Questions tagged [spatial-cluster]

Use this tag when referring to spatial clustering in GIS.

17 questions with no upvoted or accepted answers
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Clustering of events within a space-time window (R)

I am relatively new to clustering methods and am trying to determine the best method for clustering (or merely grouping) events that fall within a space-time window using preferably R. My goal is to ...
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59 views

Clustering based on eqaul populations

I have a map of a city that is divided into 65 sectors (building lots in purple, sector boundaries in red): In my shapefile of building lots, I have an attribute that is the total population within ...
3
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0answers
172 views

Find number of weighted point clusters & centre of clusters

I have a points layer with a frequency field indicating a population at that point. There is also a field indicating the broader area by which I need to analysis broken down into. I am expecting the ...
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0answers
387 views

PostGIS - Dynamic Server-Side Clustering based on Zoom level

I'm working on a Ruby on Rails application that is showing road signs on the map(leaflet). So, user can browse map and road signs, great. But, if there are a lot of signs and user wants to zoom out, ...
2
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0answers
95 views

GIS Clustering with drawing predefined square area around points as cluster boundaries

I have a layer of points and I would like to create clusters where a predefined square area of 5km by 5km is the boundary for the cluster. Is there a way to iteratively draw square polygons around ...
2
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1answer
163 views

Cluster analysis for different plant species with elevation, aspect, slope rasters using ArcGIS Desktop?

I am using ArcGIS Desktop. I have a point shapefile for 5 different plant species and rasters (elevation, slope, aspect, canopy height). I am trying to find clusters for each species in terms of ...
2
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0answers
3k views

Clustering latitude longitude data based on distance

I have a large dataset of latitude and longitude. I want to cluster the data into groups based on distance such that the distance between two points in a cluster is not greater than a minimum ...
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0answers
20 views

Defining Parameters using Spatially Constrained Multivariate Clustering of ArcGIS Pro

I have a point shapefile with 51673 features. I am trying to cluster them using the Spatially Constrained Multivariate Clustering tool in ArcGIS Pro. After reading through the documentation, I'm ...
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74 views

Is there an equivalent to “Build Balanced Zones” from ArcGIS Pro in QGIS?

"Build Balances Zones" was introduced in ArcGIS Pro 2.4 and allows a kind of spatial clustering with the help of genetic growth algorithm: The Build Balanced Zones tool uses a genetic algorithm to ...
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0answers
137 views

Cluster LineStrings using HDBSCAN?

I am trying to cluster a set of LineStrings (made out of lat/lon Points) with the help of HDBSCAN (using the "haversine" metric). The objective is to define the most "usual" path. I have only managed ...
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0answers
41 views

Find cluster of points within a 14K dataset which are laying within a circle of a certain radius

I have a dataset of geolocated points, which are dispersed over a large area I need to find clusters of a minimum number of X points within these sets which are laying within a circle of which the ...
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18 views

Clustering markers on a map ON THE SERVER SIDE with Java and MapTiler Cloud?

How can I cluster map markers on the (Java) server side of my website? I am planning to use Leaflet.js with Open Street Map data and OpenMapTiles (MapTiler Cloud - https://www.maptiler.com/cloud/) ...
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0answers
44 views

Point patterns clustering around reference points?

I have two point shapefiles. I want to analyse whether the points in the dataset A are clustering around their respective reference point in the dataset B. Each reference point in the dataset B has a ...
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22 views

What is the underlying algorithm of sdo_sam.spatial_clusters in Oracle?

Oracle has a "sdo_sam.spatial_clusters" function for spatial clustering. What is its underlying algorithm? Unfortunately the Oracle docs do not mention the algorithm or describe in which way the ...
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67 views

How to do cluster analysis for trajectories in ArcMap 10?

I have an air trajectory shapefile (lines shapefile). I would like to do a cluster analysis to see the 3 main cluster for these trajectories in ArcMap 10. This picture is an example of what I desire.
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1answer
78 views

Point Similarity Clustering

I am new to geographical statistics so please pardon this question if it is a duplicate. I would like to test if points that are similar are more or less likely to be near each other. I am latitude ...
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161 views

Is Spatial clustering with PostGIS possible to generate N number of groups that have 10 elements?

I need to create a query using some sort of spatial clustering algorithm within PostGIS database. Currently, I am using pgAdmin version 4. More specifically, I need to create N number of groups that ...