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Point Pattern

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 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?		 Open
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:

  • if generating random locations to the rectangular area containing Estonia, and
  • if random locations fall only to Estonian land surface.

2. How do you explain the difference in these distributions?
 Open
4148 2 The attached file contains L-Est coordinates of a set of Estonian meteorological stations. These should form more or less regular or random pattern to represent Estonian territory.
  1. In which regions is the clustering of stations within 25 km statistically significant (p<0,05)?
  2. Which region is largest not represented area in these data?
Add the map or maps you used to draw the conclusions.
 Open