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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.

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39 views

Loading points and polylines into PostGIS database and creating connectivity between them using topology?

I am new in PostGIS, and I am trying to create connectivity(using topology) between 3 sets of points and polyline to model an electrical distribution network. Does anyone know how to do this?
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566 views

Empirical Bayesian kriging - does data need to be normal?

With empirical Bayesian kriging (ebk), does the data need to be normally distributed? If I apply a normal score transformation, my data is still not normal. Is ebk kriging thus an invalid ...
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0answers
84 views

Redistribution of polygons: supplementing and filling the specific area with polygons with specific size

I'm studying the impact of green wedges (red outline on the figure) on weather parameters in Copenhagen area. What I want to do is check how spatial redistribution of future afforested areas enacted ...
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0answers
75 views

Distribute population to health facilities (GP Practices)

I have been using GIS (ArcGis) for some years but I do not consider myself an expert. I am performing some analysis around GP Practices in London (UK), I would like to be able to estimate the ...
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0answers
32 views

Underlying distribution of points in an ellipse

I'm attempting to generate both a uniform distribution and a normal distribution of points that fall within an ellipse shape, made from a centre point, semi major and minor and rotation in degrees. I ...
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0answers
80 views

Uniformly distribute spatial points over a given extent R

Within a shapefile I am given an integer attribute that indicates the number of points that will need to be evenly (uniformly) distributed over the associated polygons extent. These spatial points ...
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0answers
53 views

Compare distributions of point patterns for significant differences in clustering

My problem is I have tens of thousands of points (GPS) representing animal locations over a period of several months. I want to test if a portion of those points (only about a few hundred) which ...
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0answers
92 views

Maxent Probabilities Values

I am working on my first experiment with Maxent. I am using two different species. When I receive the output map and look at it in QGIS the values for suitable habitat probability do not sum to 1. ...
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23 views

Distributing object distance using ArcGIS Pro?

Is there any tool in ArcGIS Pro, which could help me arrange objects to my desired distance? As an example, to see you what I am trying to achieve. ( in example objects are in chaotic distances)
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28 views

Method to spatially analyse and compare sets of points with eachother

I have 3 sets of points represented by the image below (3 different shapefiles). Each point has a coordinate. All points represent the same type of real world feature (veterinary surgeries) Using ...
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303 views

Distribution of POI query result

There are a lot of POIS in the database with fileds id name address lon lat. When we tried to query some points for a given bounding box, it is simple to build the accordingly sql and get the results,...