Questions tagged [proximity]

Use for questions about vector features and their proximity or nearness to other features.

69 questions with no upvoted or accepted answers
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341 views

Using Proximity tool in QGIS 2.16

I am using the proximity algorithm to generate a raster proximity map indicating the distance from the coast (points shapefile) of my study area and the center of each planning units (I have divided ...
3
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1answer
163 views

Calculating distance while adjusting for obstacles in ArcGIS Desktop?

I have a global grid of points in the ocean and need to calculate the distance to and identify the closest 10 polygons along the coastline for the entire world while also avoiding crossing land. For ...
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0answers
39 views

What is the best way to calculate the accuracy of GPS point measurements in relation to the road network?

I have a vector dataset containing GPS locations/points of different vehicles and a (polygon) road network dataset. Due to the inaccuracy of the GPS receiver, these gps points can deviate up to 10-20 ...
2
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0answers
167 views

Nearest neighbour analysis from existing Excel sheet

I learnt the Nearest Neighbor Analysis from QGIS Tutorials and Tips. The result of this analysis, see image below I know that after running the distance to nearest hub analysis, it produces hub lines ...
2
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0answers
83 views

Using gdal_proximity in QGIS modeler?

I'm trying to use gdal_proximity to create a distance raster. When I try to run it independently, it works fine. However, when I try to use it within modeler, it encounters an error. I've attached two ...
2
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1answer
425 views

How do v.distance 'upload' parameters actually work?

I'm trying to use v.distance (using QGIS 3.4) to calculate the distance in meters between a layer of water shutoff points and the boundary of the nearest building footprint polygon. Even better would ...
2
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0answers
50 views

Calculating individual width between buildings using ArcMap?

I have a building footprint shapefile and I would like to calculate the individual width between each building (i.e., adjacent building and across the street). I have looked at solutions which use the ...
2
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0answers
156 views

WFS nearest feature by CQL Filter

At the moment I have a WFS with the following cql_filter: 'cql_filter: 'dwithin(bag:geometrie, point(lon lat), 100, meters)' The problem is that this filter does not sort the features from closest ...
2
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0answers
45 views

Compare 2 layers for like point features

I am looking for a plugin for QGIS that can compare 2 layers and tell me which point features are not common to both and which features are separated by a distance of say plus 1 foot. I am working ...
2
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0answers
215 views

Finding the closest points to a line with only one point from each subset of points

I have a set of data points that represent many paths for different journeys, where each journey has its own identifier (Operation No). The data for all journeys is in a single table but in effect has ...
2
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1answer
104 views

Selecting nearby polygons in QGIS?

I am working with QGIS and I have two different polygons, one with municipalities and another with conservation units (from Brazil). I need find out which Conservation units falls within 50 km from ...
2
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0answers
278 views

Calculate Great Circle Distance between two point layers via way point

I need to create three distance matrices for around 550 points spread throughout Africa, Europe and Asia. The first matrix represents great circle distances, the second is the shortest distance along ...
2
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0answers
105 views

PostGIS Nearest Neighbor query performance - can it be quicker?

I want to canvas the community to see if my nearest neighbor query can be optimized at all. I am happy with my current results, but I'm always up for improving. I have 2 tables, lakes and towns. I ...
2
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0answers
1k views

Assigning values to polygon layer based on nearest point in point layer using ArcGIS for Desktop?

I have a point file depicting groundstations for rainfall measurment. I also have a polygon file representing districts of a state. I want to assign rainfall values in a particular district based on ...
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0answers
26 views

Calculating distance to nearest coastline with ArcMap

I am using ArcMap to calculate the distance from a list of coordinates to the nearest coastline. I downloaded the shapefile of coastlines from https://www.ngdc.noaa.gov/mgg/shorelines/ and converted ...
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0answers
24 views

Locating points based on location and attribute difference using ArcMap

I am not sure if this is feasible or not but here is what I am looking to do: I have a point feature class where a certain set of the points all fall within 10-15 feet of another point. Ideally, ...
1
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0answers
19 views

Distance from points to points in the same polygon

I have 2 point layers and 1 polygon layer. I want to find distance nearest between this 2 point layer, but they must be in the same polygons. I used distance nearest hub, NNJoin, MMQgis but they just ...
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0answers
32 views

Distance nearest hub with conditions

I have 3 shapefile: pipes (line), junctions (point), customers (point). I want to bring customer demand value from customer to junctions with conditions: First condition: Nearest road Second ...
1
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1answer
44 views

Finding average distance to nearest point

I would like to find out the average distance from high schools (represented as a point in QGIS) to libraries (represented as another point in QGIS) in New York's 32 districts. I have already ...
1
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0answers
38 views

Nearest statement - Mapbasic

When I use the nearest statement in mapbasic, not all the "from table" points show up. For example I am looking for the nearest distance neighbor of every point in a table (called Points). I use this ...
1
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0answers
20 views

PostGIS - find vertices on polygons without partners

My goal is to ensure that a set of boundaries have vertices that are co-incident where they intersect by a tolerance of 5m. So I am looking for orphan vertices that are not on an external boundary. I ...
1
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0answers
28 views

How to create a raster map in QGIS that includes the distance to the nearest road multiplied by another variable included in a vector file?

I am using QGIS (v. 3.4). I have a vector file (.shp) with the main roads of my city including the average traffic load of each segment. I would like to create a map with the inverse distance to the ...
1
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2answers
95 views

Units raster proximity

I aim to calculate the average district-specific proximity to river in India by using the proximity (raster distance) function and the following data here and the GADM India data (level 2 for ...
1
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0answers
25 views

Find distance between points and borders

I'd like to ask for your help for the following problem. I would like to find the distance for each points from the nearest border, represented by the polyline feature here. I was thinking about ...
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0answers
19 views

Dissolve on attribute field and location?

I've got a county parcel shapefile and I'm wanting to find all the properties over 300 acres. When I dissolve based on ownership and search for dissolved properties that sum over 300 acres, some of ...
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0answers
33 views

Creating Near Table between points in one layer that share an attribute with points in another layer?

I am trying to calculate the distance between some geographic features (point layer) and the capital of the country that they fall in. I have a shapefile of "features" and a shapefile of "world ...
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0answers
18 views

Adding input files of near tool using %name% or %value% function?

I am trying to caluclate the nearest distance between road and road_buf shp. But I'm struggling to add input features using %name% function in NEAR TOOL. I want to add road_buf file as "c:Desktop\...
1
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1answer
387 views

Performing kNN between two 3D sets of points (pointclouds)

I have two overlapping pointclouds, for this example I take the first 10, A[0:10] and B[0:10]. They are stored as tuples, [(x, y, z),...]. I want to compare the two based on their nearest x,y,z ...
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0answers
42 views

Combining proximity criteria within Location Allocation?

I am using ArcGIS 10.5. I will explain the situation first: There are 134 139 forest centroids that serve as 'Demand point' to source Bioenergy conversion plants in the state of Queensland Australia....
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0answers
781 views

Calculating Distance and Bearing North Azimuth (0 degrees pointing North) in ArcGIS Near tool?

I am trying to calculate distance and bearing in ArcMap using the tool Near, and although it works I need the results to be calculated using North Azimuth (0 degrees pointing North) and not Polar ...
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0answers
41 views

ArcGIS Near equivalent in MySQL?

I am trying to replicate a process in MySQL that I have had been through in ArcGIS thereby using MySQL to set up an automated system for extracting future climate predictions from downscaled data to ...
1
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0answers
44 views

Measuring feature within a feature to the nearest feature

Is there a way in near tool to measure shortest distance of the input feature which is a point that is within the boundary of an island polygon to the nearest near feature which is also another ...
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0answers
40 views

Generate near tables from one layer to all in mxd

I am looking to create a script where user can choose a layer, then find all the layers within a set distance of it. I have set up a script to iterate through the mxd but I keep getting an error for ...
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0answers
86 views

QGIS-bin.exe stops working when trying to run NN-Join

I am trying to calculate nearest neighbor using the NN-Join add-in. This has worked well until now, but after I updated my data it only partly works. I have a point layer, and I have three other ...
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0answers
48 views

Calculating distance in polygons using ArcGIS Desktop?

I want to show on map what's the distance between polygon A and B, but the result should be specified in polygons. Here's the result similar to my idea: I am working on ArcGIS Desktop. Which ...
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0answers
510 views

Find nearest polygon to point using Python, OGR and Rtree

I have a dataset with points and one with polygons. When the points intersect with one or more polygons they get assigned an attribute value inhereted from the polygon, but not all points intersect ...
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0answers
466 views

Proximity analysis of posted speed limit

I want to perform a proximity search around my current position (moving vehicle) to find the links on the roads that have unique posted speed limits associated. I am imagining a big circular region ...
1
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0answers
30 views

Assign polygon to the nearby points in ArcMap

I'm a new user to ArcGIS and I'm trying to match a polygon to a point that's nearby. To be more specific, the blue area are the census tracts that get polluted. The green spots are the factories, the ...
1
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0answers
31 views

Using Near function on multiple variables at same time?

I am trying to calculate between variables and a Fishnet using the Near Analysis Tool. I have about 50 variables (Binary (Is there "a" information at this location)) for each XY points (300000) and I ...
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0answers
228 views

Calculating euclidean distances of forest areas to road infrastructure in ArcGIS for Desktop?

I have prepared a forest cover map at 100 m resolution and have also created a euclidean distance layer of road infrastructure for that area at 100 m resolution. I would like to know how I can ...
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0answers
761 views

NNJoin returns incorrect distances

Bottom Line Issue: The distances I get from NNJoin for the shortest distance from a point to the nearest polygon are several hundreds or even thousands of meters shorter than the distance I calculate ...
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0answers
26 views

Generate Near Table causes ArcMap shutdown

When I try to find the distances from xy coordinates to linear landforms such as roads and rivers, using Generate Near Table, it keeps shutting arcmap down and sending error reports, without telling ...
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0answers
244 views

Getting distance between two point layers based on a common field

I have two point layers, related to each other by a common ID, but with very different locations. I'd like to join them based on the ID field, but I'd also like to have the distance between them as ...
1
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0answers
319 views

Finding nearest points to POI with big data at Yelp?

Businesses often need to find nearest points to Points of Interest (POI). For example, use Yelp to find restaurants within 10 mile distance. As a normal GIS practice, we solve this problem by using ...
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0answers
374 views

Removing points outside of standard distance circle in ArcGIS for Desktop?

I have a feature class of companies where each may have multiple locations (for example, company A may have a cluster of points associated with it). For each company, I used the Standard Distance tool ...
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0answers
46 views

max sum within a 200mt radius

I have a SpatialPointData Frame in R. Each point represents lat long and InsuredValue amount. I would like to find the maximum sum of insured value in a radius of 200 mt. How I can do in R
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0answers
243 views

Identify adjacent and no-adjacent polygons between multiple shapefiles using R?

My spatial data are recorded multiple years, providing one polygon for a year. (Polygon is derived from raster data, so I can use rasters instead if it will be easier to run my calculations). I ...
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0answers
94 views

Strava Activity / Route Grouping

I'm an avid cyclist and want to reverse-engineer how Strava groups bike riders together. Here is their method to determine if cyclists are riding together (they use time and lat/lon of a ride): http:...
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0answers
238 views

Nearest neighbour / spatial join with attribute condition

I have 2 point format datasets I wish to schematically join (manholes & gullies). I am content that I can join them by nearest proximity alone using e.g. NNJoin plugin. What I would like to do ...
0
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1answer
34 views

Get distance from point to 10 nearest points in ArcGIS

I've a layer with the location of different sampled ponds and a layer with all the ponds in the region. I want to calculate the mean distance to the 10 nearest ponds in the region for each of the ...