Questions tagged [distribution]

The frequency or amount at which a thing or things occur within a given area or the set of probabilities that a variable will have a particular value.

4
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2answers
767 views

Creating n randomly distributed points within given (multi)polygon with PyQGIS?

Is there a way to create n randomly distributed point features within a given polygon using QGIS, PyQGIS and/or PostGIS? My first approach was to implement something like (fantasy language) n = 0 ...
4
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1answer
473 views

Simple way to compare ranges and distributions of species, looking for correlation and differences between ranges

As a biology student just beginning with GIS, wondered if someone could give me an idea of what tools to go about using to compare the range of 3 species that have trophic effects on one another. I ...
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2answers
67 views

Evenly assigning attributes to layer of points using ArcGIS Desktop?

I have a layer of point features at fixed locations. One of the fields in my attribute table has two possible values (lets say they are "a" and "b"). How can I modify this attribute as needed in order ...
1
vote
2answers
4k views

Creating species distribution map?

I have to create some species distribution maps, but I have very little experience with ArcGIS unfortunately. I have two different kinds of excel sheets: 1. A version with many thousand X and Y ...