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What is the function of index contours?

Updated: 9/16/2023
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Q: What is the function of index contours?
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Related questions

How can index contours be identified?

Index contours can be identified by every 5th contour line and also because its darker and heavier


What is labeled with the elevation in round units?

Index Contours


What is labeled with the elevation in round units on a topography map?

I think it's an index contour, but I'm not sure.


Specially drawn contour lines used to represent a round number of feet or meters?

Index contours


How far apart would two successive index contours be on a map with a contour interval of 5 meters?

Two successive index contours on a map would be 5 meters apart. The interval is how far apart two contour lines are, so since the contour interval is 5 meters the answer is 5 meters.


How do index contours let you know if the land you are viewing are increasing or decreasing?

Each index contour has an elevation associated with it. When you look at 2 contours, one will have a higher corresponding elevation. As you go from the lower elevation to the higher elevation, you know that the land is increasing in the direction toward the higher elevation. From the higher to the lower elevation, the land is decreasing (sloping downward, decreasing in elevation).


How would you prove that there are no closed contours in the contour plot of a harmonic function?

This is not exactly true as a constant function is harmonic and has closed contours as its contour plot (i.e. the entire plane is closed). However, any function that has closed contours can be shown to be the constant function. Here is how. If, say u, is a harmonic function which is constant on a contour which is closed, then the inside of that contour is a domain (simply connected set if that has any meaning to you). By the maximum and minimum principles respectively, the function u must attain both its max and min on the boundary i.e. the contour. This number is a constant and since the maximum is the same as the minimum we can conclude that the entire function is constant on the insides of the contour. From there we can extend this function to the entire plane by identity principle.


What is the function of a map index?

Alphabetical order


When did The Contours end?

The Contours ended in 1968.


When was The Contours created?

The Contours was created in 1959.


Why the array is starting from zero?

By design; it makes the compiler's work easier. 1-based array's addressing-function: Address (array, index) = Address (array) + (index-1)*Elemsize(array) 0-based array's addressing-function: Address (array, index) = Address (array) + index*Elemsize (array)


How do you use contours in a sentence?

The lines on a topographical map show the contours of the land.