Questions tagged [clustering]

Question 1

Is it possible with Orfeo to perform a clustering segmentation base method ? As far as i understood, with orfeo, we can perform several methods : region, edge, threshold (Mean shift), Connected ...

Question 2

I would like to create clusters of line data (geometry) for sampling, the geometry would be connected within each cluster. So far I’ve thought of: Create a bounding polygon > split it into X ...

Question 3

At QGIS 3.40.4, I have a point layer containing 1,000+ records, shown here: I need to 1) identify where those points are clustered, and then 2) create an output point layer containing the centroid of ...

Question 4

I am using QGIS and I have a cluster of say 1000 points. I want to cluster these points such that all points which are within 200 m of each other will be part of the cluster but with the constraints ...

Question 5

This earlier post was really helpful: Cluster symbol color based on categorised variables But I would have an additional requirement: If the points are from mixed classes then @cluster_color will be ...

Question 6

I have more than 10,000 points in one layer. All these points have a set of fields, one of which is "Item", which contains the object's name, for example (tree names like OAK, Maple, Apple, ...

Question 7

I want to cluster a point layer so that the internal sum of a numeric column (in this case, 'ebw_totale') within each cluster does not exceed 220. How can I do this with the modeler in QGIS?

Question 8

I am attempting to write a function which will use PostGIS to group geometric points based off the bounding box passed to the function. I created the following table: CREATE TABLE items ( id ...

Question 9

I've configured cluster symbols for point features, utilizing the "Assistant" sizing method linked to a specific attribute. However, when multiple features form a cluster, the symbol size is ...

Question 10

I have an interactive map made with Leaflet. The principle is as follows: I have a filter box that should allow me to filter the map by feature. With checkboxes, it works, but as soon as I replace &...

Question 11

I want each cluster to have 25 items, the final cluster which has the leftover points can have less than 25 items. I have tried the following (where 75,000 m is an arbitrarily large distance): -- ...

Question 12

I have a map project made on MaplibreGl. It's a map with a list on the left, as in the mapbox example, clusters, and a filter based on radio buttons. In this project, I'd like to be able to color ...

Question 13

Here is my code: -- By area id with nta_clusters as ( select *, ST_ClusterKMeans(st_transform("centerPoint",24313), 1 ,5000) OVER (partition by "areaID" order by "ID")...

Question 14

Searching for point density yields several threads on this website but none shed light on the problem I want to tackle. So, here goes… I have a decent number of points, about ~500K, that I would like ...

Question 15

I am using QGIS to map animal counts on farms in the Midwest US and using a circle polygon to show where there are more than 30,000 animals between all the farms in that specific area. Each data point ...

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Questions tagged [clustering]

Orfeo toolbox : how to perform one clustering (kmeans) segmentation?

Cluster sampling of line data

Creating point cluster centroids in QGIS

Clustering of points within distance & criteria of max number of points within cluster & max cluster size

Cluster symbol color based on most frequently occuring class

Clustering layer with points representing trees in QGIS

Create area clusters in QGIS based on the sum of a field using the modeler

PostGIS Clustering Issue

Size problem in QGIS clustering

Filter clustered marker display using radio buttons in Leaflet

Clustering based on exact number of items per group

Changing color of clusters based on feature value in MapBox or MapLibreGL [closed]

ST_ClusterKMeans followed by Convex Hull gives overwhelmingly overlapped polygons

Point density at different zooms in Leaflet?

Grouping data points based on proximity and minimal count of attribute in QGIS

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