A contour line is a line which defines a form or an edge. It is, essentially, the outline or silhouette of a given object or figure. Additionally, contour lines can be used to show any dramatic changes of plane within the object or form (like the inner seams within the structure of a shoe, for example).
A contour line (also isoline, isopleth, 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.
Topographic maps also have a vertical scale to allow the determination of a point in three dimensional space. Contour Lines: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in feet, or meters, above sea level).
There are 3 kinds of contour lines you'll see on a map: intermediate, index, and supplementary.
The thin brown lines snaking around a topographic map are called contour lines. All points along the same contour line are at the same elevation above sea level.
Other characteristics of contour lines are:
- Uniform slopes have uniformly spaced lines. - Along plane surfaces, contour lines are straight and parallel. - Contour lines are perpendicular to lines of steepest slopes. - For summits or depressions, contour lines most close upon themselves.
I believe it is unique as to how much that one painting was able to bring in, It is abstract, and very enthusiastic in what and how it looks. It shows feeling and emotion in how the artist painted. That is my personally opinion on it.