We’re rewarding the question askers & reputations are being recalculated! Read more.

# Questions tagged [distance]

The measure of separation between two entities or locations that may or may not be connected, such as two points.

1,155 questions
Filter by
Sorted by
Tagged with
9 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 ...
27 views

### Point to every other point as dataframe in R

I understand there are several tools out there that can help me accomplish my goal, but I think I'm running into more of a conceptual roadblock. I've tried to implement a fully reproducible example in ...
49 views

### Find 3 closest points in relation to another point

Using QGIS, I have two shapefiles: points representing enterprises (about 50k) points representing towers (about 300) For each enterprise, I need to figure out the three closest towers and their ...
66 views

### Criterion for measuring the distance between a group of points to origin?

I wonder if is there any criteria to represent the distance of a group of points (in 2D space) to origin? A simple criteria is the mean of distance of each point. But as can be seen in the picture, ...
1k views

### Shortest path from points in one layer to points in another layer via roads in QGIS

I'm looking for a way to calculate the shortest path from addresses to subway stations via a network of roads. I have the Road Graph plugin, however, the addresses and subway stations are point ...
83 views

### Cleaning GPS tracks from large jump / outliers

Can someone please explain the steps to take in order to eliminate the parts of these linestrings which jump across large distances (not along with the road network)? They were created from GPS ...
6k views

### How to use GeoSeries.distance to get the right answer

When I want the distance between two points [(117.454361,38.8459879),(117.459880 ,38.846255)] (longitude,latitude) on the earth, I take the GeoSeries.distance method, but the method does not give me ...
174 views

### Deleting “lonely” points in QGIS?

I have a large point dataset of about 5.3 million points. I would like to delete the "lonely" points using QGIS, for example all points with no neighbor within a 5 km radius. The extent of my point ...
498 views

### What does st_hausdorffdistance actually compare?

Does st_hausdorffdistance just look at discreet points used to construct a line segment or does it compare two line segments as a continuous set of points? Also, the points used to construct my line ...
36 views

### Deleting points based on number of neighbours using ArcGIS?

I have one point dataset of around 270,000 points. I have another larger point dataset of about 3.5 million points. I would like to make a 5 km radius around each 270,000 points of the first dataset....
40 views

### Calculating the geographical distance between two points (especially Gnomonic)

I tried to get geographical distance between two points by using spherical trigonometry, Mercator and Gnomonic projection. The detail of 2 points point A ( 15º 55’ S, 5º 44’ W) , B( 32º 19’ N, 64º ...
65 views

### Calculating distance (lat, lon) for geom point using PostGIS

I have point in my db (Postgres postgis): CREATE TABLE geometries (name varchar, geom geometry); With example data: INSERT INTO geometries VALUES ('Point', 'POINT(0 0)'); INSERT INTO geometries ...
51 views

### Distance between points

I have 200 locations of species presence. Now, I want to calculate the distance of nearest point for all 200 points. For example, if there is a cluster of points A,B,C,D,E,F,G,H, then what is the ...
66 views

### Creating Variable Distance Buffers using QGIS

I would like to create variable distance buffers for some points in QGIS 3.4. I have seen in previous posts that there used to be a tool for this in older versions of QGIS, but that this tool wasn't ...
33 views

### Draw several lines to represent the distance to a certain point for several points

It gives a certain point that I want to analyze. I want to see what is the distance of that point from the rest of the x points on the OpenLayers map ... The data comes from external JSON in the ...
61 views

### Calculating destination point using Python

I am trying to write a function that calculates the GPS (decimal) coordinates of a point that is far of a given distance from a given point. Let say that we start from point 1 (The stripe of Dublin) ...
50 views

### Distance between points along line

How do I determine the distance between points to the neighbor point that connected via the line(road)? In QGIS 3.8.3 I have tried v.distance and v.net.distance but they do not help. The line(roads) ...
50 views

### PostgreSQL - attach to point table the maxium distance value to edge of containing polygon

I'm trying to find the furthest distance from a point to the edge of the polygon it sits in. The polygons in this case have been converted to vertex points. I have two POINT tables in Postgres (and a ...
15 views

### When I run the Join function on two vector layers the distance field keeps returning “-1”

When joining two point layers by geographic location with the "Each point will be given attribute" selection, I keep getting a NEARDIST of -1.
56 views

### Using Geometry.distance_to() in ArcGIS API for Python

I'm calculating distances between points in arcpy or ArcGIS API for Python, and am probably doing something wrong. Hopefully, someone can show me what. Take this as an interactive session with ...
375k views

### Calculating longitude length in miles

Suppose I have geographic coordinates of "Saratoga, California, USA" as Latitude: 37°15.8298′ N Longitude: 122° 1.3806′ W I know from here that in case of latitude 1° ≈ 69 miles and that ...
193 views

### Calculating minimum distance in meters of two polygons (defined in lat/long coordinates)?

I'm new to GIS and I'm a bit lost in the terms and concepts, so I'm not sure I'm asking a valid question, but I need to calculate the minimum distance (in meters) of two polygons which are defined in ...
44 views

### Distance between centriod of the polygon and each and every point of the polygon [closed]

I'm trying to calculate the distance between centriod of the polygon and each and every point of the polygon using GeoPandas Python I need to find the distance between centroid(18.9568383649 72....
14k views

### Which tools and methods can be used to create isochrones?

I'd like to get an idea for what's involved in creating isochrones for a series of sites, with a reasonable degree of accuracy to the estimates. A general outline would be great, though my scenario ...
65 views

### Distance between points inside LineString

I have a collection of geometries represented by a linestring. Each has at least two coordinates. Is it possible to write a SQL that instead of returning coordinates, return a distance between them. ...
35 views

### Moving points by multiple attributes automatically

I have a shapefile including sightings of birds (points), but the gps points are taken from where the sighting have been made, not where the bird actually are. And in the map I need to show the real ...
48 views

### Calculating distance between point (address) and every road in city using QGIS

I'm new on QGIS, and I'm trying to measure the distance between an address and every road in the city. I used NNjoin but I got only the shortest distance between the address and the nearest road. ...
50 views

### Apply symbology based on an algorithm (ArcGIS)

Been battling this problem for a long time now, so hoping someone here can shed light on a possible solution. The problem is that I have 100 points and I want to apply a color palette to the points so ...
107 views

### Nearest Neighbor - return object ID in R

I have a csv file that contains the GPS coordinates of about 100 villages and their unique ID. I have an other csv file with the GPS coordinates of some potential destinations and their unique ID. I ...
43k views

### Performing Distance Calculation using Excel?

Is there a way (preferably in Excel) to calculate the distance (based on lat, lon) between two lists of points? My end goal would be, for example, to have a list of Starbucks and a list of McDonald'...
24k views

### Difference between Vincenty and great-circle distance calculations?

Python's geopy package features two distance measurements techniques: Great Circle and Vincenty's formulae. >>> from geopy.distance import great_circle >>> from geopy.distance ...
22 views

### Measure of isolation (better than distance to the closest)

I have square locations (see image). For my SDM, I need some measure of isolation of a square (related to the other squares or a particular specified set of squares). The most simple one would be to ...
102 views

### Creating points along line at ellipsoidal distance

I need to create points along a polyline in QGIS 3 at every 1000m of ellipsoidal distance and have tried several tools, as suggested in other answers: Points along geometry QChainage plugin Convert ...
104 views

### Drawing connecting lines between points to nearest within layer using ArcMap

I need to connect points within one layer to the nearest with polyline. Tool to the nearest would be ideal, but there is nothing in the attribute table. I tried to find tool in X Y coordinate, but ...
220 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 ...
105 views

### Find all regions (lat, long, radius) that contain a point

A Region has a latitude, longitude (GEOMETRY('POINT')) and a radius. Using postgis, how can I query all Regions where the distance from pointParam and region.point is less than or equal to region....
686 views

### Calculating distance between points crossing antimeridian using R? [closed]

How can I calculate the distance between two points (lon/lat) if any of the points exceeds the antimeridian (+-180 longitude)? I am using the distVincentyEllipsoid {geosphere} to calculate the ...
54 views

### Getting nearest point but with a filter conditional in QGIS 3.4?

I have two point layers in CSV files, each with about 500 points/rows. Each point in both layers has a year column (attribute). I know how to use Distance Matrix to find the nearest point. BUT: For ...
509 views

### commuteDistance in gdistance package in R giving error

I am currently trying to run a function that "calculates the expected random-walk commute time between nodes in a graph. It is defined as the effective distance (resistance distance) between the ...
31 views

### Finding neighbors of latitude longitude pair location

I have a list of points (more than a few million) defined by latitude and longitude. I want to find out the neighbors of each point. For example, I want to know for each point, what the nearest point, ...
57 views

### Creating Voronoi diagrams using JTS and the manhattan or minkowski distance metrics

In Java I am using the JTS library. Is it possible to use this library to generate Voronoi sites using different types of distance functions? https://locationtech.github.io/jts/javadoc/org/...
43 views

### Calculating line length to both sites in QGIS

Is there a function or a plugin for QGIS that works like this? I have a line, for example, 7 km I click on that line at any point A popup or something gives me the distance to the left an to the ...
92 views

### Calculate Geometry function returns underestimated distances

I'm making a map of the Colorado Trail and obtained a set of waypoints taken down the entire trail. I projected the set of waypoints from WGS84 (unprojected) to NAD 83 UTM13N after adding to the data ...
28 views

### Distance from point to line with positive and negative values (near tool?)

I am trying to calculate the distance between collected points and a generated shoreline, but I also need to know if the points are inside the shoreline or outside the shoreline. I have been using the ...
23 views

### Recognized, calibrated test points for a rangefinding function?

I'm trying to find out if there are scientifically accepted calibration points to measure the effectiveness of a geodetic distance finding function. So far I've been using the listed latitude / ...
126 views

### Distance between two points - by ID in QGIS

I have a dataset of 350 or so individuals. Each individual has a start point (2 columns with Lat and Long) and end point (2 columns with Lat and Long). I would like calculate the distance between ...
2k views

### Performing Point Distance analysis using Basic level license of ArcGIS for Desktop?

I am using ArcView Version 10.1 and I need to perform a point distance analysis like: What is the distance from A to B-Z, B to A-Z, C to A-Z, etc? What are the steps that I take to do this?
4k views

### Spatial distance analysis in QGIS

I'm quite new to QGIS and trying to figure out how to analyze the following problem. I have three layers: settlements point layer with 253 entries waste treatment facilities point layer with 24 ...