Partitioning data points into subsets of objects according to their mutual "similarity," without using preexisting knowledge such as class labels.

learn more… | top users | synonyms (1)

3
votes
1answer
265 views

Maximize clusters of points from coordinate data

So I am definitely new to the GIS world, so bear with me if I don't know the best way to articulate my problem. That said, I am ready to learn, I would definitely welcome any direction that you all ...
5
votes
0answers
61 views

Mapping methodology and/or clustering technique needed [on hold]

I have a scenario in which I have two service centers (A & B) in an area. The capacity of these service centers are different. Service Center A can serve twice as many as Service Center B. They ...
3
votes
1answer
252 views

Clusters of points: Determining the centroid (QGIS)

I've basically got the same issue as this post, but can't find a way to transplant the ArcGIS solution to QGIS. I have household-level geo data for 10 villages spread out across the country. I need ...
66
votes
5answers
23k views

Spatial clustering with PostGIS

I'm looking for spatial clustering algorithm for using it within PostGIS-enabled database for point features. I'm going to write plpgsql function that takes distance between points within the same ...
2
votes
1answer
39 views

Plotting points conditionally using cluster number in qgis

I have a set of locations such that there are partitioned into five clusters, I used the categorized property under styles to differentiate points belonging to different clusters using different ...
0
votes
0answers
76 views

Geohash vs. Open Location Code

The target is to find all POIs within a given location on a specific zoom level. If the zoom level is high, I just want to get a number of POIs and at a certain zoom level I want to get all POIs. ...
6
votes
2answers
238 views

How can I cluster all points in a postgis table together based on their distance from each other?

I have a PostGIS (in postgres 9.3) table which has Points. I want to figure out the "clusters" in the data. If 2 points are < X distance apart, they should be added to a cluster, and this should be ...
7
votes
0answers
701 views

Grouping analysis of points to divide polygon into n number of sub-regions using QGIS?

I'm attempting to create n sub-regions from a polygon based on a cluster analysis of a bunch of overlapping raster layers (physical layers, eg: depth, currents, waves). Briefly, I can create a ...
2
votes
0answers
32 views

Performing Grouping Analysis in QGIS? [duplicate]

Is there a QGIS tool that does the function of http://pro.arcgis.com/en/pro-app/tool-reference/spatial-statistics/grouping-analysis.htm MY NEED - I have about 15,000 points. I need them clustered in ...
0
votes
1answer
33 views

Call Toolbox operators of ENVI from IDL code

Is it possible to call the clustering/classification algorithms included in the toolbox of ENVI (gui) from IDL (source code) and how?
1
vote
1answer
130 views

How to Group or Cluster Points that are within 45 miles of each other? in ArcGIS?

I have a project in ArcGIS (ArcMap 10.2) where I want to identify naturally occurring dense spots of points and then form groups in that dense area, where points are within 45 miles of each other. ...
2
votes
2answers
2k views

zoom to cluster onClick & have hover event

I've made a simple mock-up trying to combine two openlayers examples. I want to have clusters on which I can hover (so I can display an infowindow about it's content) and I want users to be able to ...
1
vote
1answer
107 views

why doesn't show feature on map

this is fiddle Link.Feature doesn't show on map when it has been like this code : var featureVectorLayer = new ol.layer.Vector({ source: featureClusterSource, style: new ol.style.Style({ ...
0
votes
1answer
74 views

Leaflet markercluster plugin also showing unclustered points

The following code displays clusters correctly. However, it also displays all the points as well as the clusters, which I don't want. What have I done wrong? Apologies that I cannot simplify the ...
0
votes
0answers
19 views

Multiple Points CartoDB [duplicate]

I'm new to CartoDB. I would to map people using their addres, buy i have only the city where they live. In the maps there's multiple points overlapping. I would like to click on them and be able to ...
5
votes
1answer
188 views

Dividing polyline layer in clusters with specific requirements in ArcGIS for Desktop?

For my work in ArcGIS 10.2 for Desktop I need to divide line layers into clusters/groups. Currently I am doing this manually, but I like to automate this. The line layers can consist of 50 up to 2500 ...
1
vote
0answers
58 views

Spatial clustering gridded data with missing values (over water)

I'm trying to cluster a spatial dataset, and use the cluster labels as an input to a second process. I've been using the spdep package in R. I've got gridded data at .5 degree lat/lon resolution. ...
2
votes
1answer
105 views

Is it possible to show Leaflet Marker Cluster with JSON API?

I have a problem with displaying Leaflet Marker Cluster working with Leaflet-layerJSON. There are markers, but I cannot show the clusters. This works with GeoJSON, but now I have different data ...
3
votes
1answer
188 views

Geoserver Clustering. where can i find activemqBroker.war?

I am completely new to clustering setup and I am following this tutorial to setup geoserver cluster. But I am stuck at "HOWTO configure ActiveMQ broker" step, problem is i cannot find this ...
3
votes
2answers
2k views

Grouping points into user-provided number of clusters using ArcGIS for Desktop?

I am looking for a process in ArcGIS that takes a point feature class and groups the points into a user-provided number of clusters.
29
votes
5answers
9k views

Identifying clusters in vector point data using QGIS?

I have a vector dataset of rural broadband data-points (how fast, etc.) and I'd like to explore if there are clusters of points with similar characteristics, and to plot polygons encompassing them. ...
1
vote
0answers
23 views

CartoDB: Center and zoom to stacked layer items/clusters with setView?

Is there any way to setView on a location with several layer items on top of each other? Mapbox example: http://www.zeit.de/zeit-magazin/2015/16/regional-einkaufen-deutschlandkarte Google Maps ...
2
votes
1answer
67 views

Group by Location within N Meters in PostGis

In PostGIS, given several Location objects, each of which looks something like this: { :id => 1, :latitude => 32.4196, :ll_point => "(-10111.1877176122, -5384086.44077608, ...
1
vote
1answer
96 views

How to merge two point feature classes based on spatial location using ArcPy?

I have two point feature classes, each containing about fifty points. These 2 point feature classes should be merged, or the points of feature class 2 added to feature class 1, as feature class 2 does ...
4
votes
1answer
192 views

Clustering Technique?

I have the following 9 clusters (each colour represent the appropriate cluster): I am looking for a clustering algorithm (if any) that would achieve "realistic" results. The data represents ...
1
vote
0answers
77 views

Modifying Cluster Analysis script in ArcGIS.com Incident Analysis template to add dissolve for other fields?

I have fiddled around with some of my data, especially a high-count (> 50,000) point data set of business locations. In small scale I have successfully used ESRI's Incident Analysis to cluster these ...
2
votes
0answers
405 views

DBSCAN gives “AttributeError: NoneType has no attribute issparse”

I am running a Python script invoking the DBSCAN tool to cluster feature points. When I open ArcMap, load the feature layer, and run the script, it works the way I expect it to. But if I run it ...
1
vote
1answer
63 views

Problem replicating ArcGIS Grouping Analysis 'grouping effectiveness' statistic results

I posted this question over on Esri's GeoNet, but have not yet gotten an answer. Using ArcGIS v10.2.1, I have been using the Grouping Analysis tool to generate a range of clusters from my data. I ...
2
votes
0answers
125 views

How to Construct Spatio Temporal Clusters of Time Series Data in R

I have count data of one disease for various districts of a state of India on monthly basis. Is it possible to draw spatio temporal clusters in R? I have checked some R- packages for example ...
0
votes
1answer
22 views

Divide broken line layer in seperate clusters based on location

Building on a earlier asked question on this forum I would like to ask an additional question in getting the task done I asked here: Divide polyline layer in clusters with specific requirements in ...
0
votes
1answer
56 views

CartoDB - visualise multiple properties

Is there a clever way to visualise more than one property in a single map overlay? Ideally I would like to produce a dot grid map in which the size of the dot represents a scaled property and the ...
1
vote
1answer
424 views

Leaflet Marker Cluster: refreshCluster function issue

I am trying to use the markers.refreshClusters(); function to refresh the marker icons for a new styled icon I am trying to work with to highlight the selected cluster. Unfortunately, I keep getting ...
0
votes
0answers
64 views

Interpreting Statistical Analysis (Moran's I v High-Low)

I am currently examining the results of spatial statistics using Moran's I and High-Low clustering methods. I have used distance thresholds of 5 miles, 10 miles, and 15 miles for each. Moran's I ...
1
vote
1answer
381 views

Cluster numbering in openlayers

I am using openlayers 2 for making clustering on vector point data for which I am a beginner. I have installed geoserver locally via opengeo suite and using 'world_cities' dataset as an example. I ...
6
votes
1answer
372 views

Performing cluster analysis in R with Point Datasets

I am a R-Beginner, but I want to use it for some spatial statistics. I want to check the relation between the occurrence of ill persons and the existence of water in a area of interest. To give you a ...
1
vote
1answer
61 views

OpenLayers 3: Find biggest cluster

I might be able to work this out myself but I am in a bit of a deadline rush and thought about posting this here with the chance that somebody has dealt with a similar issue before. I am using ol....
6
votes
1answer
142 views

Segmentation of a big raster

I'm actually trying to convert one raster into a SpatialPolygons. I've got a big raster (12 millions pixels) with a lot of zeros, and some negative values (representing some depression in a DEM). I ...
1
vote
0answers
31 views

MarkerCluster Animation for OpenLayers2 with Lines

I would like to implement a MarkerCluster-Animation in OpenLayers2 but could need some advice where to start. If you have a look at this (OpenLayers2-)webpage: http://spielplatz-radar.de/#position/...
1
vote
0answers
28 views

Leaflet MarkerCluster plugin. Weighted Points

I have an huge amount of points I'd like to have on the map so instead of sending millions of points across I have grouped together points that are "close enough" to be the same point. So I have moved ...
1
vote
0answers
20 views

Metrics and features for comparison of aggregated trail dataset

I have hundreds GPS traces generated by cars for single road in the city from direction A to B. And I have hundreds of GPS traces generated by people which organized in trail in the mountain from ...
0
votes
1answer
122 views

How to Point Cluster With Dynamic Data In ArcGIS API

ArcGIS API is using this Demo to illustrate how Point clustering works with JSON data. In my case I am generating some point graphics from MySQL Database by a jQuery AJAX request like following code: ...
4
votes
2answers
242 views

Geoserver clustering

I am running into problems configuring the jms clustering of Geoserver. Here is the background: I have 4 virtualboxes, each running a Geoserver 2.7.1 with the jms-cluster extension. I would like to ...
1
vote
1answer
322 views

40k+ points from Shapefile, clustering them and populating on Google Maps/Webapp

I just started a new Python/Django webapp job related to GIS (and i'm totally new to GIS). Here is my task and what i have found so far, and i am stuck as to finding out what's the best way or the ...
2
votes
1answer
656 views

How to group points in QGIS?

I need to group 400 points in 10 groups with 40 points each. The goal is to get the 40 points geographicly together like this: Any idea how to do this with Qgis Pisa?
0
votes
1answer
472 views

How do i integrate Clustering into my Google Map?

How do i integrate clustering for my google map? I have found a few codes but i'm not sure how to combine both so that it won't mess up the whole site. This is my current code: <script type="text/...
4
votes
3answers
1k views

clustering points in postgresql to create contour map

UPDATE: To try to make this a little more simple, is it possible to create a query which selects a group of points such that each point in the group is at most X units away from at least one other ...
0
votes
3answers
464 views

ArcGIS server 10.3 fails to add machines to the cluster “Unable to access the config store”

Trying to Apply cluster scenario for ArcGIS Server on a test environment, 2 servers Node-02 and Node-03 these 2 servers are connected to a domain controller and have administrative users on the domain....
0
votes
0answers
26 views

Center PopupTemplate when using ClusterLayer

I am trying to use the below code in my application https://developers.arcgis.com/javascript/jssamples/layers_point_clustering.html. The only change I am doing is changed the height from 100% to 400px ...
4
votes
2answers
289 views

Big data sets and challenges using the Leaflet client

I am using Leaflet to present around 90.000 data points. My test code is generated using the plugin QGIS2leaf in QGIS 10.10.1. I am using clustering and reviewing the code I can see that this is "...
2
votes
1answer
521 views

Clustering Point for StatePlane WKID 2236

Does anyone have an example to point me in the right direction to utilize Clustering with the ESRI JS API working with a State Plane wkid: 2236? I want to provide a solution for an internal ...