MultiTrace of Jensen Software Systems
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Miscellaneous
Estimation of the population of a colony
The program “ColonyPopulation” estimates the amount of animals of a colony. For that purpose the software requires this information:
1) The border of the colony as a polygon
2) Several density points inside the colony.
An – artificial - example for the content of a border file is
An – artificial - example for the content of a border file is
These are the latitudes and longitudes of several points at the colony border.
An example for the content of a density file is
The third line in this example means: At the location P=(52.135/59.138) there had been counted 6 animals in a circle of N meters radius around P. N is arbitrary but must be constant for all lines.
Then the program calculates
1) The size of the area of the colony
2) The population i.e. the amount of animals inside the colony.
and charts the colony
Fig 1. Displaying only the sampled density points.
Fig 2. After extrapolation of the density points
Radio Location
This program calculates the position of animals equipped with a VHF-transmiters by triangulation using angles which are simultaneously recorded by 2 tracking stations.
QuotDist
This program calculates the "Area Interest Index" of a routue of an animal. This index specifies the magnitude of meandering (or how straight-lined the route is). The program requires as an input file a text file that contains a route as co-ordinates.