What is a index contour line

Contour interval note. b. Find the numbered index contour line nearest the point of which you are trying to determine the elevation (Figure 10-3).

At every fourth or fifth contour line, the line is printed heavier, and labeled with the elevation. These reference lines are called index contours and help to indicate  Index. Starting at zero elevation or mean sea level, every fifth contour line is a heavier line. These are known as index contour lines. Typically, each index  Contours: Ninety percent (90%) of all contour lines shall be correctly plotted to M) between intermediate contours and 5 meters (5 M) between index contours. Contours_2meter_SLCounty tile index can be used to determine the boundaries of contour line data in Salt Lake County, UT. These contours were derived from  As regular hill visitors, we know that contour lines are used to illustrate a 50m there is a darker and thicker line shown, which is what we call an INDEX contour.

Contours: Ninety percent (90%) of all contour lines shall be correctly plotted to M) between intermediate contours and 5 meters (5 M) between index contours.

A contour line of a function of two variables is a curve along which the function has a constant Retrieved from "https://en.wikipedia.org/w/index.php?title= Contour_line&oldid=939016155". Categories: Cartography · Curves · Multivariable  返回到列表. 计曲线. index-contour-line. 地形图上比其他线粗一些的等值线,通常用 其所表示的高度来标注。 根据等值线间距,每4 条或5 条等值线可能是一个计曲线。 A contour line accentuated by a heavier line weight to distinguish it from intermediate contour lines. Index contours are usually shown as every fifth contour with  Index contours are bold or thicker lines that appear at every fifth contour line. image of topographic map. If the numbers associated with specific contour lines are  1. Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level. Index contours are shown by darker brown lines on the map. These are the contour lines that are usually labeled. The example at right is a section of a topographic 

The thick lines are known as "index lines" and are labeled with a number revealing the elevation. The thinner, unmarked contour lines between the index lines are called "interval lines." Use the elevation marked on index lines to calculate the elevation of interval lines.

1. Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level. Index contours are shown by darker brown lines on the map. These are the contour lines that are usually labeled. The example at right is a section of a topographic  Such lines are called index contour lines. They are usually labeled with their corresponding elevations. Contour lines (thinner lines) between index contours are  Contours, An index contour line is thicker than other contour lines and labeled with the elevation that it represents in 10 ft intervals. Every fifth contour line in this  

Intermediate Contour Line. The contour lines falling between index contours are called intermediate contours. They are drawn with a finer line than the index 

distance between contours, generally. 10ft. on topo maps. Contour lines never cross each other. • Every fifth contour line is an index contour and is usually  Contour lines, or lines which connect points of equal elevation, are drawn on a Index contours are spaced at regular intervals and are useful in visualy  Index contour lines: Every fifth contour line is a thicker, “index” line. At some point along that line, its exact elevation is listed. Contour interval: The change in  contour lines are generated, you will learn how to build an index and symbolize the lines appropriately. What are contour lines? Contour lines are vector features  

index contour line A contour line accentuated by a heavier line weight to distinguish it from intermediate contour lines. Index contours are usually shown as every fifth contour with their assigned values, to facilitate reading elevations.

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At every fourth or fifth contour line, the line is printed heavier, and labeled with the elevation. These reference lines are called index contours and help to indicate  Index. Starting at zero elevation or mean sea level, every fifth contour line is a heavier line. These are known as index contour lines. Typically, each index  Contours: Ninety percent (90%) of all contour lines shall be correctly plotted to M) between intermediate contours and 5 meters (5 M) between index contours. Contours_2meter_SLCounty tile index can be used to determine the boundaries of contour line data in Salt Lake County, UT. These contours were derived from  As regular hill visitors, we know that contour lines are used to illustrate a 50m there is a darker and thicker line shown, which is what we call an INDEX contour. To determine the contour interval of a point, you must have a reference line from which to start. This reference line is an index contour (major contour line). How many lines are there between the two index contours? [There are 5 contour lines between index contours.] –. A contour interval is the vertical distance