate system, the point P will appear to have been rotated in the opposite direction, that is, clockwise through the angle . A rotation of axes in more than two dimensions is defined similarly. [2] [3] A rotation of axes is a linear map [4] [5] and a rigid transformation.

  4. Abscissa and ordinate - Wikipedia

    en.wikipedia.org/wiki/Abscissa_and_ordinate

    More technically, the abscissa of a point is the signed measure of its projection on the primary axis. Its absolute value is the distance between the projection and the origin of the axis, and its sign is given by the location on the projection relative to the origin (before: negative; after: positive). Similarly, the ordinate of a point is the ...

  5. Lexis diagram - Wikipedia

    en.wikipedia.org/wiki/Lexis_diagram

    Lexis diagram showing the cohort of 2003-born persons in green, and the year 2005 in red. In demography, a Lexis diagram (named after economist and social scientist Wilhelm Lexis) is a two-dimensional diagram used to represent events (such as births or deaths) that occur to individuals belonging to different cohorts. Calendar time is usually ...

  6. Ternary plot - Wikipedia

    en.wikipedia.org/wiki/Ternary_plot

    A ternary flammability diagram, showing which mixtures of methane, oxygen gas, and inert nitrogen gas will burn. A ternary plot, ternary graph, triangle plot, simplex plot, or Gibbs triangle is a barycentric plot on three variables which sum to a constant. [1] It graphically depicts the ratios of the three variables as positions in an ...

  7. Poincaré plot - Wikipedia

    en.wikipedia.org/wiki/Poincaré_plot

    A Poincaré plot, named after Henri Poincaré, is a graphical representation used to visualize the relationship between consecutive data points in time series to detect patterns and irregularities in the time series, revealing information about the stability of dynamical systems, providing insights into periodic orbits, chaotic motions, and bifurcations.

  8. Pournelle chart - Wikipedia

    en.wikipedia.org/wiki/Pournelle_chart

    The x-axis, "Attitude toward the State" (labeled statism), refers to a political philosophy's attitude toward the state and centralized government. The furthest right is "state worship" and the furthest left represents the state as the "ultimate evil", preferring individual freedom .

  9. Decay scheme - Wikipedia

    en.wikipedia.org/wiki/Decay_scheme

    The decay scheme of a radioactive substance is a graphical presentation of all the transitions occurring in a decay, and of their relationships. Examples are shown below. It is useful to think of the decay scheme as placed in a coordinate system, where the vertical axis is energy, increasing from bottom to top, and the horizontal axis is the proton number, increasing from left to right.