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

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1answer
14 views

Proximity filter

this is gonna be tricky to explain I fear. So 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, ...
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1answer
45 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 ...
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1answer
27 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 ...
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1answer
28 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 ...
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0answers
35 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): ...
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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 ...
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2answers
37 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 ...
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3answers
63 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 | ...
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1answer
33 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 ...
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1answer
33 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 ...
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1answer
32 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 ...
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2answers
28 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 ...
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1answer
30 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 ...
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1answer
32 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
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1answer
92 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 ...
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1answer
29 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
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1answer
99 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 ...
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0answers
36 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 ...
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1answer
27 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
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1answer
79 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 ...
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1answer
56 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
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2answers
61 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
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2answers
73 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 ...
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2answers
104 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 ...
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2answers
33 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
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2answers
95 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 ...
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1answer
34 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
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1answer
29 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 ...
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1answer
59 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 ...
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0answers
13 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 ...
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0answers
27 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
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2answers
78 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
56 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
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2answers
94 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" ...
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1answer
74 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
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2answers
82 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 ...
0
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0answers
142 views

What QGIS tool or plugin is equivalent to the ESRI “Near” tool?

Using QGIS 2.10.1 I need to determine the distance from each feature in layer A to its nearest feature in layer(s) B or C or... ESRI has this capability with their "Near" tool: ...
2
votes
2answers
51 views

Deleting some observations in near table?

I created some near tables, with a max near distance of 8000m. It is extremely timely exporting these files to csv right now. Is there a quick way in ArcGIS to delete observations that have a ...
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2answers
68 views

Finding points within distance of polygon using ArcGIS for Desktop? [closed]

I have several polygons(areas) and points(with names of places) on two different layers. How would I go about finding all of the points that reside within 100m of the polygons I have on the other ...
5
votes
1answer
154 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 ...
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0answers
23 views

How to use 3d analyst tool box?

Can you tell me how to check and select horizontal and vertical distance within criteria in 3D analyst tool. I tried near 3D tool but I cannot get clear information. Ex: horizontal dist 3m ...
1
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1answer
64 views

Calculating Closest Distance Between All Combinations of Set of Polygons using ArcGIS for Desktop?

I'm looking to calculate all combinations of the closest distance 2 polygons in a set of polygons in ArcMap 10.2.2. I have an advanced license. I'm assuming it has something to do with the Proximity ...
0
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0answers
27 views

Calculate near distances using drive time distances

I know that you can calculate the drive time distance between two points on ArcGIS. But, is it possible to combine the generate near table tool with drive time distances? I have an input feature, a ...
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2answers
84 views

Computing the Vertical Nearest/Shortest Distance in ArcGIS

I have a shapefile containing around a hundred points (lat/longs). And, I have a shapefile that contains a polyline representing a river. The river is somewhat horizontal (runs east to west) but ...
0
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2answers
39 views

Calculate how many points a route goes through

Is there a way in which a route mapping interface can determine how many points a certain (user created) route has 'touched'? In the sense that firstly: I have a set of markers or points (e.g. ...
1
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0answers
19 views

Expression geomnearest not found

I have been making some new printer composers in a project I am working on in QGIS. I had implemented the use of expressions to create content for the title block, one of these is the geomnearest ...
2
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1answer
50 views

How to reduce points by proximity

I got a layer with over 4 million points. The distance between the points are 1 meter. How can i reduce the data so that no points have less than e.g. 10 meters between them?
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0answers
31 views

explain generate spatial weight matrix k-nearest nieghbor results

I successfully generate 8th nearest nieghbor matrix and open it in excel, but I am confused about what the weight field mean it shown in the picture below since I generate the 8th nearest neighbor I ...
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2answers
79 views

Selecting nearest 300 buildings (polygons/centroids) from list of points using ArcGIS for Desktop?

I have been trying to look for an easy/quick way to select a certain amount of polygons (layer 1) from a 90 points shapefile (layer 2). The idea is to identify the nearest 300 buildings from each of ...
1
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1answer
305 views

driving time to the nearest facility using pgrouting

I'm using pgrouting 2.0 and postgis in postgresql. My problem is to calculate the driving time to the closest facility for each node of my OSM derived network. These are the steps to be implemented ...