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

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2
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1answer
32 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
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0answers
24 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. ...
5
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0answers
49 views

Mapping methodology and/or clustering technique needed

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 ...
5
votes
2answers
75 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 ...
2
votes
0answers
25 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
2answers
53 views

How to display geotagged photos in leaflet

There is awsome plugin of displaying geotagged photos in leaflet Photos on leaflet I used the picasa photos implimentation when I implemented the plugin for my picasa public album photos link in ...
1
vote
1answer
36 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. ...
1
vote
1answer
50 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
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1answer
35 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
16 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 ...
0
votes
1answer
17 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?
2
votes
1answer
47 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 ...
2
votes
0answers
53 views

Algorithm for spatial clustering?

I have a series of 2D maps with values ranging 0.0 to 1.0 spread all over. The algorithm that produces them is an application of the fractional Brownian motion. Each map measures 101x101 pixels or ...
3
votes
1answer
106 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 ...
1
vote
0answers
17 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
45 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
61 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
175 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 ...
0
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0answers
37 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 ...
1
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0answers
34 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. ...
1
vote
1answer
39 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 ...
1
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0answers
41 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
19 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
37 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
129 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 ...
3
votes
1answer
138 views

Cluster Markers with CartoDB

Is there an easy generic way to cluster Markers with CartoDB?
5
votes
1answer
107 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
1answer
27 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 ...
6
votes
1answer
93 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 ...
0
votes
0answers
44 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
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0answers
17 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: ...
1
vote
0answers
22 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
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0answers
16 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
0answers
84 views

PostGIS Clustering. Group by geographic point location proximity

I have a table where i keep user's location history. The system gets user's current location each minute and writes it into "user_locations" table. Later on; when showing the locations that the user ...
0
votes
1answer
75 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: ...
2
votes
1answer
175 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
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0answers
21 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 ...
0
votes
3answers
216 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 ...
4
votes
2answers
155 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 ...
1
vote
0answers
93 views

unsupervised classification in qgis (Orfeo toolbox)

I want to run an unsupervised classification of two landsat images in qgis. Therefor I want to compute a kMeans and a SOM (self organizing maps classification). Unfortunately it doesnt work. I tried ...
0
votes
0answers
31 views

grouping feature service layers in ArcGIS viewer for flex and applying clustering, is this possible?

I have some feature service layers I want to apply clustering to, and I also want to group them, or set them up as sublayers, for example I want to group the layers by category. I haven't been able to ...
1
vote
0answers
100 views

GeoSever PointStacker Renders incorrect position

I've been trying the GeoServer Rendering Transformations - Point Stacker. According to this docs there's an optional cellSize parameter for setting the "Size of the cells in which to aggregate points, ...
4
votes
2answers
163 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 ...
0
votes
1answer
747 views

Leaflet markerClusterGroup 'undefined is not a function'

I have to create a map with more than 5000 points from a geojson. So I would like to use markercluster plugin with Leaflet. I wrote the following code with help from the documentation and from other ...
1
vote
1answer
77 views

Leaflet marker cluster from JSONP WFS + Popups

I'm fairly new to Leaflet and just managed to use Leaflet marker-cluster with a JSONP WFS which provides my data from Geoserver. Now I would like to have a popup for my markers by mouse click. But I ...
0
votes
1answer
204 views

Openlayers 3 Cluster Strategy not projecting properly

As the title suggests, my Openlayers map is not displaying clustered points properly and I'm not sure why. My code is pretty simple and straight forward, here it is: JSfiddle: http:// ...
0
votes
1answer
249 views

Updating cluster distance in OpenLayers 3?

I have a vector layer with clustering in OL3.4: cluster = new ol.layer.Vector({ source: new ol.source.Cluster({ distance: 20, source: some_geojson }), ...
1
vote
1answer
50 views

How to create a Planer Point Pattern in R using a Shapefile of point features

I have just started to learn spatial analysis of point pattern with R. On page 20 of this book, the "Swedishpines" dataset has been used for inspection purposes. However, I want to use my own dataset ...
1
vote
0answers
80 views

Algorithm for clustering points into pairs (exactly two) by proximity without re-use

I have a reasonably large list of centroids that I want to cluster into groups of two by proximity (minimizing proximity). I've explored k-means, which does cluster them by proximity, but the count ...
0
votes
0answers
51 views

Analyzing homogeneity of raster values within polygons

I've been working with raster data of NDVI for agriculture plots. I'm testing the use of descriptive statistics (e.g. range and standard deviation) to observe any variations between plots (I think ...