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**Data**: Allikad.txt ### Instructions

## Exercise 3977. Points 1, theme: Point Pattern |
Open exercise |

Find the Lambert-Est XY coordinates of springs from the Estonian topographical database in the attached file.

What is the most frequent distance from a spring to the nearest other spring given the nearest neighbour distances are divided into 10 m distance intervals?

What is the most frequent distance from a spring to the nearest other spring given the nearest neighbour distances are divided into 10 m distance intervals?

This exercise can be solved using the NND function of the online calculator.

- Open the NND function and copy data to the input cell.
- Set distance interval to 10 (units are the same as for coordinates – meters in this case).
- Select a reasonable number of distance zones. The number of zones is set to 40 in the attached figure.
- Copy data from the attached file to the calculators input field. By the way,
*allikad*is plural from the Estonian word*allikas*meaning spring or source (but never the spring season). - Press
*Calculate*. - From the graph or from the table of results find the distance interval at which the number of NN distances is the largest. A distance interval is defined by the minimum and maximum distance.

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