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

learn more… | top users | synonyms (1)

2
votes
1answer
31 views

How to find near polygons

I have some polygons with attributes (in my case, some polygons have health establishments) and others without attributes (without health establishments). Is there a function that I can use in order ...
0
votes
1answer
31 views

How to calculate nearest point to a linestring in PostGIS?

I'm following this question to calculate POI nearest a road(linestring). I'm able to calculate nearest points in the linestring but I'm not able to find the distance from the POI to nearest point(...
3
votes
2answers
70 views

ArcGIS: table statistics range, method?

I have the following table with distance values (NEAR_DIST) after using the "Near" tool in ArcGIS: I am looking for a method of getting the following statistical information/statement, for example: ...
0
votes
0answers
18 views

Auto fill fishnet labels attribute table?

We are working on creating a DEM on a certain area and we created a fishnet on a certain area with the labels ( dots ) now we have to fill the attribute table of these labels by the nearist contour ...
0
votes
0answers
19 views

Generate Near Table equivalent using a cost surface

I'm using ArcGIS 10.3 to calculate the distance from every point in a feature layer (scientific study sites) to the nearest 2 points in a different feature layer (sites infected with a waterborne ...
1
vote
1answer
72 views

Select points based on value and proximity

I have a set of points in a table, each has a value between 1 and 100. How could I reduce this to the point with the highest value within a radius distance X. So that no point is ever closer than X ...
1
vote
0answers
38 views

For every point type A, distance to nearest polygon of type A?

I should calculate the short distance between points and polygons of the same type. I have more than 2000 points of 60 different types. And shapefile with 60 polygons of the different species. The ...
1
vote
0answers
13 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
1
vote
0answers
27 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 ...
1
vote
2answers
54 views

Average Nearest Neighbor for X points instead of 1 point

Is there a tool similar to the Average Nearest Neighbor tool where instead of calculating the average for the closest point it calculates the average for the closest X points?
2
votes
1answer
41 views

Nearest neighbors

I have a point shapefile overlayed over a grid-based polygon shapefile. I would like to select the nearest neighbor grid cells of a given grid cell that contains any of the given point(s). So let's ...
1
vote
1answer
39 views

Calculate distance in km from point to polygon (given in lat/long) using ArcGIS?

I have two datasets, one of polygons and the other of points, both spread across the United States. Both have decimal degree coordinates in WGS 1984. I want to determine the distance from each polygon ...
0
votes
0answers
20 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 ...
1
vote
0answers
23 views

Creating a new field based on another field and proximity to another shapefile? [closed]

I have a shapefile (sf1) with speed and another shapefile (sf2) with road locations. I'm trying to create a new field in sf1 that denotes commuting, so a binary 0=not commuting;1=commuting. I created ...
1
vote
1answer
26 views

Proximity filter

The aim of what I'm currently messing around: Creating a distance buffer around points in a SpatialPointsDataFrame If the value a this point is > 0, always keep it If the value a this point is = 0 ...
2
votes
1answer
53 views

Why do “stripes” appear on raster?

I am reprojecting a SRTM 3 arc-second raster file from WGS84 geographic coordinate system, to projected coordinate system which is using Azimuthal Equidistant projection: gdalwarp -s_srs EPSG:4326 -...
1
vote
1answer
37 views

Snap or Move a Point to its closest attribute matching line ArcMap

I have a point feature I want to snap or move to its closes line feature. Now this is easily accomplished with the Near tool. However I want the Point with its unique name attribute only to move or ...
1
vote
1answer
35 views

How to determine the closest feature to my points?

I am doing a research on transportation for motorcycles. For each trips, I have the origin points and the final destination coordinate points. I also have another landuse layer with my points of ...
1
vote
0answers
40 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:...
0
votes
0answers
28 views

Near does not provide outputs

I have a layer of lines that build a network. I would like to find which one of these lines is the closest to a certain point, defined in another layer. I was trying to use the "Near" tool giving as ...
0
votes
2answers
40 views

Looking for the “inverse” of the NEAR tool

To calculate wind fetch over water I need to create a point on the shoreline and then calculate the distance to to other shorelines all directions (0 - 360 deg). The shortest distance to another land ...
1
vote
3answers
80 views

ArcGIS - Near By Group

I have two polyline layers with corresponding attributes. Each layer has 100,000+ rows. I need to calculate the distance between the corresponding features from each layer. E.g. Layer 1: FID | ...
3
votes
1answer
35 views

Is there an Equivalent to the Near tool for Network Analyst?

I want to do a process where for each street segment, the network distance from the nearest point in a set of point features is calculated. The result is that when you click on a street segment using ...
1
vote
1answer
43 views

Near analysis for nearest feature in a distinct angle

I want to calculate the nearest distance from a point feature to a line feature in a distinct angle. When using the Near analysis tool in ArcGIS I get the nearest distance in a angle where the ...
1
vote
1answer
36 views

Point Distances to many buffer zones

Here is my problem: I have 72 points, and each one of those points falls within multiple 1,000 foot buffers zones. I am trying to find out the distance from the point that falls within a buffer to ...
3
votes
2answers
33 views

Reduce frequency of vector points based on attribute or spacing

I have a point shapefile with 5000+ points. The points represent centroids of a flood model mesh output and I want to display the flow direction attribute in the form of an "arrow" point style. I ...
0
votes
1answer
47 views

Nearest Neighbour analysis between points in 2 tables utilizing with distances set along specific polyline roads

I'm trying to do a Nearest Neighbor analysis between points in 2 tables utilizing with distances set along specific polyline road files I have. I am attempting to determine the most cost effective way ...
1
vote
1answer
37 views

Get coordinates of Near Tool output

I have a polygon layer and a polyline layer. I got the centroids of the polygon layer and used the Near Tool to find the distance from the closest point from the centroids to the polyline layer. One ...
3
votes
1answer
123 views

Nearest distance between point layer and line layer, QGIS

I have two layers , line and point layer. I need to make line layer which connect all points to nearest line features? Is someone made a plugin for qgis? This is very important tool which missing in ...
1
vote
1answer
34 views

Keep “no data” tiles as “no data” w/ proximity (raster distance) operation

Working in QGIS 2.8.1 Wien. I have a raster file with three classes: "No data" for tiles outside of the country of interest's bounds "0" for tiles that correspond to roads "1" for all other tiles. ...
6
votes
1answer
132 views

How to group 10k points into closest pairs?

I was first faced with a problem of grouping 1000 pairs into unique pairs to minimise the total distance - since this was a small number I solved it using linear optimisation: Part 1 - Basic/Naive ...
0
votes
0answers
41 views

Using Near Feature Tool with Conditions

I am using near feature tool in ArcGIS 10.1. However, I need to add another condition to it (not only the nearest). The feature (point) that i am looking for, is the nearest (point) and also doesnot ...
1
vote
1answer
38 views

Reclassify a raster based on proximity to other cells in the same raster

Using Arc 10.2.2 with the Spatial Analyst extension, I have a single band, signed integer, 8-bit raster. I need to reclassify cells within that raster based on their Euclidean distance to other cells ...
3
votes
1answer
118 views

GeoSpatial queries and indexes in memory

I am currently using Spark/Scala to process some data, and I am at the point that I need to run ~3M of geospatial queries. One common solution would be using MongoDB or PostGIS (or Magellan for Spark ...
1
vote
1answer
72 views

Finding distance to closest road (polygon to line) in ArcGIS for Desktop?

For my project I need to find the distance to the nearest road from forest polygons. I'm trying to do a weighted overlay analysis (eventually) for a habitat selection project so I think I need to end ...
3
votes
2answers
65 views

Knowing if there is correlation between roads and observations in ArcMap?

I am using ArcMap 10.3.1. I am trying to find out whether some observations have been made randomly throughout a landscape, or they are biased towards the location of roads and paths. I have a ...
4
votes
2answers
101 views

Least Cost Path Distance to nearest polygon

I have multiple polygons (destinations) and an elevation raster. For each raster cell in my study area, I need to calculate the distance to the nearest destination polygon. If I use the 'as crow flies'...
7
votes
2answers
123 views

Creating a point on edge of closest polygon

My project is looking at a grid in the ocean. I want to capture each ocean point's distance to the nearest coastline as a weight, and then use buffer to capture the sum of nightlight data within a 1 ...
0
votes
2answers
37 views

Points proximity to polygons in ArcGIS for Desktop?

I have a point feature class with 1725 records (spread out over NYC) and a polygon feature class with 13 records (also spread out over NYC). What tools or processes can I use to figure out what ...
2
votes
2answers
123 views

Average value of polygons within a set distance from a point

I have two vector layers: one polygon and one point layer. The polygon layer has a value from 1 to 10. I am trying to find the average value for all polygons within or partly within a 1-mile radius of ...
0
votes
1answer
37 views

Snapping point to point nearest to it in ArcGIS for Desktop?

I am using ArcGIS 10.3 for Desktop. I have 2 point features centroid and station. I want to snap all the points of centroid to the nearest point in station such that centroid is only snapped with ...
0
votes
1answer
32 views

Using Generate Near Table and keep the ID attributes

I try to use near table between two datasets to calculate the nearest distance. The original data is as the right one, and the near table generated is as the left one. The problem is the attribute of "...
0
votes
1answer
64 views

Using Near (proximity) tool in ArcGIS for Desktop?

I've tried changing GCS and PCS multiple ways but can't seem to figure out how to get the Near (from Proximity tools) to output the Near_DIST in feet. All it outputs is what looks like decimal degrees....
0
votes
0answers
15 views

How to get feature ID correctly in Near table?

I have generated a near table using ArcToolbox, and there are 50 points in two datasets. The feature ID for input and near are quite bigger than normal, as the left one in the enclosed picture. I have ...
0
votes
0answers
28 views

Meaning of zero in fromxy/toxy of ArcGIS Near 3D tool?

I am using ArcGIS 10.2 for Desktop. I am running the near tool for points with different attributes. Many are in the same location, so I would expect the Near_DIST3 to be zero and the location of the ...
2
votes
2answers
94 views

How to find the closest segment to a point

I am trying to find the closest road segment to a point that I have and return an attribute from the closest segment to the given points. I know in PostGIS I need to use ST_ClosestPoint, ...
2
votes
1answer
64 views

How to calculate proportion of a line segment around a point?

I am looking at certain variables surrounding points that represent Sea otter raft sites. The coast line surrounding the points is broken into unit lines (Essentially a polyline with attributes for ...
2
votes
2answers
104 views

Nearest line feature from point using ArcGIS for Desktop?

In the image given below, solid lines are showing as road elements and points are showing as data collected for those road segments. I want to update road element id to the points shapefile. "Near" ...
1
vote
1answer
77 views

Calculating emissions from points in road network using ArcGIS for Desktop?

I have GPS data (X,Y, speed, CO2 and fuel consumption) for one truck for one trip. I want to import them in ArcGIS and to join them with the road network (map matching). I was thinking of applying "...
0
votes
2answers
96 views

Complete matrix from Generate Near Table

I am trying to make a matrix with all the distances from 4000 objects to 1000 other objects. I used the Generate Near Table and deselected "find closest option only". The output is table with 4 ...