Preview

qwerty

Good Essays
Open Document
Open Document
712 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
qwerty
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.[1] In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such asmean sea level.[2] A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes.[3] The contour interval of a contour map is the difference in elevation between successive contour lines.[4]
More generally, a contour line for a function of two variables is a curve connecting points where the function has the same particular value. 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 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 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.[5]
Index Contour Lines
Index contour lines stand out the most on a topographical map, as they are the boldest lines on the page. They are designed to stand out like this, as they represent the major intervals of elevation on the map. They form what often

You May Also Find These Documents Helpful

  • Good Essays

    Qwerty

    • 535 Words
    • 3 Pages

    In this experiment the hardness of water was checked due to the presence of calcium and magnesium ions. These ions do not pose any…

    • 535 Words
    • 3 Pages
    Good Essays
  • Better Essays

    References: Murck, B., Skinner, B., & Mackenzie, D. (2010). Visualizing Geology (2nd ed., pp. 212-243). Hoboken, NJ: Wiley.…

    • 1072 Words
    • 5 Pages
    Better Essays
  • Satisfactory Essays

    Lab 9 Topographic Map

    • 455 Words
    • 2 Pages

    9. Index contours – thicker contour lines labeled with numbers to show the rising or decreasing elevation on a topographic map…

    • 455 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Be able to define and identify map features such as contour lines, index contours, etc.…

    • 505 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Dingo Bone Structure

    • 1145 Words
    • 5 Pages

    1. fossil record/genetic record: The two species that are completely different from the African Wild Dog are the Dingo and the Red Wolf. The first difference from the African Wild Dog, is that their scientific names are different. The second difference is that the African Wild Dog has a smaller body, fewer toes, and teeth structure in the jaw.…

    • 1145 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Canaletto uses line to show the audience the boundaries in his art. He uses line to differentiate parts of the building. Canaletto’s use of line also creates a boundary between the building and its surroundings. He uses line to show us where the buildings end and the gray sky begins. We all know the building and sky are not joined as one object but his outline of the building shows definition between the two. Just like in the photograph, there is some degree of definition between the building and sky. Canaletto’s work, however, does not hold the same vibrancy as the modern photograph so he needed to accentuate boundaries more instead of just having an implied boundary.…

    • 573 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The initial maps centuries ago were scraped into dirt or sculpt on stones. Furthermore, as time developed,…

    • 300 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Cartesian Graph

    • 338 Words
    • 2 Pages

    Imagine that a line on a Cartesian graph is approximately the distance y in feet a person walks in x hours. What does the slope of this line represent? How is this graph useful? Provide another example for your colleagues to explain.…

    • 338 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    f. One or more series of points connected by a line or lines to represent trends in time…

    • 460 Words
    • 2 Pages
    Good Essays
  • Good Essays

    A general point P can reached by traveling a distance x along a line O-X, and then a distance y along a line parallel to O-Y. O-X is called the x-axis, O-Y the y-axis, and the point P is said to have Cartesian coordinates (x, y). In the coordinate system shown, as is indicated in the diagram, the x-coordinate is positive for points above the right of the y-axis and negative for points to the left of this axis. The y-coordinate is positive for points above the x- axis and negative points below it. The coordinates of the origin are (0,…

    • 669 Words
    • 3 Pages
    Good Essays
  • Good Essays

    • Large Scale Map – maps that show a large amount of detail in a small area…

    • 2349 Words
    • 10 Pages
    Good Essays
  • Satisfactory Essays

    Qwerty

    • 529 Words
    • 3 Pages

    Believing her father would not show up to her valedictorian award, she had to tell the principle, whom her parents were to sit next to at dinner, that he wasn’t attending. Finally when he did show up, he was intoxicated once again, and embarrassed her further. This is one example of what caused all the insecurities that Crozier had to endure while going through life.…

    • 529 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    and corner points. Lines are invisible or distinctive such as a tree line creek or even a fence that…

    • 592 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    qwerty

    • 1561 Words
    • 7 Pages

    Visitors who need to enter the school need to sign in and get a visitor pass.…

    • 1561 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    Pre-Ib Geography Exam Review

    • 3880 Words
    • 16 Pages

    * Steep areas – very close contour lines, gentle areas – very wide contour lines…

    • 3880 Words
    • 16 Pages
    Good Essays

Related Topics