index contour
•Contour Line: locus of points with constant elevation. •Dense information along the contour line. •Hardly any information across the contour line.
1) DEM (Digital Elevation Model)This is a shaded image where each shade from white to black (for example) represents a certain elevation. Contour lines can be determined and overlayed on top of the DEM though the use GIS software.2) Topographic MapThis is a type of map that displays contour lines, the spacing of which denotes slope. Every 5th contour line is numbered with the elevation along that line.
A contour line is simply a line drawn on a map to show land the same elevation (height above sea level). The British Ordinance Survey maps, for example, typically use brown lines to shown land at 50 metre intervals. If you walked along a contour line, you would be walking on entirely flat ground, neither rising or falling. Where the contour lines on a map are close together, it means that the land rises or falls sharply, as on the side of hills, etc. You can see an image of contour lines on images.google.com - search "contour lines".
Contour farming
The elevation of U.S. states may be described in several ways.
The numbers of contour lines indicate altitude or elevation along that line.
The numerical values along the lines of contour, indicate the elevation above or below sea level.
All of the points along the line are the same elevation. The answer he wants is for novanet..meaning this answer is irrelevant Dx
•Contour Line: locus of points with constant elevation. •Dense information along the contour line. •Hardly any information across the contour line.
. Lay a strip of paper along a line across the area where the profile is to be constructed.b. Mark on the paper the exact place where each contour, stream and hill top crosses the profile line.c. Label each mark with the elevation of the contour it represents.d. Prepare a vertical scale on profile paper by labeling the horizontal lines corresponding to the elevation of each index contour line.e. Place the paper with the labeled contour lines at the bottom of the profile paper and project each contour to the horizontal line of the same elevation.f. Connect the points.
A contour line (also isoline or isarithm) of a function of two variables is a curve along which the function has a constant 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
Both isobars as contour lines connect points on a map along which values of a given parameter are equal. Contour lines connect points of equal elevation while isobars connect points of equal pressure.
Each contour line represents a certain elevation, and the difference in elevation between any two adjacent countour lines is constant. So, for example, if in the map area there were a cone-shaped feature, like a volcano, the shape would be shown as a circle in a circle in a circle in a circle (and so on). The more contour lines you cross along a path, the steeper the climb, and the fewer contour lines you cross on the path, the more level it is.
1) DEM (Digital Elevation Model)This is a shaded image where each shade from white to black (for example) represents a certain elevation. Contour lines can be determined and overlayed on top of the DEM though the use GIS software.2) Topographic MapThis is a type of map that displays contour lines, the spacing of which denotes slope. Every 5th contour line is numbered with the elevation along that line.
Acontour line (also level set, isopleth, isoline, isogram 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 as mean 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] A contour interval is basically the same thing.
DTM = Digital Terrain Model is a digital representation of the sloped contour surface of the earth. Surface features, such as man-made objects and vegetation, are not included. DEM = Digital Elevation Model is a digital representation of the sloped contour surface of the earth. Elevation data is included, along with surface features such as man-made objects and vegetation.
A contour line is simply a line drawn on a map to show land the same elevation (height above sea level). The British Ordinance Survey maps, for example, typically use brown lines to shown land at 50 metre intervals. If you walked along a contour line, you would be walking on entirely flat ground, neither rising or falling. Where the contour lines on a map are close together, it means that the land rises or falls sharply, as on the side of hills, etc. You can see an image of contour lines on images.google.com - search "contour lines".