Isohel

A contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function f ( x , y ) {\displaystyle f(x,y)} parallel to the ( x , y ) {\displaystyle (x,y)} -plane. More generally, a contour line for a function of two variables is a curve connecting points where the function has the same particular value. In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. 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. The contour interval of a contour map is the difference in elevation between successive contour lines. The gradient of the function is always perpendicular to the contour lines. When the lines are close together the magnitude of the gradient is large: the variation is steep. A level set is a generalization of a contour line for functions of any number of variables. Contour lines are curved, straight or a mixture of both lines on a map describing the intersection of a real or hypothetical surface with one or more horizontal planes. The configuration of these contours allows map readers to infer the relative gradient of a parameter and estimate that parameter at specific places. Contour lines may be either traced on a visible three-dimensional model of the surface, as when a photogrammetrist viewing a stereo-model plots elevation contours, or interpolated from the estimated surface elevations, as when a computer program threads contours through a network of observation points of area centroids. In the latter case, the method of interpolation affects the reliability of individual isolines and their portrayal of slope, pits and peaks.

Dark in Miami - 2025-06-06T00:00:00.000000Z

VIRTUAL EP - 2024-12-06T00:00:00.000000Z

My Room - 2024-11-15T00:00:00.000000Z

Stay Low - 2024-10-09T00:00:00.000000Z

it's always the same.. - 2024-03-22T00:00:00.000000Z

Are You With Me - 2023-10-27T00:00:00.000000Z

BAD VIBES - 2023-08-04T00:00:00.000000Z

Today We Grow - 2023-01-20T00:00:00.000000Z

Coping - 2022-09-30T00:00:00.000000Z

VIAPERLA - 2022-06-10T00:00:00.000000Z

Falling - 2022-05-06T00:00:00.000000Z

Blu Persiano - 2022-04-20T00:00:00.000000Z

Where Are You Now - 2022-02-25T00:00:00.000000Z

dreams - 2021-12-17T00:00:00.000000Z

Radar - 2021-10-29T00:00:00.000000Z

ocean - 2021-06-25T00:00:00.000000Z

Porpora - 2021-03-19T00:00:00.000000Z

Oh, That's Right.. - 2021-02-19T00:00:00.000000Z

weaksand - 2020-09-25T00:00:00.000000Z

Suis - 2020-08-14T00:00:00.000000Z

Fucked up. - 2020-04-20T00:00:00.000000Z

IX - 2020-02-21T00:00:00.000000Z

Before I become a ghost - 2020-02-14T00:00:00.000000Z

obsession. - 2019-11-02T00:00:00.000000Z

Not Alright - 2019-08-05T00:00:00.000000Z