Questions tagged [regionalization]

To divide a large set of spatial objects into a number of spatially contiguous regions while optimizing an objective function, which is normally a homogeneity (or heterogeneity) measure of the derived regions.

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35 views

Number converted to dictionary in Earth Engine

When reducing an image to number on it's geographical coordinates, the code does return a number, which is what should happen. var accum = ETo.reduce(ee.Reducer.sum()); var accumNum = accum....
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1answer
319 views

Getting rural/urban classification from Zip Codes

I have a dataset containing GPS coordinates and zip codes of locations from different regions in Spain, and I need to classify them as rural or urban based on either of these two information sets (and ...
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1answer
3k views

Getting full list of cities and regions from OSM

I need to match cities/postal codes from a large dataset with their regions (NUTS3 if available, otherwise administrative divisions as can be found here https://en.wikipedia.org/wiki/...
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0answers
37 views

Regionalization with variable weights

I am looking for regionalization software, that is, I want to cluster regions based on multivariate attribute data with the added constraint of spatial contiguity. I have found various software for ...
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0answers
401 views

Spatial clustering with attribute

I need to do some sort of spatial clustering where each spatial coordinate has a value attribute. So, for example, each point has a salary attached to it. So each cluster would have a total salary if ...
3
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1answer
473 views

ENVI 5.0 Applying one ROI on various images

I'm comparing different classification methods (parallelepiped & max likehood) with ENVI 5.0 Classic. I'm supposed to use the same ROI from one image on various images and validate the ...
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0answers
75 views

Clustering population data respecting given regional divisions?

I am familiar with clustering algorithms from machine learning and signal processing, for example for training vector quantisers. Recently, I have come across a problem in the GIS area that I am ...
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0answers
153 views

Fill holes with an area bigger of a specific value in a raster coverage

I want to fill some areas of a raster coverage with a value of my choice. Those areas now contain NODATA values. So, they look like holes in my coverage. I know I could use r.clump function of GRASS, ...
1
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1answer
128 views

Redcap Shapefile Error

For some reason I am unable to import shape files in the form of point data to REDCAP. Do these data points need projected coordinate systems? I am aware that the sample size is 500 when double ...
5
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1answer
164 views

Difference between regionalization and image segmentation

Regionalization is a special form of clustering where spatial units are grouped together, based on a set of defined criteria (cluster homogeneity) and a set of contiguity or adjacency constraints. ...
10
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2answers
774 views

Aggregating Polygons To Meet Privacy Requirements

I have a point feature class representing office locations of all employers in a certain industry. The feature class has an attribute for storing the number of employees working at each office. ...
2
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1answer
259 views

How to convert lat long into world region?

I have a list of lat/lon points in a kml file which I would like to group into world regions. How can I use the World Borders Dataset or some other dataset to generate a "region" tag for each point?
24
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1answer
3k views

Seeking tools for regionalization/redistricting?

I am looking for tools for regionalization / districting in GIS. So far I have been able to identify Districting ArcGIS extension (now also online) REDCAP (currently limited to 50k input polygons) ...