Point patterns can be divided into single type patterns and multi type patterns. If the objects or point events belong to the same category, mainly tendences for aggregation or regularity are measured. Association or segregation of categories are the main issues for multi category point patterns. 
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ID  P  Question or exercise  

3977  1  Find the LambertEst 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? 
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4146  3  Find XY coordinates of springs from the Estonian topographical database in the attached file. 1. Which distances between them are more frequent than expected from random location and which are rarer? Give the answer for two cases:

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4148  2  The attached file contains LEst coordinates of a set of Estonian meteorological stations. These should form more or less regular or random pattern to represent Estonian territory.

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